Phenylene and Isatin Based Bifunctional Mesoporous Organosilica Supported Schiff-Base/Manganese Complex: An Efficient and Recoverable Nanocatalyst

A novel bifunctional periodic mesoporous organosilica supported isatin-Schiff-base/manganese complex [BPMO@ISB/Mn(II)] is prepared, characterized and its catalytic performance is investigated in the synthesis of dihydropyrano[3,2-c]chromene derivatives. The BPMO@ISB was prepared via grafting of 3-aminopropyltrimethoxysilane (APTS) on a phenylene based PMO followed by treatment with isatin. The BPMO@ISB was then reacted with Mn(NO3)2·4H2O to...