Vinyl azides in heterocyclic synthesis. Part 6. Synthesis of isoquinolines by intramolecular aza-Wittig reaction
作者:Deirdre M. B. Hickey、A. Roderick MacKenzie、Christopher J. Moody、Charles W. Rees
DOI:10.1039/p19870000921
日期:——
Azidocinnamates containing ortho-carbonyl substituents are versatile intermediates for heterocyclic synthesis. Isoquinolines (8) and (9) are formed under mild neutral conditions by intramolecularaza-Wittigreactions of iminophosphoranes, readily derived from azides (1) and (2), respectively, with triethyl phosphite. The azafluoranthene (10) can also be prepared from the azide (3)via the isolable iminophosphoranes