1,1-Dimethoxy-2-methyl-2-acetoxy-but-3-ene → 4,4-Dimethoxy-3-methyl-crotyl acetate

Participants

Reaction Conditions

Reaction Steps

564 g of 1,1-dimethoxy-2-methyl-2-acetoxy-but-3-ene and 0.3 g of copper (I) chloride were heated, with stirring, at 160° C. in a reaction vessel equipped with a stirrer, an internal thermometer and a descending condenser. Over the entire reaction time of 5 hours, a stream of nitrogen (90 liters/hour) was passed continuously through the reaction vessel. Subsequent working up of the reaction mixture by distillation gave 462 parts of 4,4-dimethoxy-3-methyl-crotyl acetate, corresponding to a yield of 81.9% of theory.

Provenance & Evidence