Abstract
A photoinduced strategy for the synthesis of a variety of 3,4-dihydroisocoumarins has been realized. The reactions proceeded from ortho-iodobenzoic acids and alkenes through a photodehalogenative lactonization with NaHCO3 as the only additive in dimethyl sulfoxide (DMSO) to provide the desired products in moderate to good yields. This method offers a simple, mild, and environmentally friendly route to 3,4-dihydroisocoumarin derivatives.
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