A Nonmetal Approach to α-Heterofunctionalized Carbonyl Derivatives by Formal Reductive XH Insertion
作者:Eric J. Miller、Wei Zhao、Jonathan D. Herr、Alexander T. Radosevich
DOI:10.1002/anie.201205604
日期:2012.10.15
Keeping it organic: A direct synthesis of α‐alkoxy and α‐amino ester derivatives by direct reductive coupling of widely available, stable α‐keto esters and protic pronucleophiles is described (see scheme; X=OR, NR2). The method serves as a convenient nonmetal alternative to XHinsertion by diazo decomposition.
使其保持有机状态:已描述了通过广泛可得的,稳定的α-酮酸酯和质子性亲核试剂的直接还原偶联直接合成α-烷氧基和α-氨基酯衍生物的方法(参见方案; X = OR,NR 2)。该方法可作为重氮分解中XH插入的便捷非金属替代方法。
Photochemical O–H Functionalization of Aryldiazoacetates with Phenols via Proton Transfer
作者:Claire Empel、Sripati Jana、Chao Pei、Thanh Vinh Nguyen、Rene M. Koenigs
DOI:10.1021/acs.orglett.0c02564
日期:2020.9.18
In this work, we report a thorough investigation of the reaction of phenols with aryldiazoacetates. Mechanistic studies using different spectroscopic methods and theoretical calculations suggest a hydrogen bond between phenol and aryldiazoacetates, which can be modulated by the phenol acidity. The pK(A) of phenol and therefore the hydrogen bond plays an important role in a subsequent photoinduced proton transfer reaction to give the formal O-H functionalization product of phenols.