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Selective catalytic addition of hydrogen halide and carboxylic acids and phenols to methyl esters of 1-alkyl-3-cyclopropenecarboxylic acids

✍ Scribed by E. A. Shapiro; M. N. Protopopova; O. M. Nefedov

Book ID: 112442669
Publisher: Springer
Year: 1984
Tongue: English
Weight: 78 KB
Volume: 33
Category: Article
ISSN: 1573-9171
DOI: 10.1007/bf00948662

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## Abstract Aldol reaction of 7‐chloro‐1,3‐dihydro‐1‐methyl‐5‐phenyl‐2__H__‐1,4‐benzodiazepin‐2‐one (**1**) with 4‐substituted __α__‐methylcinnamaldehydes **2**–**5** afforded a mixture of __threo__‐ and __erythro__‐3‐(3‐aryl‐1‐hydroxy‐2‐methylprop‐2‐enyl)‐7‐chloro‐1,3‐dihydro‐1‐methyl‐5‐phenyl‐2__