SYNTHESIS OF CARBOXYLIC ESTERS USING FORMALDEHYDE DIMETHYL DITHIOACETAL S,S-DIOXIDE

Article abstract of DOI:10.1016/S0040-4039(01)93025-4

Formaldehyde dimethyl dithioacetal S,S-dioxide (1) reacted with an alkyl bromide or a 2-alkenyl bromide (8) under phase-transfer conditions using 50percent aq.NaOH to give an alkyl or 2-alkenyl derivative of 1, whereas, in the reaction with 8 in the presence of K2CO3-KI in HMPA, 1 formed a 1-alken-3-yl derivative.Transformation of these products into the corresponding carboxylic esters was also described.