Sulfur-containing Heterocycles Derived by Reaction of N-Thioacylamino Alcohols with Lawesson’s Reagent and Saponification of N-Thioacylamino Esters
摘要:
The treatment of 2-N-thioacylamino alcohols (1) with Lawesson's reagent [LR: 2,4-bis(p-methoxyphenyl)-1,3,2,4-dithiaphosphetane 2,4-disulfide] afforded the sulfur-containing heterocycles, 1,3-thiazolines (2) in moderate to good yields, exclusively. The saponification of N-thioacylamino esters (4), which were prepared by the thionation of N-acylamino esters (3) with LR, with K2CO3 gave 3,1-benezothiazines (5) and 3,1-benzoxazines (6).
Synthesis and reactions of 4<i>H</i>-3,1-benzothiazines
作者:S. I. El-Desoky、E. M. Kandeel、A. H. Abd-El-Rahman、R. R. Schmidt
DOI:10.1002/jhet.5570360124
日期:1999.1
This study is directed towards the synthesis of the pyrrolo[1,2-α]indole skeleton which is the essential ring system of the active antitumor miomycins. To this end a number of fused heterocycles such as benzothiazines, benzoxazines, indoles and quinolines were synthesized. The structures of the new compounds were assigned by ir, 1H nmr and ms-data.
这项研究针对吡咯并[1,2-α]吲哚骨架的合成,该骨架是活性抗肿瘤霉素的必不可少的环系统。为此目的,合成了许多稠合的杂环,例如苯并噻嗪,苯并恶嗪,吲哚和喹啉。新化合物的结构由ir,1 H nmr和ms数据指定。
Sulfur-containing Heterocycles Derived by Reaction of N-Thioacylamino Alcohols with Lawesson’s Reagent and Saponification of N-Thioacylamino Esters
作者:Takehiko Nishio、Hiroshi Sekiguchi
DOI:10.3987/com-02-s(m)9
日期:——
The treatment of 2-N-thioacylamino alcohols (1) with Lawesson's reagent [LR: 2,4-bis(p-methoxyphenyl)-1,3,2,4-dithiaphosphetane 2,4-disulfide] afforded the sulfur-containing heterocycles, 1,3-thiazolines (2) in moderate to good yields, exclusively. The saponification of N-thioacylamino esters (4), which were prepared by the thionation of N-acylamino esters (3) with LR, with K2CO3 gave 3,1-benezothiazines (5) and 3,1-benzoxazines (6).