Scheme 2.
Key steps of the proposed mechanism for the Fischer indolization: (a) N-arylhydrazone generation, (b) enamine formation, (c) [3,3]-sigmatropic rearrangement, (d) re-aromatization, (e) cyclization, (f) indole formation.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.