From: "Paul Heelis" Subject: New chemistry jobs vacancy site To

Date: Wed, 7 Jun 2000 15:30:41 -0700

From: "Chapman, Robert D"

Subject: RE: ORGLIST: Ullmann Biaryl Ether Synthesis
http://www.rsc.org/is/journals/current/chemcomm/cc998019.htm

provides:

http://www.rsc.org/ej/CC/1998/D9805783.PDF

which has review citations therein.

Robert D. Chapman, Ph.D.

Chemistry & Materials Division (Code 4T4200D)

Naval Air Warfare Center

China Lake, CA 93555 USA

__________________
Date: Thu, 8 Jun 2000 09:12:41 +-4-30

From: "B.H.Yousefi"

Subject: ORGLIST: Free online-journal, data bank, .....?
Dear Orglist members,
Does anyone know of any free online-journal website address or data bank about organic chemistry?
Thanks,

BHY

__________________
Date: Thu, 08 Jun 2000 13:25:15 +0200

From: Jacob Zabicky

Subject: Re: ORGLIST: special filter paper
Hello Jatin,
If water solubility is low, place your stuff in centrifuge tubes, add

water, mix well with a glass stick, long spatula or whatever does it,

centrifuge for a few minutes, and separate the water layer. If the water is

lighter, just decant or if heavier use a Pasteur pipette, and repeat the

proceedings until you washed enough.
Good luck
Jacob
>dear fellow chemists,

>does anyone have experience in filtering of sticky organic compounds, which

>need to be water washed. the normal filter paper used is not effective and

>fibres from the paper come into the product.

>also can anyone tell me about an alternate catalyst for iron and acetic

>acid, used in the synthesis of paracetamol.

>Thanks a lot in advance,

>jatin

>
*******************************************************************

Temporary address:

Prof. Jacob Zabicky Tel.: [phone]

Group de Fisica dels Materials II Fax.: [phone]

Universitat Autonoma de Barcelona Private Tel.: [phone]

08193 Bellaterra (Barcelona)

Spain

*******************************************************************

__________________
Date: Thu, 08 Jun 2000 14:48:06 +0200

From: Jacob Zabicky

Subject: Re: ORGLIST: RE: Y2K
Dear Friends,
Thank you for pointing out that I send ridiculous dates.
I wish it were something interesting of the kind mentioned below.

Unfortunately not. It has to do with bugs of SYSTEM 9 of Macintosh. I

bought their last posch Powerbook model to take with me on a short

sabbatical, that seems to be almost OK. I say Almost! It probably could be

corrected a long time ago, but MACINTOSH' SERVICE STINKS! THEIR HOME PAGE

IS FULL OF ADVERTISEMENT BUT WHEN YOU LOOK FOR SUPPORT YOU GET NOTHING!

NOBODY TO ADDRESS, BE IT E-MAIL, THE WEB, SNAILMAIL. IT'S A PITTY THEY

DETERIORATED SO MUCH!

Hoping this gets to their closed ears/eyes,
Jacob
*******************************************************************

Temporary address:

Prof. Jacob Zabicky Tel.: [phone]

Group de Fisica dels Materials II Fax.: [phone]

Universitat Autonoma de Barcelona Private Tel.: [phone]

08193 Bellaterra (Barcelona)

Spain

*******************************************************************

__________________
Date: Thu, 08 Jun 2000 15:50:36 GMT

From: "Yuehui Zhou"

Subject: Re: ORGLIST: Free online-journal, data bank, .....?
I know one free site for Tetradedron letters. You have to be member of

chemweb.com. The membership is free.

>From: "B.H.Yousefi"

>To: Multiple recipients of list orglist

>Subject: ORGLIST: Free online-journal, data bank, .....?

>Date: Thu, 8 Jun 2000 09:12:41 +-4-30

>

>Dear Orglist members,

>

> Does anyone know of any free online-journal website address or data bank

>about organic chemistry?

>

> Thanks,

> BHY

__________________

Date: Thu, 08 Jun 2000 20:36:10 +0100

From: "nasr yhya"

Subject: Re: ORGLIST: Re: demand
Dear/prof

thank you for hellping me.but I search much about this review in my country and i dont find it this is one solution that you send to me this paper and say how many it cost?I will send money frist then you send to me this paper.my be this is diffcult but i know your kind.help me please. write to me to know your repllay.

thanks nasr yhya

--

__________________

Date: Thu, 8 Jun 2000 14:07:13 -0700 (PDT)

From: Sanjeev Kulkarni

Subject: ORGLIST: Help
Can anyone tell me the chemical formula of polyurethane?

