Aminotetrazole Synthesis from Secondary Amides by C–C Bond Nitrogenation
作者:Ning Jiao、Cheng Zhang、Jianzhong Liu、Zengrui Cheng、Junhua Li、Song Song
DOI:10.1055/a-2006-4548
日期:——
The development of novel methods for the preparation of aminotetrazoles is of long-standing interest to chemists due to the great importance of these compounds in chemistry and biology. Here, we report an efficient method for the preparation of aminotetrazoles fromsecondaryamides by selective C–C bond cleavage. Compared with the conventional laborious and cumbersome approaches to aminotetrazoles
<i>o</i>-Iodoxybenzoic Acid Mediated Oxidative Desulfurization Initiated Domino Reactions for Synthesis of Azoles
作者:Pramod S. Chaudhari、Sagar P. Pathare、Krishnacharaya G. Akamanchi
DOI:10.1021/jo2025509
日期:2012.4.20
A systematic exploration of thiophilic ability of o-iodoxybenzoic acid (IBX) for oxidative desulfurization to trigger domino reactions leading to new methodologies for synthesis of different azoles is described. A variety of highly substituted oxadiazoles, thiadiazoles, triazoles, and tetrazoles have been successfully synthesized in good to excellent yields, starting from readily accessible thiosemicarbazides, bis-diarylthiourea, 1,3-disubtituted thiourea, and thioamides.