Tez özetleri Astronomi ve Uzay Bilimleri Anabilim Dalı

"2-Nitrohalobuta-1,3-Dien’in Merkaptokumarin İle Reaksiyonundan S- Ve N, S-Sübstitüe Bileşiklerin Sentezi"

Bu çalışmaya trikloroetilen’in radikalik dimerleşmesi ile hazırlanan polihalojenli organik bileşiğin sentezlenmesi ve çeşitli reaksiyonları ile elde edilen 4-bromo-1,1,3,4-tetrakloro-2-nitro-1,3-butadien bileşiğinin (1) sentezlenmesi ile başlandı.

Çalışmanın sonraki aşamasında (1) bileşiğinin tiyol ile olan reaksiyonu incelendi. Çalışmaya 4-bromo-1,1,3,4-tetrakloro-2-nitro-1,3-butadien (1) bileşiğinin 7-merkapto-4-metilkumarin (5) ile reaksiyonundan 4-bromo-1,3,4-trikloro-2-nitro-1-(7-kumarintiyo-4-metil)-1,3-butadien (2) ve 4-bromo-3,4-dikloro-2-nitro-1,1-bis(7-kumarintiyo-4-metil)-1,3-butadien (3) bileşikleri sentezlenerek devam edildi.

Çalışmanın son aşamasında ise elde edilen mono(tiyo)sübstitüe nitrodien bileşiğinin bazı piperazin ,piperidin türevleri ve 1,4-diokso-8-azaspiro[4,5] dekan ile reaksiyonları incelendi.

4-Bromo-1,3,4-trikloro-2-nitro-1-(7-kumarintiyo-4-metil)-1,3-butadien (2) bileşiği, sırasıyla N-( 4-fluorofenil)-piperazin (6), N-fenil piperazin (7), N-(2-metoksifenil) -piperazin (8), N-etoksikarbonil piperazin (9), N-formil piperazin (10), N-(2-florofenil) piperazin (11), N-(4-metil) piperidin (12), N-(4-benzil) piperidin (13), 1,4-diokso-8-azaspiro[4,5] dekan (14) ile reaksiyona sokuldu.Reaksiyonlar sonucunda sırasıyla N-[1-(7-kumarintiyo-4-metil)-4-bromo-3,4-dikloro-2-nitro-1,3-butadienil)]-N'-[4-fluorofenil]-piperazin (2a) ,N-[1-(7-kumarintiyo-4-metil)-4-bromo-3,4-dikloro-2-nitro-1,3-butadienil)]-N'-fenilpiperazin(2b),N-[1(7kumarintiyo-4-metil)-4-bromo-3,4-dikloro-2-nitro-1,3-butadienil)]-NI--[1-(2- metoksifenil)] piperazin (2c), N-[1-(7-kumarintiyo-4-metil)-4-bromo-3,4-dikloro-2-nitro-1,3-butadienil)]-NI-etoksikarbonil piperazin (2d), N-[1-(7-kumarintiyo-4-metil)-4-bromo-3,4-dikloro-2-nitro-1,3-butadienil)]-N'-[formil]-piperazin (2e), N-[1-(7-kumarintiyo-4-metil)-4-bromo-3,4-dikloro-2-nitro-1,3-butadienil)]-N'-[2-fluorofenil]-piperazin (2f), 4-bromo-3,4-dikloro-2-nitro-1-(7-kumarintiyo-4-metil)-1-(4-metil piperidinil)-1,3-butadien (2g), 4-bromo-3,4-dikloro-2-nitro-1-(7-kumarintiyo-4-metil)-1-(4-benzilpiperidinil)-1,3-butadien(2h),4-bromo-3,4-dikloro-2-nitro-1-(7-kumarintiyo-4-metil)-1-(1,4-dioksoazaspiril)-1,3-butadien(4) bileşikleri sentezlendi.

