Reactions with sultones V*, synthesis of some new 5-membered heterocyclic sultams.

被引：0

作者：

AbdelBary, H ^{[1
]}

AbdElMagied, AES ^{[1
]}

ElZayat, WS ^{[1
]}

Ismail, II ^{[1
]}

机构：

[1] NATL RES CTR,CAIRO,EGYPT

来源：

AFINIDAD | 1997年 / 54卷 / 468期

关键词：

triazolo-; oxadiazolo-; and thiadiazolo-sultams aroyl-hydrazides;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Triazoles 3a-d, oxadiazoles 4a,b and thiadiazoles 4c,d were obtained by different routes of cyclization of 2a-d depending on the reaction condition. Reaction of 1 with CS2, in boiling ethanol, gave the mercapto-oxadiazole 5; while the potassium thiocarbazide salt 6 was obtained when the reac tion takes place at r.t. 6 with hydrazine hydrate was cyclized to the amino-triazole 7. Triazolo-thiazoles 8a,b were formed when 7 reacted with either formic acid or acetic anhydride, respectively. Aroyl hydrazides 9a-d were obtained through reaction of 1 with the appropriate acid chloride. Cyclization of 9a-d using phosphorous oxychloride afforded the corresponding oxadiazoles 10a-d (Chart-1).

引用

页码：139 / 142

页数：4