Synthesis 2020; 52(02): 263-272
DOI: 10.1055/s-0039-1690729
paper
© Georg Thieme Verlag Stuttgart · New York

Pictet–Spengler Synthesis of Perfluoroalkylated Tetrahydro-γ-carbolines and Tetrahydropyrrolopyrazines

Natalia G. Voznesenskaia
,
Olga I. Shmatova
,
Valentine G. Nenajdenko
Moscow State University, Department of Chemistry, Leninskie Gory, Moscow 119992, Russian Federation   Email: nenajdenko@org.chem.msu.ru
› Author Affiliations
This study was funded by the Russian Foundation for Basic Research (18-33-00574mol_a and 17-53-45068).
Further Information

Publication History

Received: 06 June 2019

Accepted after revision: 05 October 2019

Publication Date:
28 October 2019 (online)


Abstract

A new method for the synthesis of perfluoroalkylated derivatives of γ-carboline and pyrrolopyrazine was elaborated. Pictet–Spengler reaction of isotryptamine and 2-(pyrrol-1-yl)ethanamine with trifluoromethylated carbonyls and 2-perfluoroalkyl-substituted five-, six-, and seven-membered cyclic imines was studied. It was found that this approach opens efficient access to a family of alkaloid-like compounds bearing a CF3 or C2F5 group in the structure. In the case of the iso-Pictet–Spengler reaction with 2-perfluoroalkyl-substituted cyclic imines, a series of γ-carbolines bearing an aminoalkyl group were prepared.

Supporting Information