Ürünler kristallendirme veya kolon kromatografisi yöntemlerinden biriyle saflaştırılmıştır. Bu yeni ürünlerin yapıları mikroanaliz ve spektroskopik yöntemler (1H-NMR, APT, IR, MS, UV gibi) ile aydınlatılmıştır.

“The Synthesis of S-And N,S-Substituted Compounds From The Reactıons Of 2-Nitrohalobuta-1,3-Diene With Mercap to Coumarin”

Our investigations started with the synthesis of polyhalogenated butenes which is easily obtained from the radical dimerization of trichloroethylene and its subsequent reactions leading to the compound 4-bromo-1,1,3,4-tetrachloro-2-nitro-1,3-butadiene (1).

In the following step, reaction of thiol with the compound (1) were investigated. Therefore, 4-Bromo-1,3,4-trichloro-2-nitro-1-(7-coumarinthio-4-methyl)-1,3-butadiene (2), and 4-Bromo-3,4-dichloro-2-nitro-1,1-bis (7-coumarinthio-4-methyl)-1,3-butadiene (3) were synthesized from the reactions of 4-bromo-1,1,3,4-tetrachloro-2-nitro-1,3-butadiene (1) with 7-mercapto-4-methylcoumarin.

In the last step, reactions of derivatives of piperazine, piperidine and 1,4-dioxoazospiro [4,5] decan with the mono(thio)substituted nitrodien compound were explored.

To obtain N-[1-(7-coumarinthio-4-methyl)-4-bromo-3,4-dichloro-2-nitro-1,3-butadienyl)]-N'-[4-fluorophenyl]-piperazine (2a), N-[1-(7-coumarinthio-4-methyl)-4- bromo-3,4-dichloro-2-nitro-1,3-butadienyl)]-NI-phenyl piperazine (2b), N-[1-(7-coumarinthio-4-methyl)-4-bromo-3,4-dichloro-2-nitro-1,3-butadien­yl)]-N'-[1-(2-methoxyphenyl)]-piperazine (2c), 4- N-[1-(7-coumarinthio-4-methyl)-4-bromo-3,4-dichloro-2-nitro-1,3-butadien­yl)]-NI-ethoxycarbonyl piperazine (2d), N-[1-(7-coumarinthio-4-methyl)-4-bromo-3,4-dichloro-2-nitro-1,3-butadien­yl)]-NI-[formyl]-piperazine (2e), N-[1-(7-coumarinthio-4-methyl)-4-bromo -3,4-dichloro-2-nitro-1,3-butadien­yl)]-N'-[2-fluorophenyl]-piperazine (2f), 4-Bromo-3,4-dichloro-2-nitro-1-(7-coumarinthio-4-methyl)-1-(4-methyl piperidinyl)-1,3-butadiene (2g), 4-Bromo-3,4-dichloro-2-nitro-1-(7-coumarinthio-4-methyl)-1-(4-benzyl piperidinyl)-1,3-butadiene (2h) and 4-bromo-3,4-dichloro-2-nitro-1-(7-coumarinthio-4-methyl)-1-(1,4-dioxoazospiryl)-1,3-butadiene (5) the reactions of 4-bromo-1,3,4-trichloro-2-nitro-1-(7-coumarinthio-4-methyl)-1,3-butadiene (2) with N-( 4-fluorophenyl)- piperazine (6), N- phenyl piperazine (7), N-(2- methoxyphenyl)- piperazine (8), N- ethoxycarbonyl piperazine (9), N- formyl piperazine (10), N-(2-fluorophenyl) piperazine (11), N-(4-methyl piperidinyl) (12), N-(4-benzyl piperidinyl )(13), 1,4-dioxoazospiro [4,5] decan (14) were performed, respectively.

The novel products were purified either crystallization or via column chromatography. Structure of these novel products were characterized by microanalysis, spectroscopic methods (IR, 1H-NMR, APT , UV and MS).