已经研究了在各种反应条件下不同取代的1,4-硫氮杂的重排。2-苯基-4-甲硫基-苯并[ b ] -1,4-噻氮平(3)和2-苯基-苯并[ b ] -1,4-硫氮杂-4(5H)-硫酮(2)在60℃下挤出硫。碱的催化作用,并分别重排为2-甲硫基-4-苯基-喹啉(4)和4-苯基-硫代咔唑(6)。在相同条件下,2-苯基-4-甲硫基-2,3-二氢-苯并[ b ] -1,4-噻氮平(11)重排为2-苯乙烯基-苯并噻嗪(12),而二氧化物18显示没有重新排列的趋势。通过用多磷酸处理,可以将2,7-二苯基-六氢-1,4-硫氮杂-5-酮(19)转化为2-苯乙烯基-5-苯基-2-噻唑啉(20)。讨论了这些重排的可能机制。
The synthesis of a new series of N‐2 alkylamino derivatives of 4,5‐dihydro‐s‐triazolo[3,4‐d]‐1,5‐benzothiazepine has been accomplished starting from 2,3‐dihydro‐1,5‐benzothiazepin‐4(5H)ones and their 2‐methyl and 2‐aryl derivatives. ‐ All the compounds were tested in vitro for their antimicrobial activity, but none of them showed remarkable activity. ‐ The tricyclic compounds 7a‐j, 8a‐j, 9a‐j, 10a‐j
Studies on the chemistry of<i>O,N</i>- and<i>S,N</i>-containing heterocycles.<b>3</b>. Synthesis of 1,5-benzothiazepines with potential CNS activity
作者:Herbert Bartsch、Thomas Erker
DOI:10.1002/jhet.5570250421
日期:1988.7
The synthesis of a series of novel triazolo[3,4-d][1,5]benzothiazepines 6 and 7, obtained from the activated 1,5-benzothiazepine derivatives 3 and carbohydrazides 4, is described. Under mild reaction conditions some intermediates 5 can be isolated.
描述了由活化的1,5-苯并噻吩并烷衍生物3和碳酰肼4获得的一系列新的三唑并[3,4- d ] [1,5]苯并噻氮并烷6和7的合成。在温和的反应条件下,可以分离出一些中间体5。
Studies on the chemistry of<i>O,N</i>- and<i>S,N</i>-containing heterocycles. 16. Investigations on the synthesis of new tricyclic β-lactams<i>via</i>[2+2]cycloaddition reaction
作者:Susanne Pippich、Herbert Bartsch、Thomas Erker
DOI:10.1002/jhet.5570340319
日期:1997.5
Starting from methylthioimidates 1–8 a series of corresponding tricyclic β-lactams was synthesized via [2+2]cycloaddition with ketenes generated in situ from substituted acetyl chlorides. Dependent on the bicyclic starting material and on the substituent of the corresponding acetyl chloride N-acetyl derivatives were obtained as by- or sole products.
Verfahren zur Kernchlorierung von aromatischen Kohlenwasserstoffen
申请人:BAYER AG
公开号:EP0368063A1
公开(公告)日:1990-05-16
Aromatische Kohlenwasserstoffe, die durch geradkettiges oder verzweigtes C₁-C₁₂-Alkyl oder durch C₃-C₈-Cycloalkyl monosubstituiert sind, können in Gegenwart von Friedel-Crafts-Katalysatoren in flüssiger Phase im aromatischen Kern chloriert werden, wenn man als Co-Katalysatoren cyclische benzokondensierte Imine oder Benzo[f]-1,4-thiazepine einsetzt. Hierbei kann ein erhöhter Anteil an p-Isomeren erhalten werden.