High Chemo-/Stereoselectivity for Synthesis of Polysubstituted Monofluorinated Pyrimidyl Enol Ether Derivatives
作者:Lei Kang、Fang Wang、Jinlong Zhang、Huameng Yang、Chungu Xia、Jinlong Qian、Gaoxi Jiang
DOI:10.1021/acs.orglett.1c00092
日期:2021.3.5
A novel intramolecular Smiles rearrangement of α-fluoro-β-keto-pyrimidylsulfones (usually used as a carbon nucleophile) was developed, providing a versatile avenue for synthesis of tri/tetra-substituted monofluorinated pyrimidyl enol ethers. Among these, diverse (Z)-monofluorovinylsulfones and sulfinates were efficiently assembled by adding extra electrophile and fine-tuning reaction conditions. The
开发了新型的α-氟-β-酮-嘧啶基砜的分子内Smiles重排(通常用作碳亲核试剂),为合成三/四取代的单氟嘧啶基烯醇醚提供了多方面的途径。其中,通过添加额外的亲电试剂和微调反应条件,可以有效地组装各种(Z)-单氟乙烯基砜和亚磺酸盐。从烯醇氧阴离子到嘧啶2-碳的酮-烯醇互变异构现象触发了这一过程,这与经典的碳亲核加成反应方法完全不同。