2244-- 135- Method for Producing 2244-Tetra-Substituted 135-Cyclohexanetriones

摘要

The invention relates to a process for the preparation of a compound of formula I wherein cyclobutane-1,3-dione of formula II is reacted with an O or N nucleophile and a silylating agent followed by acylation and cyclization to give 2,2,4,4-tetra-substituted 1,3,5-cyclohexanetrione. /RTI ;/RTI ;/RTI