Nitrile Oxide Cycloaddition Chemistry Using Benzotriazole as a Steric Auxiliary
作者:G. Paul Savage、Gregory T. Wernert
DOI:10.1071/ch05189
日期:——
The relatively hindered 2,2-bis(benzotriazol-1-yl)acetonitrile oxide was prepared in situ from the precursor hydroximinoyl chloride, and was allowed to react with dipolarophiles to give rise to several isoxazoles. The benzotriazole substituents acted as steric auxiliaries to prevent unwanted dimerization of the nitrileoxide to the furoxan by-product.