One-Pot Synthesis of New Fused 4,5-Bridged 1,2,5-Triazepine-3,6-diones, 1,2,5-Triazepine-3,7-diones Heterocycles by Petasis Reaction
作者:Subhasish Neogi、Amrita Roy、Dinabandhu Naskar
DOI:10.1021/cc900092x
日期:2010.1.11
The one pot synthesis of a new fused 1,2,5-triazepine-3,6-diones, 1,2,5-triazepine-3,7-diones heterocyles has been described via Petasis reactions. These heterocycles might be suitable for elaboration into larger peptides at amino termini. The scope and limitations of this method have been examined.
Petasis boronic acid–Mannich reactions of substituted hydrazines: synthesis of α-hydrazinocarboxylic acids
作者:David E. Portlock、Dinabandhu Naskar、Laura West、Min Li
DOI:10.1016/s0040-4039(02)01511-3
日期:2002.9
N-1-(Carbamate protected)-N-2-(alkyl or aryl substituted) hydrazines can serve as amine substrates for the Petasis boronic acid-Mannich reaction, providing a practical synthetic route for the preparation of alpha-hydrazinocarboxylic acids. The scope and limitations of this method have been examined. (C) 2002 Published by Elsevier Science Ltd.