CYCLOADDITION REACTIONS OF 3,4-DIHYDRO-2H-PYRAN WITH BENZYLIDENEANILINES

Article abstract of DOI:10.1016/0040-4039(88)85299-7

The cycloaddition of dihydropyran to benzylideneaniline and to other anils gives tetrahydroquinolines resulting from <4 + 2> addition; contrary to a recent report, there is no evidence for the formation of <2 + 2> adducts.