5,5′-Dimethyl-3,3′-azoisoxazole as a new heterogeneous azo reagent for esterification of phenols and selective esterification of benzylic alcohols under Mitsunobu conditions
作者:Nasser Iranpoor、Habib Firouzabadi、Dariush Khalili
DOI:10.1039/c004357e
日期:——
3′-azoisoxazole is used as a new efficient heterogeneous azo reagent for the highly selective esterification of primary and secondary benzylic alcohols and phenols with aliphatic and aromatic carboxylic acids via Mitsunobu protocols. The reaction is highly selective for primary benzylic alcohols versus secondary ones, aliphatic alcohols and also phenols. The isoxazole hydrazine byproduct can be simply isolated
5,5'-二甲基-3,3'-偶氮异恶唑通过Mitsunobu协议,它用作新型高效的异质偶氮试剂,用于伯和仲苄醇和酚与脂肪族和芳香族羧酸的高选择性酯化。该反应对伯苄醇与仲醇,脂族醇以及酚的选择性很高。这异恶唑肼 副产物可以简单地通过过滤分离,并循环到其中 偶氮异恶唑 通过氧化。