Geminal dialkylation, alkylative reduction and olefination of aliphatic aldehydes. Reaction of gem-bistriflates with higher order dialkylcyanocuprates.
作者:A.García Martínez、J.Osío Barcina、B.Ruiz Díez、L.R Subramanian
DOI:10.1016/s0040-4020(01)89331-5
日期:1994.1
gem-Dialkylation or alkylative reduction of α-unbranched aliphatic aldehydes 1 is advantageously achieved by reaction of the corresponding gem-bistriflates 2 with di-n-alkylcyanocuprates or di-sec- and di-tert-alkylcyanocuprates respectively. The reaction of α-branched gem-bistriflates 2 with dialkylcyanocuprates in the presence of boron trifluoride affords the olefins 6 in good yield.
宝石-Dialkylation或alkylative还原α-无支链的脂族醛的1有利地由相应的反应实现宝石-bistriflates 2与二Ñ -alkylcyanocuprates或二仲丁基-和二-叔分别-alkylcyanocuprates。在三氟化硼的存在下,α-支链的宝石-双三氟甲磺酸酯2与氰基二烷基氰酸酯的反应以良好的产率提供了烯烃6。