Divergent Synthesis of α-Fluorinated Carbonyl and Carboxyl Derivatives by Double Electrophilic Activation of Amides
作者:Amaury Dubart、Gwilherm Evano
DOI:10.1021/acs.orglett.1c03450
日期:2021.11.19
entry to α-fluorinated carbonyl and carboxyl derivatives is reported. Upon activation of amides with triflic anhydride and a 2-halo-pyridine and subsequent trapping of the resulting keteniminium ions with nucleophiles followed by a second electrophilic activation with NFSI and final hydrolysis, a range of amides can be transformed to α-fluorinated ketones, esters, and amides under mild conditions. Moreover
报道了对 α-氟化羰基和羧基衍生物的直接和不同的进入。用三氟甲磺酸酐和 2-卤代吡啶活化酰胺,随后用亲核试剂捕获所得的烯酮亚胺离子,然后用 NFSI 进行第二次亲电活化并最终水解,一系列酰胺可以转化为 α-氟化酮、酯和酰胺在温和条件下。此外,可以进行该反应以产生具有无痕手性助剂的对映体富集的产物。