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Synthesis 2006(19): 3231-3237
DOI: 10.1055/s-2006-950183
DOI: 10.1055/s-2006-950183
PAPER
© Georg Thieme Verlag Stuttgart · New York
One-Carbon Homologation of Aldehydes to N-(α-Haloacyl)benzotriazoles
Further Information
Received
27 April 2006
Publication Date:
15 August 2006 (online)
Publication History
Publication Date:
15 August 2006 (online)
Abstract
One-carbon homologated N-(α-haloacyl)benzotriazoles have been synthesized from the corresponding aromatic and aliphatic aldehydes. Vinylbenzotriazoles, prepared by the reaction of aldehydes with the one-carbon synthon BtCH2P+Ph3Cl-, were subsequently treated with Br2/Et3N to give 1-bromovinylbenzotriazoles. These were then treated with NBS/NIS in CH3CN-H2O to furnish one-carbon homologated N-(α-haloacyl)benzotriazoles in 53-77% yields. We have also demonstrated the utility of these new reagents in organic synthesis.
Key words
N-acylbenzotriazole - homologation - aldehyde - acylation - N-halosuccinimide
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