A process for the production of (1R,Cis)-4-acetyl-6, 6-dimethyl-3-oxabicyclo-(3.1.0.)-hex-2-one of the formula: ##STR1## which involves reacting (1R,Cis)-4,7,7-trimethyl-3-oxabicyclo-(4.1.0.)-hept-4-en-2-one of the formula: ##STR2## with bromine at a temperature of from 0.degree. C. to 25.degree. C. and treating the brominated reaction mixture at ambient temperature with water, an aqueous solvent solution or an aqueous base solution.
一种制备(1R,Cis)-4-乙酰基-6,6-二甲基-3-氧杂双环(3.1.0)-己-2-酮的方法,其包括将式为(1R,Cis)-4,7,7-三甲基-3-氧杂双环(4.1.0)-庚-4-烯-2-酮的化合物与
溴在0℃至25℃的温度下反应,并在常温下将
溴化反应混合物用
水,
水溶剂溶液或
水碱溶液处理。