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

Date: Mon, 19 Jun 2000 04:49:57 GMT

From: "Yuehui Zhou"

Subject: Fwd: Re: ORGLIST: Brazilian forest
>

>It will do no good to blame the Brazilian government for the loss of the

>rainforest. The perceived needs of humanity is all that is needed to

>destroy

>it. Greed and materialism are not necessary, the growing needs of a

>growing

>world population is enough. In addition there are rainforest sources

>outside

>Brazil. All across equirotial Africa and the Indian subcontenent, the

>Pacific Islands and more. Think on it. The first problem is human

>population.

> L. H. Brannigan

__________________
Date: Mon, 19 Jun 2000 04:50:27 GMT

From: "Yuehui Zhou"

Subject: Fwd: Re: ORGLIST: Brazilian forest (off topic)
>From: [e-mail]

>To: [e-mail]

>Subject: Re: ORGLIST: Brazilian forest (off topic)

>Date: Fri, 16 Jun 2000 22:23:23 EDT

>

>Yuehui Zhou apparently knows little of capitalism, history, geography or

>the

>fruits of the rainforest itself. People have existed for many centuries

>without KNOWINGLY threatening the environment because the world population

>has not been great. It has been the fruits of the rainforest to a

>significant extent that has given a more secure life and increased the

>world

>population. Capitalism has nothing to do with it. Of course English

>capitolism threatened Indian culture, American capitalism threatens much of

>the environment. However, note the world destruction caused by communism,

>the destruction of the well being of the populations of many countries.

>Consider the destructive nature of Facism and Theocracies. Don't lay it

>all

>on the capitalists, survival and security are sought by all humans. NOW

>LET

>US GET BACK TO ORGANIC CHEMISTRY, A POSSIBLE SOURCE OF SOLUTIONS.

> L.H. Brannigan

__________________
Date: Mon, 19 Jun 2000 05:15:51 GMT

From: "Yuehui Zhou"

Subject: Re: ORGLIST: Brazilian forest (off topic)
Smart Brannigan
It seems that I need very clear language for you to understand what my

points are.

1) The blind belief in technology is no good for human society as a whole.

It may bring material advantages for certain nations at first. And it serves

also for certain scientists to feel good.
2) Destroying the aboriginal cultures that fit the economic basis of local

societies and therefore destroying the balance between the population growth

and economical basis of the local societies, which led population growth out

of control bears main part of the responsibility for the environmental

damages.
3) Communism is no justification for materialistic greediness. On the

contrary, communism was a reaction of the human society to balance this

materialistic greediness. It has inevitably failed because it requires

everybody to be up to its moral standards, which is impossible. But the

existence of the communism has at least delayed the cancer-like expansion of

the materialistic greediness and therefore the damage of the environmental

damages. If we allow our

greediness devour everything, there will be another reaction of human

society to balance it,post-communism or whatever you call it.
4) Though capitalism self has nothing to blame for environmental damage, it

needs to be controlled, so that it will not transform into pure

materialistic greediness. It is the greediness that destroys (read carefully

my previous postings). And greediness is the basis of the capitalism.

5) You and everybody live on your and their work, not on capitalism.
6) Natural scientists without social conscience may be excellent in their

specialties, but definitely nuts when it come to the social issues, as you

are suggesting the chemistry will resolve the environmental damage, as if

you could invent trees that nobody can cut down and don't need watering.

Then try hard, buddy!
Yuehui Zhou, Chemist (who has no ambition to invent trees that don't need

watering)

__________________
Date: Mon, 19 Jun 2000 09:25:34 +0200

From: Luis Fernando Garcia Alles

Subject: ORGLIST: Brazilian forest
I know this is not the place to write this kind of things, and I am not

going to keep on doing it, but... I just wanted to express my support and

adhere to all commentaries by Yuehui Zhou, since he sais exactly what I

feel inside of me when I see or listen in TV, radio or whereever news about

the world where we live. Nowadays the wold seems to be more and more and

economic world, where the new rules are: be the best, don't relax, don't

waste time... Materialism, Capitalism, whatever the right term to call the

system that is now being created, is from my point of view leaving the door

open to the crude expression of mankind annimal values, specially selfiness.

I know, and everybody knows that population increase is becoming a major

problem for many countries and for the whole world. But I am sure, as

Yuehui says that Capitalism does not have anything to do with that. I am

sure that the problem of the Brazilian forest does not have anything to do

with that, but mainly with the need of making money of a very selected

group of people, need that is absolutely understandable under the present

regime of values.

Well, I just wanted to open my mouth and to say what I felt when I read

the mails on this topic.

