A Highly Reactive Dicationic Iridium(III) Catalyst for the Polarized Nazarov Cyclization Reaction
作者:Tulaza Vaidya、Abdurrahman C. Atesin、Ildiko R. Herrick、Alison J. Frontier、Richard Eisenberg
DOI:10.1002/anie.201000100
日期:2010.4.26
Pushing the Nazarov envelope: An electrophilic complex (1; see scheme; EDG=electron‐donating group, EWG=electron‐withdrawing group, binap=2,2‐bis(diphenylphosphanyl)‐1,1‐binaphthyl) exhibits unusual catalytic activity in the polarized Nazarov cyclization reaction. Aryl vinyl ketones that show poor reactivity with well‐known catalysts can be readily cyclized with 1/AgSbF6 (1:1) under mild reaction conditions
推动 Nazarov 信封:亲电复合物(1;见方案;EDG=供电子基团,EWG=吸电子基团,binap=2,2-双(二苯基膦酰基)-1,1-联萘基)在极化的纳扎罗夫环化反应。在温和的反应条件下,与众所周知的催化剂反应性较差的芳基乙烯基酮可以很容易地与1 /AgSbF 6 (1:1)环化,同时发生 AgBr 沉淀。