A novel and convenient synthesis of 5-aryl-4-bromo-3-carboxyisoxazoles: useful intermediates for the solid-phase synthesis of 4,5-diarylisoxazoles
作者:Jeffrey J. Letourneau、Christopher Riviello、Michael H.J. Ohlmeyer
DOI:10.1016/j.tetlet.2007.01.040
日期:2007.3
A novel synthesis of 5-aryl-4-bromo-3-carboxyisoxazoles employing a [3+2] cycloaddition of a nitrile N-oxide with 2-aryl-1-bromoalkynes as the key step is described. The utility of these 5-aryl-4-bromo-3-carboxyisoxazoles in the solid-phase synthesis of 4,5-diarylisoxazoles is demonstrated.
描述了一种新的5-芳基-4-溴-3-羧基异恶唑的合成方法,该方法利用腈基N-氧化物的[3 + 2]环加成与2-芳基-1-溴炔烃作为关键步骤。证明了这些5-芳基-4-溴-3-羧基异恶唑在4,5-二芳基异恶唑的固相合成中的实用性。