Have a very good day, and from time to time open the window and look at

the trees, if you can seee some around... If not, continue working, make

money and don't think, just keep on working...

__________________

Date: Mon, 19 Jun 2000 09:38:41 +0100

From: "J.Aires de Sousa"

Subject: ORGLIST: This is an ORGANIC CHEMISTRY mailing list
Dear ORGLIST members,
I can't see much Organic Chemistry in the last messages

concerning the Brazilian forest. Let me remind you that

discussing Organic Chemistry is the reason why hundreds of

people subscribe and use ORGLIST.

Joao Aires de Sousa

ORGLIST coordinator

--

Joao Aires de Sousa, Ph.D.

e-mail: [e-mail]
Departamento de Quimica, Fac. Ciencias e Tecnologia,

Univ. Nova de Lisboa, 2825 - 114 Caparica, Portugal

__________________
Date: Mon, 19 Jun 2000 10:51:25 +0200

From: "Dr. F.O. Shode"

Subject: ORGLIST: BENZOFURANOTROPONES
Dear Colleagues,

I would like to know if there is any reference in the literature to any

member of the generic class- BENZOFURANOTROPONES.

Thanks in advance for your kind help.

Regards,

Francis.

__________________
Date: Mon, 19 Jun 2000 11:42:27 +0200

From: "Yantao Chen"

Subject: ORGLIST: Me2S
Does anybody have met the complexation of Me2S with alcohol or di-ol =

group?
Yantao Chen

__________________
Date: Mon, 19 Jun 2000 14:45:03 GMT

From: "Yuehui Zhou"

Subject: Re: ORGLIST: BENZOFURANOTROPONES
Though this is not exactly what you want, it may help to approach your

subject:
Magnetic Circular Dichroism Spectra and Electronic Spectra of

4,5-Benzotropone and Thiopheno[c]tropone,

Spectrochim, Acta. Vol.48A, 839, 1992

Yuehui Zhou
__________________
__________________
Date: Tue, 20 Jun 2000 09:58:41 -0500 (GMT)

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

Subject: ORGLIST: Sn problem
dear friends
i am handling the project of allylation using allyl tributyl tin. In this

getting problem with Sn when the purification of final product, always nmr

shows lot of tin, by column chromatography looks same polarities. So how

to remove this Sn from the reaction mixture.any methods are available for

this problem?

Thanks in advance for your kind help.

regards

S.Bandaru

Graduate student
**************************************************************************

Research Scholar

School of chemistry Telephone: [phone] extn:4807

University Of Hyderabad

Hyderabad- 500 046

India
e-mail: [e-mail]

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

__________________

Date: Tue, 20 Jun 2000 11:46:03 +0200

From: Kamil Wojciechowski

Subject: ORGLIST: Schiff bases
Hello, I have some problems with salophenes (Schiff bases). The problem

is as follows: the synthesis of salophene from salicylaldehyde and

o-phenylenediamine is performed in MeOH/CH2Cl2. But once synthesised,

when dissolved in CH2Cl2 seems to be not stable. UV/VIS spectra confirm

that in CH2Cl2 solution the peaks from salicyaldehyde appears. That may

indicate decomposition of salophene. But is it possible that so

"neutral" solvent as dichloromethane is able to destroy the imine

bonds ?

Thank you in advance

--

Kamil Wojciechowski, Ph.D. student

Department of Analytical Chemistry,

Warsaw University of Technology,

Noakowskiego 3, 00-664 Warsaw, Poland.

Tel.: [phone]

e-mail: [e-mail]

[e-mail]

http://www.ch.pw.edu.pl/~kamilwoj/index.html

__________________

Date: Tue, 20 Jun 2000 13:26:38 GMT

From: "Yuehui Zhou"

Subject: Re: ORGLIST: Schiff bases
Are you sure that the reaction is complete?
__________________
Date: Tue, 20 Jun 2000 10:05:45 -0400 (EDT)

From: Christopher Paul Borella

Subject: Re: ORGLIST: Schiff bases
We deal with imines all the time in our lab, I have never seen one that

was unstable in dry CH2Cl2, any moisture however will decompose the imine

back to the starting aldehyde and amine. There are also many that are

unstable to light so the act of taking the UV could start decomposition,

however this normaly does not give the starting material as a product but

rather a complex mixture. Hope this helps

Chris Borella
__________________
Date: Tue, 20 Jun 2000 16:49:35 +0100

From: "Vickery, Bryan (ELSLON)"

Subject: ORGLIST: International Young Chemistry Writer of the Year
Sorry for any crossposting.
Dear all,
Please bring this competition to the attention of any interested people.
The 'International Young Chemistry Writer of the Year' Award for 2000,

organised by The Alchemist (http://chemweb.com/alchemist) and sponsored by

SciQuest.com (http://www.sciquest.com/) will be announced at the CINF

reception at the ACS National Meeting, Washington, DC on 20 August, 2000.

