Oxidative Methylamination of Nitroquinolines
作者:
Marian Woźniak,
Maria Grzegożek,
期刊:
Liebigs Annalen der Chemie
(WILEY Available online 1993)
卷期:
Volume 1993,
issue 8
页码: 823-829
ISSN:0170-2041
年代: 1993
DOI:10.1002/jlac.1993199301130
出版商: WILEY‐VCH Verlag
关键词: Methylaminations;σ‐Adducts, methylamino;Calculations, FMO;Quinolines;Aminations
数据来源: WILEY
摘要:
Abstract3‐, 5‐, 6‐, 7‐ and 8‐nitroquinoline as well as 5,7‐ and 6,8‐dinitroquinoline are methylaminated with a liquid methylamine solution of potassium permanganate (LMA/PP) to the corresponding mono‐ and bis(methylamino)‐substituted compounds. 2‐Nitroquinoline is aminated with LMA/PP to 2‐(methylamino)quinoline. The intermediate methylamino σ‐adducts of 3‐nitro‐ and 5,7‐ and 6,8‐dinitroquinoline are detected by1H‐NMR spectroscopy. Quantum chemical calculations for the mononitroquinolines suggest that the experimentally observed regioselectivity of the methylamination is controlled by an interaction of frontal molecu
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