T. Didriksen et L. Skattebol, Preparation of diadducts from dienes and dihalocarbenes. A general sonochemical method?, SYN COMMUN, 29(7), 1999, pp. 1087-1095
Diadducts were formed in excellent yields from reactions of dienes with chl
oroform or bromoform, powdered sodium hydroxide and benzyltriethylammonium
chloride as catalyst using ultrasound.