__________________

Date: Fri, 9 Jun 2000 15:04:50 GMT

From: "Manuel Toennis"

Subject: ORGLIST: fluorinated solvents
Hi friends,
i'm deserately looking for some information (review-article or online)

about (per-)fluorinated solvents, their properties and commercial

sources.

Especially i'm looking for stuff that is mixable with water - i heard it

times ago that there is something that is mixable with water but

seperates at certain temperatures...

Sad but true i could not find anything useful neither with online-

search engines nor with litrature...

So i hope you can help me with that...
bye,

MT

__________________

Date: Mon, 12 Jun 2000 11:54:48 +0100

From: "A. Jorge Parola"

Subject: ORGLIST: stability constant
Dear all,
would anyone know references for stability constants between Mg2+ and ADP?
Thanks ion advance
Jorge

_________________________________________________

Dr. A. Jorge Parola

Departamento de Qu=EDmica

=46aculdade de Ci=EAncias e Tecnologia

Universidade Nova de Lisboa

2825-114 Monte de Caparica

PORTUGAL
Tel: + 351 21 2948300/2948500 (ext 10923)

=46AX: + 351 21 2948385

URL: http://www.dq.fct.unl.pt/sqfi/fotoquimica/

__________________
Date: Mon, 12 Jun 2000 09:02:33 -0700 (PDT)

From: antonio regla

Subject: ORGLIST: Re: Nitric Acid Enrichment
Dear List Members:
Does anyone know how to enrich 70% nitric acid to obtain fuming nitric acid? I need to use fuming nitric acid to do a nitration of furfural, but we don't have access to fuming nitric acid. My understanding is that transportation of fuming nitric acid is more dangerous and many companies do not sell it because of this. The nitration of furfural is done along with the acetylation of the corresponding acetal, thus protecting the carbonyl group of the aldehyde towards oxidation. I would appreciate if anyone can give me any information about the possibility of enriching regular nitric acid.
Sincerely,
Antonio Regla

__________________

Date: Mon, 12 Jun 2000 23:26:18 -0400 (EDT)

From: Bruce Allan Palfey

Subject: Re: ORGLIST: stability constant
Have a look at:

Pecoraro VL, Hermes JD, Cleland WW (1984) Biochemistry 23, 5262-5271

"Stability constants of Mg2+ and Cd2+ complexes of adenine nucleotides and

thionucleotides and rate constants for formation and dissociation of MgATP

and MgADP."

__________________

Date: Tue, 13 Jun 2000 11:03:25 +0200

From: "Yantao Chen"

Subject: ORGLIST: Mitsunobu Inversion
Hi,
I have done the Mitsunobu inversion reaction, but the elimination =

compounds are always obtained. I want to run it again at the lower =

temperature. Does any one have the related experience, any reference or =

suggestion? Thanks a lot.

Yantao Chen

[e-mail]

__________________
Date: Tue, 13 Jun 2000 11:06:01 +0200

From: "Schuit, ing. R.C."

Subject: RE: ORGLIST: Re: Nitric Acid Enrichment
Check out Vogel, 3rd ed. pg. 189.
__________________
Date: Tue, 13 Jun 2000 11:27:55 +0200

From: "Schuit, ing. R.C."

Subject: RE: ORGLIST: Re: Nitric Acid Enrichment
Buy the stuff: Fluka 100% HNO3 500 ml's $45,-
__________________
Date: Tue, 13 Jun 2000 11:07:48 -0700

From: "Chapman, Robert D"

Subject: RE: ORGLIST: stability constant
Mg^2+ + ADP^3- --> MgADP^1- Kb(MgADP) =3D [MgADP^1-]/[ADP^3-] [Mg^2+] =

=3D

1.11x10^3, Alberty (1992)

from

http://www.biologists.com/serve.cgi?JEB/198/08/jeb9913.pdf

Robert D. Chapman, Ph.D.

Chemistry & Materials Division (Code 4T4200D)

Naval Air Warfare Center

China Lake, CA 93555 USA
__________________
Date: Wed, 14 Jun 2000 14:31:20 +0700

From: "Ri Ren"

Subject: ORGLIST: Request for advice of handling QAC
Dear All,
Got serious problem with high foaming property of Alkyl Dimethyl Benzyl =

Ammonium Chloride.

