作者:Rongjun He、Seiji Shirakawa、Keiji Maruoka
DOI:10.1021/ja906821y
日期:2009.11.25
development of enantioselective phase-transfer catalysis for preparing important natural products or physiologically active compounds is quite attractive and challenging in terms of environmental consciousness. Although quaternary ammonium salts as phase-transfer catalysts are believed to require base additives for phase-transfer reactions, we have discovered that even without any base additives, the enantioselective
就环境意识而言,开发用于制备重要天然产物或生理活性化合物的对映选择性相转移催化是相当有吸引力和具有挑战性的。尽管据信作为相转移催化剂的季铵盐需要碱添加剂进行相转移反应,但我们发现即使没有任何碱添加剂,3-苯基羟吲哚与β-硝基苯乙烯的对映选择性相转移共轭加成在在中性条件下,在富水溶剂中存在手性双官能溴化铵,具有高非对映选择性和对映选择性。