Synthesis of functionalized acetophenones by [3+3] cyclizations of 1,3-bis-silyl enol ethers with 2-acetyl-3-silyloxyalk-2-en-1-ones
作者:Rüdiger Dede、Peter Langer
DOI:10.1016/j.tetlet.2004.10.104
日期:2004.12
The TiCl4 mediated cyclization of 1,3-bis-silyl enol ethers with 2-acetyl-1-silyloxybut-1-en-3-one and 3-acetyl-4-silyloxypent-3-en-2-one, readily prepared from 3-formyl(acetylacetone) and triacetylmethane, afforded a variety of functionalized acetophenones.
TiCl 4介导的1,3-双-甲
硅烷基烯醇醚与2-乙酰基-1-甲
硅烷氧基丁-1-烯-3-酮和3-乙酰基-4-甲
硅烷氧基
戊-3-烯-2-酮的环化反应很容易制备由3-甲酰基(
乙酰丙酮)和
三乙酰甲烷制得,提供了各种官能化的
苯乙酮。