Will highly appreciate for any suggestion how to control the foaming =

property.

Is there any non-silicone/non-mineral oil base defoaming agent can be =

applied to this QAC ?

Best regards,
Ri Ren
__________________
Date: Wed, 14 Jun 2000 10:14:30 +0200

From: Gianluca Sbardella

Subject: ORGLIST: 3-bromination of N-substituted pyrroles
Dear Colleagues,

first of all my apologies for any crossposting.

I recently planned to synthesize some 3-phenyl-N-substituted pyrroles

via Suzuki coupling of (substituted)benzene boronic acids with the

proper 3-bromo-pyrroles. Alas, the only method of 3-bromination of

pyrroles I found was an isomerization in a trifluoroacetic acid medium

of 2-bromo derivatives. Does anybody ever had any experence on this kind
of reaction?

Thank you very much in advance.

If the topic could be interesting for any other I will summarize to the

list.

Sincerely,
Dr. Gianluca Sbardella, Ph.D.

Diprtimento di Studi Farmaceutici

Universita' degli studi di Roma "La Sapienza"

Rome - Italy

__________________
Date: Wed, 14 Jun 2000 10:43:31 +0200

From: "Bohlen, Jost T."

Subject: AW: ORGLIST: 3-bromination of N-substituted pyrroles
A search in the ChemInform Reaction Library retrieved this interesting =

paper

which might solve your problem:
N-(Triisopropylsilyl)pyrrole. A Progenitor "Par Excellence" of =

3-Substituted

Pyrroles. -- (BRAY, B. L.; MATHIES, P. H.; NAEF, R.; SOLAS, D. R.; =

TIDWELL,

T. T.; ARTIS, D. R.; MUCHOWSKI, J. M.; J. Org. Chem. 55 (1990) 26,

6317-6328; Syntex Res., Inst. Org. Chem., Palo Alto, CA 94304, USA; EN)

Jost T. Bohlen

FIZ CHEMIE BERLIN

__________________
Date: Wed, 14 Jun 2000 09:33:18 -0700

From: "Chapman, Robert D"

Subject: RE: ORGLIST: 3-bromination of N-substituted pyrroles
A.H. Jackson, in R.A. Jones, "Pyrroles: Part One," says: "Thus, bromination

of 1-benzylpyrrole at 0 C, under conditions in which the hydrogen bromide

produced by the reaction is continuously removed, afforded

1-benzyl-3-bromopyrrole as the main component (55%), with none of the

2-bromo derivative" [Anderson, H.J.; Griffiths, S.J. Can. J. Chem. 1967, 45,

2227].
Robert D. Chapman, Ph.D.

Chemistry & Materials Division (Code 4T4200D)

Naval Air Warfare Center

China Lake, CA 93555 USA
__________________
Date: Thu, 15 Jun 2000 08:51:04 +0200

From: Marko Hapke

Subject: ORGLIST: 2-pyridine boronic acid
Hi!

I'm working on C-C coupling reactions using the Suzuki-Miyaura protocol

and in one case I used dimethyl 2-pyridylboronate as a coupling

component. I expected that the reaction should also be possible with the

free acid instead of using the ester. After some recherche in the

Beilstein databank and the literature there is no reference or

description of the pure 2-pyridine boronic acid ( C5H4NB(OH)2 ). Only

some early work from the 60's indicate the existence of the impure

compound (van Riel et al., Tetrahedron Lett., 1969, 3085). This is

interesting because of the commercial availability of te 3-pyridine

boronic acid and the 4-pyridine boronic acid. I would like to know if

someone came across this problem, too, or has worked on it and can give

me some suggestions concerning the synthesis and stability of the

compound.

