作者:Wolfgang Oppolzer、Sidney C. Burford、Fabrizio Marazza
DOI:10.1002/hlca.19800630302
日期:1980.4.23
(17) by reaction with chlorotrimethylsilane (Scheme 5). Deprotonation of 17 and subsequent electrophilic attack furnished the regioisomeric products 12 and/or 13 in good yields (Schemes 5 and 6). The utility of the reaction 1812 for the convergent assembly of the 1-silyl-1,3-butadiene unit with an olefinic dienophile is further illustrated by the smooth intramolecular Diels-Alder reaction 1920.
通过与氯代三甲基硅烷反应,将戊二烯基锂(16)区域选择性且有效地转化为1-三甲基甲硅烷基-2,4-戊二烯(17)(方案5)。17的去质子化和随后的亲电子攻击使区域异构产物12和/或13以良好的产率提供(方案5和6)。通过光滑的分子内Diels-Alder反应19 20进一步说明了反应18 12用于1-甲硅烷基1,3-丁二烯单元与烯烃二烯亲和体的汇聚组装的效用。