involved electrophilicsubstitution of hydrogen atoms in position 5 or 3 of the furan ring. The alkylation reaction and bromination with DDB occur via ipso-substitution of the trialkylgermyl group. Dichlorocarbene generated by phase-transfer catalysis adds to the 2-germyl-substituted furan at the C4C5 bond in the ring. Some of the above reactions were conducted with trimethyl(2-furyl)silane and 2-(t-butyl)furan