Thanks!
Marko Hapke

University of Oldenburg

Germany
__________________
Date: Thu, 15 Jun 2000 06:24:41 -0500

From: "GPennycuff"

Subject: ORGLIST: FAB MS of primary amines/gamma-lactones
Hello all,
Has anyone ever experienced a doubling of the molecular ion and

fragmentation peaks of primary amines and/or gamma-lactones when using =

FAB MS?
It's a long shot but would appreciate anyone's comments.
Thanks
Garry
__________________
Date: Fri, 16 Jun 2000 14:54:39 -0500 (GMT)

From: "Dr. D.Basavaiah-(RS)"

Subject: Sildenafil Citrate
Dear Friends:

Can any one enlighten me as to the common and systematic name of the drug

Sildenafil Citrate
Indeed, I have access to Merck index but we have only the eleventh edition

which doesnt have this entry\

Thank you in advance
__________________
Date: Fri, 16 Jun 2000 10:37:24 +0100

From: "Vickery, Bryan (ELSLON)"

Subject: ORGLIST: RE: Sildenafil Citrate
Dear Dr. Basavaiah,
If you know the structure of Sildenafil Citrate you can draw it into AutoNom

(Using ISIS Draw) and the name will be generated for you.

This is FREE service at ChemWeb.com thanks to Beilstein

http://chemweb.com/autonom

As this is my first posting to the Organic Chemistry list I thought I would

also bring your attention to the Organic Chemistry Forum on ChemWeb.com:

http://organic.chemweb.com
Here you can use AutoNom and take advantage of FREE special promotions for

Organic Chemists. Currently Tetrahedron Letters is available at no cost ...

but this offer ends June 30th.
However TetFast will remain free, these are uncorrected versions of articles

accepted for publication in Tetrahedron Letters and are available on

ChemWeb.com within weeks of receipt by Elsevier Science.
Best regards,
Bryan
Bryan A. Vickery

Community Development Manager

ChemWeb, Inc.

84 Theobald's Road

Holborn

London, WC1X 8RR

United Kingdom
Direct: + 44 (0) 20 7611 4424

Main: + 44 (0) 20 7611 4300

Fax: + 44 (0) 20 7611 4301

E-mail: [e-mail]

___________________________________________________

ChemWeb.com: http://chemweb.com/

The Alchemist: http://chemweb.com/alchemist

Organic Chemistry Forum: http://organic.chemweb.com

__________________
Date: Thu, 15 Jun 2000 19:31:18 -0300

From: "Alejandro Roccatagliata"

Subject: ORGLIST: m-nitro-chloramphenicol
Dear Colleagues,
I would very much apreciate your good advice on this=20

problem. I am doing some research on where to buy

m-nitro-chloramphenicol (both the threo and erythro

isomers) in a few milligrams quantity as gas

chromatographic standard. Any suggestion is

welcome!
Thanks in advance

Dr. Alejandro Roccatagliata

[e-mail]

__________________
Date: Fri, 16 Jun 2000 12:07:27 +0200

From: "Joachim Podlech"

Subject: ORGLIST: Sildenafil
Try this site, the structure and the name are given here

J. Podlech

http://www.ch.ic.ac.uk/motm/viagra.html

_____________________________________________________

Priv.-Doz. Dr. Joachim Podlech

Institut fuer Organische Chemie

der Universitaet Stuttgart

Pfaffenwaldring 55

70569 Stuttgart

Deutschland

Tel. +711 / 685 4335 (Labors -4284 und -4286)

Fax +711 / 685 4269

E-mail [e-mail]
Homepage (English): http://www.uni-stuttgart.de/UNIuser/ochem/06e.htm

Homepage (Deutsch): http://www.uni-stuttgart.de/UNIuser/ochem/06d.htm

_____________________________________________________
Wer nichts als Chemie versteht, versteht auch die nicht recht.

Georg Christoph Lichtenberg

__________________
Date: Fri, 16 Jun 2000 11:12:39 +0100

From: "Vickery, Bryan (ELSLON)"

Subject: RE: ORGLIST: Sildenafil
This is for Sildenafil though isn't it?
CAS Number 139755-83-2
and not for
Sildenafil Citrate
CAS Number 171599-83-0
which is referenced is
Terrett, N.K. et al, Bioorg. Med. Chem. Lett., 1996, 6, 1819-1824

Regards
Bryan

__________________
Date: Fri, 16 Jun 2000 14:17:28 +0200

From: Jacob Zabicky

Subject: ORGLIST: Brazilian forest
Dear friends,
I forward this message that seems to be of utmost importance and urgency,

also to orglister. The Brazilian forest is one of the most important

reservoirs of natural products, undiscovered species of living organisms,

and oxygen recycle in these days of unrestrained carbon dioxide emission.

