Construction of 5-Aminotetrazoles via in Situ Generation of Carbodiimidium Ions from Ketones Promoted by TMSN<sub>3</sub>/TfOH
作者:Phongprapan Nimnual、Jumreang Tummatorn、Bundet Boekfa、Charnsak Thongsornkleeb、Somsak Ruchirawat、Pawida Piyachat、Kunlayanee Punjajom
DOI:10.1021/acs.joc.9b00555
日期:2019.5.3
5-aminotetrazoles has been developed by employing simple ketones as substrates. This methodology involved the N2-extrusion/aryl migration of azido complexes as the key step for the in situ generation of carbodiimidium ion, which could further react with hydrazoic acid and cyclize intramolecularly to provide 5-aminotetrazoles in good to excellent yields. In addition, the regioselectivity of the reaction was studied
通过使用简单的酮作为底物,已经开发了用于合成5-氨基四唑的新颖的合成方法。该方法涉及叠氮基络合物的N 2-挤出/芳基迁移,这是原位生成碳二亚胺离子的关键步骤,该碳二亚胺离子可进一步与酸反应并分子内环化,从而以优异的产率获得5-氨基四唑。另外,通过密度泛函理论计算研究了反应的区域选择性并使其合理化。