β-Hydroxysulfoxides as chiral cyclic ketone equivalents: enantioselective synthesis of polysubstituted cyclohexanones, cyclohexenones and cyclohexenediones
作者:M. Carmen Carreño、Manuel Pérez-González、María Ribagorda、Álvaro Somoza、Antonio Urbano
DOI:10.1039/b209121f
日期:——
The β-hydroxysulfoxide moiety, after oxidation to sulfone, acts as a masked carbonyl group in a cyclic system, opening an easy access to differently substituted enantiomerically pure cyclic ketones by means of aluminium-mediated conjugate additions, stereoselective reductions and elimination by retrocondensation in basic medium.
β-羟基亚砜部分,氧化成砜后,在循环系统中充当掩蔽的羰基,通过铝介导的共轭加成、立体选择性还原和在碱性条件下通过逆缩合消除,可以轻松获得不同取代的对映体纯环酮。中等的。