Synthesis of 1,2-dihydroisoquinolines via palladium(0)-catalyzed addition–cyclization of chloroform to ortho-alkynylaldimines
摘要:
Addition-cyclization of chloroform to ortho-alkynylaldimines proceeded in the presence of PdCl(2)(PPh(3))(2)/dppe or Pd(2)dba(3)center dot CHCl(3)/ dppe at 100 degrees C to afford the corresponding 1-(trichloromethyl)-1,2-dihydi-oisoquinolines in good to high yields. (c) 2008 Elsevier Ltd. All rights reserved.