One-Pot Syntheses of Substituted Oxazoles and Imidazoles from the Isocyanide Asmic
作者:Louis G. Mueller、Taylor M. Keller、Fraser F. Fleming
DOI:10.1021/acs.joc.2c02290
日期:2023.1.20
Substituted oxazoles and imidazoles are synthesized in one pot from the isocyanide building block Asmic (anisylsulfanylmethyl isocyanide), an alkyl halide, and an acid chloride or nitrile, respectively. The modular assembly employs sequential deprotonation–alkylation and deprotonation–acylation or imination of Asmic, followed by an unusual carbon–sulfur bond cleavage to construct the azole. The strategy
取代的恶唑和咪唑分别由异氰化物结构单元 Asmic(茴硫基甲基异氰化物)、卤代烷和酰氯或腈在一个锅中合成。模块化组装采用 Asmic 的连续去质子化-烷基化和去质子化-酰化或亚胺化,然后是不寻常的碳-硫键裂解来构建唑。该策略稳健、高效,并在一次操作中提供 C4-C5 双取代恶唑或咪唑