Rh(III)-Catalyzed Imidoyl C–H Carbamylation and Cyclization to Bicyclic [1,3,5]Triazinones
作者:Danielle N. Confair、Nathaniel S. Greenwood、Brandon Q. Mercado、Jonathan A. Ellman
DOI:10.1021/acs.orglett.0c03393
日期:2020.11.20
[1,3,5]triazinones from a diverse array of imines coupled with ethyl (pivaloyloxy)carbamate is reported. The preparation of [5,6]- and [6,6]-bicyclic heterocycles substituted with aryl, alkyl, and alkoxy groups demonstrated a broad reaction scope. The efficiency of this approach was further enhanced with the development of a three-component variant featuring in situ imine formation. X-ray crystallographic
报道了从各种亚胺与(新戊酰氧基)氨基甲酸乙酯偶联的 Rh(III) 催化合成双环 [1,3,5] 三嗪酮。[5,6]-和[6,6]-被芳基、烷基和烷氧基取代的双环杂环的制备证明了广泛的反应范围。随着以原位亚胺形成为特征的三组分变体的开发,这种方法的效率得到进一步提高。通过亚胺酰基 C-H 活化形成的红环的 X 射线晶体学表征为所提出的机制提供了支持。