Hexachloroacetone as a Precursor for a Tetrachloro-substituted Oxyallyl Intermediate: [4+3] Cycloaddition to Cyclic 1,3-Dienes
作者:Baldur Föhlisch、Stefan Reiner
DOI:10.3390/90100001
日期:——
henyl diethyl phosphate (1), easily available by a Perkow reaction between hexachloroacetone and triethyl phosphite, reacts with sodium trifluoroethoxide/trifluoroethanol in the presence of cyclic 5-membered 1,3-dienes to furnish alpha,alpha,alpha',alpha'-tetrachloro-substituted[3.2.1]bicyclic ketones 2. A [4+3] cycloaddition of a tetrachloro-oxyallyl intermediate is postulated.
烯醇磷酸酯 2,2-二氯-1-(三氯甲基)乙烯基二乙基磷酸酯 (1) 可通过六氯丙酮和亚磷酸三乙酯之间的 Perkow 反应轻松获得,在环状 5 元 1,3 存在下与三氟乙醇钠/三氟乙醇反应-二烯以提供α,α,α',α'-四氯取代的[3.2.1]双环酮2.假设四氯-乙氧基烯丙基中间体的[4+3]环加成。