Jacob Zabicky
*******************************************
The Brazilian congress is now voting on a project that will reduce the Amazon

forest to 50% of its size. The area to be deforested is 4 times the size of

Portugal and would be mainly used for agriculture and pastures for live

stock... All the wood is to be sold to international markets in the form of

wood

chips, by multinational companies...

The truth is that the soil in the Amazon forest is useless without the

forest itself. Its quality is very acidic and the region is prone to

constant floods. At this time more than 160.000 square kilometers deforested

for the same purpose, are abandoned and in the process of becoming deserts.

We cannot let this happen. Copy the text into a new email, put your complete

name in the list below, and send to everyone you know. (Don't just forward

it cos then it will end up with rows of >>>'s ) If you are the 100th

person to sign please send a copy to [e-mail]

<mailto:[e-mail]>
Thank you.
__________________
Date: Fri, 16 Jun 2000 17:15:37 GMT

From: "Yuehui Zhou"

Subject: Re: ORGLIST: Brazilian forest
I share the concern of Jacob expressed in his posting. The deforestation is

an inevitable consequence of the globalization of the capitalism. The motto

of the capitalism and materialism is: I live for today, not for tomorrow. It

works, now we are going to lose tomorrow. So why do we worry at all?

Fighting against the materialist greediness, respecting different people and

cultures seems to be only way to save the world. I don't think that blaming

Brazilian government and people is going to work.
Yuehui Zhou
__________________
Date: Fri, 16 Jun 2000 14:03:42 -0400

From: Jack Sullivan

Subject: Re: ORGLIST: Brazilian forest (off topic)
Yuehui Zhou wrote:
> I share the concern of Jacob expressed in his posting. The deforestation is

> an inevitable consequence of the globalization of the capitalism. The motto

> of the capitalism and materialism is: I live for today, not for tomorrow. It

> works, now we are going to lose tomorrow. So why do we worry at all?

>

> Fighting against the materialist greediness, respecting different people and

> cultures seems to be only way to save the world. I don't think that blaming

> Brazilian government and people is going to work.

>

> Yuehui Zhou

>

> >Dear friends,

> >

> >I forward this message that seems to be of utmost importance and urgency,

> >also to orglister. The Brazilian forest is one of the most important

> >reservoirs of natural products, undiscovered species of living organisms,

> >and oxygen recycle in these days of unrestrained carbon dioxide emission.

> >

> >Jacob Zabicky
The root of the matter is unchecked population growth, not capitalism. The

latter feeds on the former.

Scientists can do more to influence zero- or even negative-population growth

than they can the demand for the toilet paper those wood chips will produce. The

former can be controlled. The latter is only the inevitable consequence.

--

Jack Sullivan

__________________
Date: Fri, 16 Jun 2000 20:57:04 GMT

From: "Yuehui Zhou"

Subject: Re: ORGLIST: Brazilian forest (off topic)
Capitalism live on population not feed on them. Human being has lived

millenniums without capitalism in the modern sense. People are feeding on

themselves, not by anybody and anything else. If they can't feed on

themselves they die. That's why so many people are dying of famine. No

capitalist is trying to feed on these dying people, or you know who is

feeding them and get rich? Further more, there are millions of tons of food

and materials destroyed every day to keep the prize level of the consume

goods.
People also lived millenniums in the forest and they were poor. But they

didn't try to destroy the forest to get rich. Their population would never

grow to such extent that the forest would be destroyed. Why all of a sudden

they want to destroy their environment? Because the capitalism has intruded

into their society and replaced their social value with capitalist culture

that makes them feel that they are a piece of shit. To get rid of being a

piece of shit, they want to get rich at any cost. While we are worrying that

the forest will be destroyed, the biggest profiteers are still capitalist

and the victims will be Brazilian at first and then the whole population of

the world unless your Dad is so rich to get you to another planet. Then you

would be an exception. Unfair is that the capitalists can at least have

better today.
But if you come back to my suggestion that people are feeding on themselves,

which is actually the fact, so that they deserve our respect. So people

would keep their pride and they would not so eager to buy the goods of

capitalists, so they would not so eager to destroy the forest to exchange

the western goods (Marlboro and Macdonald for example). So the forest is

saved. Then you may worry that capitalists have no money to make. But why

should you? You are feeding on yourself too. You are not living on

capitalism.

But as I said it's probably too late since you as an educated person even

can't understand how capitalism works, other people are much easier to fool,

so the real solution can only be reached after the global catastrophe.
Yuehui Zhou

__________________