Abstract
A series of 5-unsubstituted and 5-substituted furfurylidenes have been prepared under thermal as well as non-thermal microwave and ultrasound irradiation methods from condensation of furfural and its derivatives with sonic methylene active compounds.. Further, other condensate products. from, these arylidenes, which contain halogen or sulpher atoms, were also prepared. Structural elucidation of the synthesized compounds was determined on the bass of various spectroscopic methods.