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Intramolecular cyclization of 4‐acetyl‐2,2‐diethoxycarbonyl‐2,3‐dihydro‐1‐(2‐nitrobenzoyl)pyrrole by catalytic reduction
Author(s) -
De Caprariis P.,
De Martino G.,
Abignente E.,
Sacchi A.
Publication year - 1990
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570270341
Subject(s) - chemistry , pyrrole , intramolecular force , quinazoline , catalysis , catalytic hydrogenation , medicinal chemistry , dehydration , derivative (finance) , selective catalytic reduction , stereochemistry , organic chemistry , biochemistry , financial economics , economics
Catalytic hydrogenation of 4‐acetyl‐2,2‐dicthoxycarbonyl‐2,3‐dihydro‐1‐(2‐nitrobenzoyl)pyrrole 2 afforded 3‐acetyl‐1,1‐diethoxycarbonyl‐1,2,3,3a,4,9‐hexahydro‐9‐oxopyrrolo[2,1‐ b ]quinazoline 3 and the 4‐hydroxy derivative 4 , together with two tetrahydro analogs 5 and 6 of 3 . Compounds 5 and 6 were also obtained by dehydration of 4 .

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