The title compound undergoes [4 + 2] Diels–Alderreactions with a number of dienophiles to provide the corresponding cycloadducts.
标题化合物与许多亲双烯体进行[4 + 2] Diels-Alder反应,以提供相应的环加合物。
Facile synthesis of 4,6-dihydrothieno[3,4-b]thiophene 5,5-dioxide. A synthetic equivalent of 2,3-dihydro-2,3-dimethylenethiophene
作者:Ta-Shue Chou、Chung-Ying Tsai
DOI:10.1039/c39910001287
日期:——
4,6-Dihydrothieno[3,4-b]thiophene 5,5-dioxide 4, a stable precursor of 2,3-dihydro-2,3-dimethylenethiophene 3, conveniently prepared from 4-bromo-3-chloro-2,3-dihydrothiophene S,S-dioxide, can easily be alkylated and loses SO2 upon heating so that 4 serves as a useful synthetic equivalent of 3.
4,6-二氢噻吩并[3,4- b ]噻吩-5,5-二氧化物4,2,3-二氢-2,3- dimethylenethiophene的稳定前体3,方便地从4-溴-3-氯-2-制备3-二氢噻吩S(S-二氧化物)很容易被烷基化,加热时失去SO 2,因此4可用作3的有用合成当量。
Chou, Ta-Shue; Tsai, Chung-Ying, Journal of the Chinese Chemical Society, 1993, vol. 40, # 6, p. 581 - 586
A Cyclization Approach toward Five-Membered Heteroaromatic<i>o</i>-Quinodimethanes<i>via</i>Fused-3-Sulfolenes
作者:Ta-Shue Chou、Chung-Ying Tsai、Shwu-Jiuan Lee
DOI:10.1002/jccs.199700045
日期:1997.6
AbstractA general strategy involving the zincation of 4‐bromo‐3‐chloro‐2‐sulfolene, in situ condensation with an α‐heterosubstituted acetaldehyde, and subsequent cyclization reaction as the key steps toward the synthesis of furano‐ and thieno‐3‐sulfolenes is described. These fused‐3‐sulfolenes are demonstrated to be good precursors for the corresponding o‐quinodimethanes.