DEADLINE: 30 June, 2000
The deadline for submissions to the competition is fast approaching (30

June, 2000).

Entrants aged 16-30, should write a feature style article on any current

topic related to chemistry. The article should be 1000-2000 words in length

and MUST not be a research paper.

The winner will receive an expenses paid trip to Washington, DC to attend

the ACS National Meeting, collect a check for $1500 and see the article

published in The Alchemist. Two runners-up will receive $500 each.

The judging panel for the 2000 competition include:
Dr. Jonathan Goodman (Cambridge University)

Dr. Lubov Strelnikova (editor, Chemistry and Life, Moscow)

Dr. John Borchardt (Chemistry Columnist)

Dr. David Bradley (Science Writer)

For more information and to enter:
http://chemweb.com/youngwriter

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
Analytical Chemistry Forum: http://analytical.chemweb.com

Catalysis Forum: http://catalysis.chemweb.com

Electrochemistry Forum: http://electro.chemweb.com

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

__________________
Date: Tue, 20 Jun 2000 15:23:39 +0200

From: Jacob Zabicky

Subject: Re: ORGLIST: Schiff bases
Hello Kamil,
Just a few comments that may be helpful to solve your problem. First,

absolute dryness of the solvent has to be assured. Schiff base formation is

a reversible process, so it's advisable to somehow remove the water

produced during yhe carbonyl-amino condensation. Weak basic catalysis to

the hydrolysis can be provided by the imine or residuals of

o-phenylenediamine, whilst weak acid catalysis can stem from the phenolic

hydroxy groups.
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: Tue, 20 Jun 2000 22:11:02 PDT

From: "N prabagaran"

Subject: enantiomer of

(4a-5-10b)-3,4,4a,5,6,10b-hexahydro-5-phenyl-2H-pyrano[3,2-c]quinoline
hello,

does any one know the optical rotation of any enantiomer of

(4a-5-10b)-3,4,4a,5,6,10b-hexahydro-5-phenyl-2H-pyrano[3,2-c]quinoline

i am searching in literature but not obtained still.

thanks in advance.

prabagaran

researc scholar

__________________

Date: Wed, 21 Jun 2000 11:11:53 IST

From: "Jatin Shah"

Subject: Light organic powders
dear fellow chemists,

does anybody have experience in increasing the bulk density of light organic

powders. decreasing the particle size has not made any difference.

thanks in advance.

P.S.

Dear Mr. Jacob,

your suggestion was very helpful and have suceeded in improving the washing

quality.

thanks again,

jatin

__________________
Date: Wed, 21 Jun 2000 12:06:51 -0500 (GMT)

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

Subject: ORGLIST: Names of elements from At.No. 106 on wards
Dear Friends:

Can any one give the names of the elements from Atomic number 105 onwards

and latest information reg. the total number of elements.

Thanking you in advance

Krish
__________________
Date: Wed, 21 Jun 2000 02:42:02 -0400

From: "Roux, Stephane"

Subject: RE: ORGLIST: Schiff bases
Hi
I had the same problem a few years ago,
you should insure that your CH2Cl2 is as dry as possible

and more important, does not contain any acidic traces

due to decomposition of itself.
In fact the proble arise when you evaporate the solvent : the few acidic traces

are concentrated and so.....

Hope this help
SR
****************************************

Dr Stephane Roux

__________________
Date: Wed, 21 Jun 2000 10:31:38 +0200

From: Jacob Zabicky

Subject: Re: ORGLIST: Names of elements from At.No. 106 on wards
Dear Krish,
In the site below you may find the answer to your querry.
The Table of Isotopes is maintained by Lawrence Firestone of Berkeley's

National Lawrence Radiation Laboratory. The site provides very detailed

data on nuclear structures in atoms, energies, and decay products.
access: http://ie.lbl.gov/toi.htm

taken from: Choice

Jacob
>Dear Friends:

>Can any one give the names of the elements from Atomic number 105 onwards

>and latest information reg. the total number of elements.

