Thermal [3+2] Cycloaddition Reaction of N-Acyliminophenanthridinium Betaine with Allenoates: Facile Access to Phenanthridine-fused Tetracyclic Heterocycles
The thermal [3+2] cycloaddition reaction of N-acyliminophenanthridinium betaines with various allenoates has
been investigated. The reaction was operationally simple and proceeded smoothly under mild reaction conditions, providing
a variety of aromatic tetracyclic heterocycles in moderate to excellent yields.
TAMURA Y.; MIKI Y.; NISHIKAWA Y.; IKEDA M., J. HETEROCYCL. CHEM. <JHTC-AD>, 1976, 13, NO 2, 317-320
作者:TAMURA Y.、 MIKI Y.、 NISHIKAWA Y.、 IKEDA M.
DOI:——
日期:——
Tamura,Y. et al., Journal of the Chemical Society. Perkin transactions I, 1976, p. 1702 - 1705
作者:Tamura,Y. et al.
DOI:——
日期:——
Phosphine-Catalyzed [3+2] Cycloaddition Reactions of Azomethine Imines with Electron-Deficient Alkenes: A Facile Access to Dinitrogen-Fused Heterocycles
for the phosphine‐catalyzed [3+2] cycloadditionreaction of azomethineimines with diphenylsulfonyl alkenes to give dinitrogen‐fused bi‐ or tricyclic heterocyclic compounds in high yields has been described. Moreover, two phenylsulfonyl groups installed on the heterocyclic products could be conveniently removed or transformed to other functional groups, making the reaction more useful.