Unusual formation of a thiacyclopent-2-ene by the reaction of 4,4?-dimethoxythiobenzophenone with tetracyanoethylene
作者:Kentaro Okuma、Yoshikazu Tsujimoto
DOI:10.1002/hc.1041
日期:——
The reaction of 4,4′-dimethoxythiobenzophenone (1a) with tetracyanoethylene (TCNE) afforded an unusual type of 2:1 adduct with the structure of thiacyclopent-2-ene (5a). On the other hand, the reaction of thiobenzophenone (1b) with TCNE afforded the corresponding thiophene, the normal 2:1 adduct (2b). The mechanism of the formation of 5a is discussed. © 2001 John Wiley & Sons, Inc. Heteroatom Chem
4,4'-二甲氧基噻二苯甲酮 (1a) 与四氰基乙烯 (TCNE) 的反应提供了一种不寻常的 2:1 加合物,其结构为 thiacyclopent-2-ene (5a)。另一方面,噻二苯酮 (1b) 与 TCNE 的反应得到相应的噻吩,即正常的 2:1 加合物 (2b)。讨论了5a的形成机制。© 2001 John Wiley & Sons, Inc. 杂原子化学 12:259–262, 2001