New methodology for the preparation of pyrrole and indole derivatives via iminophosphoranes: synthesis of pyrrolo [1, 2-a] quinoxalines, indolo [3, 2-c] quinolines and …
P Molina, M Alajarin, A Vidal - Tetrahedron, 1990 - Elsevier
The aza-Wittig reaction of iminophosphorane N-[o-(triphenylphosphoranylidene) amino]-
phenyl pyrrole 4 with heterocumulenes leads to functionalized pyrrolo [l, 2-a] quinoxalines.
Iminophosphorane 19, derived from 2-(o-amino) phenyl indole, reacts under mild conditions
with isocyanates to form 21 which are converted into 5-amino-11H-indolo [3, 2-c] quinolines
22. Iminophosphorane 19 also reacts with carbon dioxide and carbon disulfide to give
indolo [3, 2-c] quinolines 23. Iminophosphorane 28. derived from 2-fo-azido)-phenyl-3 …
phenyl pyrrole 4 with heterocumulenes leads to functionalized pyrrolo [l, 2-a] quinoxalines.
Iminophosphorane 19, derived from 2-(o-amino) phenyl indole, reacts under mild conditions
with isocyanates to form 21 which are converted into 5-amino-11H-indolo [3, 2-c] quinolines
22. Iminophosphorane 19 also reacts with carbon dioxide and carbon disulfide to give
indolo [3, 2-c] quinolines 23. Iminophosphorane 28. derived from 2-fo-azido)-phenyl-3 …
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