>Thanking you in advance

>Krish

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

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: Wed, 21 Jun 2000 09:57:54 +0100 (BST)

From: "G.P.Moss"

Subject: Re: ORGLIST: Names of elements from At.No. 106 on wards
The IUPAC names for these elements and the temporary system for naming

higher numbered elements until an approved name is given can be obrained

from:
http://www.chem.qmw.ac.uk./iupac/AtWt/
Gerry Moss

_________________________________________________________________________

Dr GP Moss Telephone: [phone]

Department of Chemistry

Queen Mary & Westfield College Facsimile: [phone]

Mile End Road

London E1 4NS, United Kingdom E-mail: [e-mail]
World Wide Web server: http://www.chem.qmw.ac.uk/

IUPAC chemical nomenclature data base: http://www.chem.qmw.ac.uk/iupac/

IUBMB biochemical nomenclature data base: http://www.chem.qmw.ac.uk/iubmb/

__________________

Date: Wed, 21 Jun 2000 18:30:49 +0200

From: "Witek Mozga"

Subject: Re: ORGLIST: Schiff bases
Hello Kamil,
I once performed the synthesis of benzylamine amide in CH2Cl2

and observed benzaldehyde formation. I explained it to myself that

the amine reacted with CH2Cl2 to give imine:
Ph-CH2-NH=CH2
that was in equilibrium with the form in which the double bond

migrated to give the more stable conjugated system:

Ph-CH2-NH=CH2 <-> Ph-CH2=NH-CH3
after aqueous workup the latter compound hydrolysed to give

benzaldehyde and methylamine.

If I am right it means that CH2Cl2 is not so "neutral" solvent for

amines afterall. What do you think?

Best regards,

Witek
Pozdrowienia z Lodzi.

__________________
Date: Wed, 21 Jun 2000 18:23:59 -0500 (CDT)

From: Ivan Tubert Brohman

Subject: Re: ORGLIST: Names of elements from At.No. 106 on wards
106 Seaborgium

107 Bohrium

108 Hassium

109 Meitnerium

As far as I know, these names were approved by IUPAC in 1997, and the

newest elements are 110,111, 112, 114, and 116

__________________
Date: Thu, 22 Jun 2000 13:53:02 +0300

From: Constantin Tanase

Subject: ORGLIST
Dear coleagues,

In the treatment of an alkene-diacid compound with 3 equiv. Hg(BF4)2 it

is formed an lacton-acid compound (isolated and characterized by 1H- and 13C-NMR) by

participation of the closer COOH group. The disappearance of the

starting compound is relatively fast but after a few hours an abundant

precipitate is formed. I didn't isolate this

yet. Is it possible to be an internal Hg-complex, resulted by

substitution of a BF4-group with the free carboxyl group? I try to isolate it, but I'm afraid

that I couldn't analize it too quickly ?

In the similar reaction with a compound having CH2OH groups instead of

COOH groups this precipitate didn't appeared.

I contacted ORGLIST since 3 days. I wish an advise on this problem.

Sincerely yours,

Tanase Constantin

Senior Scientist

__________________

Date: Thu, 22 Jun 2000 14:27:53 +0200

From: Jonas Nilsson

Subject: ORGLIST: Request for 826-35-7
Dear List members.

I am i urgent need of the chemical

Dimethyl trans-1,2-cyclopropanedicarboxylate Cas: 826-35-7 (racemic)
However the only company i found as a supplier (Acros organics) seems to

have problems with their synthesis and can not give any delivery date.

So my request is as following. Does anyone of You have this substance

inhouse, and can You maybe spare some. I will offcourse pay what you

request.
Any amount from 1-10 grams would be of interest.
Best regards

/Jonas Nilsson

--

_____________________ _____________________

| Jonas Nilsson | | |

|Linkoping University | | Telephone |

| IFM | | --------- |

| Dept. of Chemistry | | work: [phone] |

| 581 83 Linkoping | | fax: [phone] |

| Sweden | | home: [phone] |

|_____________________| |_____________________|

__________________

Date: Thu, 22 Jun 2000 13:51:06 +0100

From: "Vickery, Bryan (ELSLON)"

Subject: RE: ORGLIST: Request for 826-35-7
Jonas,
I have carried out a quick search on the Available Chemicals Directory (ACS)

from MDL, hosted on ChemWeb.com (Find it under:

http://chemweb.com/databases) but it shows only 1 supplier.
I have also tried ChemACX from CambridgeSoft and found that Acros are the

only supplier listed here. Sorry I couldn't help.

Regards,
Bryan
________________________________________________________

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

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
__________________
Date: Thu, 22 Jun 2000 13:54:53 +0100

From: "Vickery, Bryan (ELSLON)"

Subject: RE: ORGLIST: Request for 826-35-7
Did I say ACS? Slip of the tongue ... of course I meant ACD!
Apologies to my friends at the ACS and MDL!
Regards,
Bryan
__________________