Reduction of 4H-chromen-4-ylidene amines: synthesis of 2-[(1-aminoalkyl)-3-aryl-2-propenyl] phenols

A procedure for the reduction of 4H-chromen-4-ylidene amines 1 is described, which affords to 2-[(1-aminoalkyl)-3-aryl-2-propenyl] phenols 2, previously unknown in literature. The efficacy of the procedure is compared with alternative synthetic routes.