Allylation of N-Benzoylhydrazones (=N′-Alkylidene-Substituted Benzohydrazides) by Treatment with Allyl Bromide in the Presence of Zinc in Aqueous Ammonium Chloride Solution

✍ Scribed by Biswanath Das; Digambar Balaji Shinde; Boddu Shashi Kanth; Jayprakash Narayan Kumar

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: German
• Weight: 127 KB
• Volume: 94
• Category: Article
• ISSN: 0018-019X
• DOI: 10.1002/hlca.201100006

✦ Synopsis

Abstract

N‐Benzoylhydrazones (=N′‐alkylidene‐substituted benzohydrazides) 1 are allylated efficiently by reaction with allyl bromide (2) in the presence of Zn in aqueous NH~4~Cl solution. The products 3 are formed in excellent yields (85–94%) within 35–50 min (Scheme, Table).