The synthesis of aryl-substituted 1,4-dihydroquinolines can be
achieved using a [4+2] cycloaddition
between benzyne and various aryl-substituted 1-azadienes. The conditions
are tolerated by N-aryl-, alkyl-, tosyl-,
and tert-butoxycarbonyl-protected 1-azadienes.
A short synthesis of the fungal metabolite 3-O-methylviridicatin
is reported.
benzyne - dihydroquinolines - azadienes - cycloaddition - 3-O-methylviridicatin