Rhodium(II)-Catalyzed Formal [3 + 2] Cycloaddition of <i>N</i>-Sulfonyl-1,2,3-triazoles with Isoxazoles: Entry to Polysubstituted 3-Aminopyrroles
作者:Xiaoqiang Lei、Longbo Li、Yu-Peng He、Yefeng Tang
DOI:10.1021/acs.orglett.5b02570
日期:2015.11.6
A novel rhodium(II)-catalyzed formal [3 + 2] cycloaddition of N-sulfonyl-1,2,3-triazoles with isoxazoles has been achieved that provides an efficient method for the synthesis of polysubstituted 3-aminopyrrole derivatives. An operationally simple one-pot synthesis of the titled compounds from terminal alkynes, tosyl azide, and isoxazoles was also developed. The presented reaction affords an illustrative
N-磺酰基-1,2,3-三唑与异恶唑的新型铑(II)催化的正式[3 + 2]环加成反应已为合成多取代的3-氨基吡咯衍生物提供了一种有效的方法。还开发了一种操作简单的一锅式合成方法,可从末端炔烃,甲苯磺酰基叠氮化物和异恶唑合成标题化合物。提出的反应提供了在相关的环加成反应中使用1,2,3-三唑作为[2C]-组分的说明性实例。