81926-27-4Relevant articles and documents
Synthesis of Dihydrobenzofurans from Phenolic Mannich Bases and their Quaternized Derivatives
Blade-Font, Artur,Rocabayera, Teodoro de Mas
, p. 841 - 848 (2007/10/02)
Reaction of dimethylsulphoxonium methylide with quaternized derivatives of phenolic Mannich bases, and in certain cases with the bases themselves, constitutes a useful synthesis of dihydrobenzofurans.On the other hand treatment of those same quaternized derivatives with diazomethane may be a useful alternative procedure for the preparation of coumarans with base-sensitive groups.