Ha. Dondas et al., Sequential 1,3-dipolar cycloaddition-Pictet-Spengler reactions. A versatile tactical combination, TETRAHEDRON, 56(24), 2000, pp. 4063-4070
The combination of thermal or Ag(I) catalysed imine-->azomethine ylide-->cy
cloaddition cascades with a subsequent Pictet-Spengler reaction allows the
assembly of polyfunctional N-heterocycles, via formation of 4 bonds and 2 r
ings, in good yield. (C) 2000 Elsevier Science Ltd. All rights reserved.