Synthesis and Reactivity of New 1,4-Bis(alkylthio)-3,6-diarylthieno[3,4-<i>c</i>]thiophene Derivatives
作者:Noboru Matsumura、Hirokazu Tanaka、Yoshio Yagyu、Kazuhiko Mizuno、Hiroo Inoue、Kiwamu Takada、Masanori Yasui、Fujiko Iwasaki
DOI:10.1021/jo971698a
日期:1998.1.1
1,4-Bis(tert-butylthio)-3,6-diphenyl- and 3,6-di(2-thienyl)thieno[3,4-c]thiophenes (2a,b)were synthesized from 2-(tert-butylthio)-3-phenyl- and 3-(2-thienyl)cyclopropenethiones (1a,b) and triphenylphosphine in dry benzene at 50 degrees C, although similar treatment of 2,4,6-triisopropylphenyl, N,N-diethylamino, pyrrolidino, and diphenyl-substituted cyclopropenethiones (1c-h) did not result in the production
由2-(叔-基)合成1,4-双(叔丁硫基)-3,6-二苯基和3,6-二(2-噻吩基)噻吩并[3,4-c]噻吩(2a,b)。丁硫基-3-苯基-和3-(2-噻吩基)环丙烯硫酮(1a,b)和三苯基膦在干燥的苯中于50摄氏度,尽管对2,4,6-三异丙基苯基,N,N-二乙氨基,吡咯烷,和二苯基取代的环丙烯硫酮(1c-h)并未产生相应的噻吩并[3,4-c]噻吩衍生物。描述了可能形成2a,b的反应途径。用三氟乙酸(TFA)对2a进行质子化,得到4-(叔丁硫基)-3,6-二苯基噻吩并[3,4-c]噻吩-1(3H)-硫酮(13a),用氢化钠处理然后通过噻吩并[3]的再生,将异丙基碘化物生成4-(叔丁硫基)-3,6-二苯基-1-(异丙硫基)噻吩并[3,4-c]噻吩(16),4-c]噻吩环系统,这使得其他烷硫基取代的噻吩并[3,4-c]噻吩衍生物的合成成为可能。2a,b与N-苯基马来酰亚胺(NPM)的反应主要在