作者:Satoshi Mizuta、Kanami Kitamura、Ayako Kitagawa、Tomoko Yamaguchi、Takeshi Ishikawa
DOI:10.1002/chem.202004769
日期:2021.4
Silver‐promoted C−F bond formation in α‐bromoamides by using AgF under mild conditions is reported. This simple method enables access to tertiary, secondary, and primary alkyl fluorides involving biomolecular scaffolds. This transformation is applicable to primary and secondary amides and shows broad functional‐group tolerance. Kinetics experiments revealed that the reaction rate increased in the order
据报道,在温和的条件下使用AgF可以在α-溴酰胺中形成银促进的CF键形成。这种简单的方法可以访问涉及生物分子支架的叔,仲和伯烷基氟化物。这种转变适用于伯酰胺和仲酰胺,并显示出广泛的官能团耐受性。动力学实验表明,反应速率按3°> 2°> 1°α-碳原子的顺序增加。另外,发现酸性酰胺质子在促进反应中起重要作用。机理研究表明,生成叠氮醌中间体,然后对其进行亲核加成以形成具有立体特异性(即保留构型)的CF键。Ag I合成位阻醇和醚也得到了证明。给出了α-溴酰胺与O亲核试剂反应的例子。