Parsekar, S.B.; Amonkar, C.P.; Parameswaran, P.S.; Tilve, S.G.
(Synthetic Communications. 40(21); 2010; 3251-3258.)
A convenient general synthesis of 2,2-dimethyl-3,4-dihydro-2H-pyrano[2,3-b]quinolines using the Wittig reaction is described.The o-nitrobenzaldehydes (1a-d) on reaction with phosphorane 2 provided (E)-ethyl-alpha-(2,2-di ...