作者:Laura Castoldi、Laura Ielo、Wolfgang Holzer、Gerald Giester、Alexander Roller、Vittorio Pace
DOI:10.1021/acs.joc.7b03134
日期:2018.4.20
can be further exploited in analogous acylation-type processes on secondary arylamino diazoketones. In depth spectroscopic (1H, 13C, and 15N NMR ) and crystallographic analyses document interesting structural features of these previously unknown diazo derivatives.
通过Arndt-Eistert化学方法生成的伯和仲α-卤代甲基二氮杂酮,重氮甲烷的负载量最小,在氧化钙存在下有效地烷基化芳族胺,从而在完全化学控制下提供相应的α-芳基氨基二氮杂酮。这种简单的无机酸清除剂可完全中和亲核置换过程中形成的氢卤酸,否则氢卤酸会立即反应生成相应的α-卤代酮。该方法可在仲芳基氨基重氮酮的类似酰化型方法中进一步开发。在深度光谱法(1 H,13 C和15 N NMR)和晶体学分析中记录了这些先前未知的重氮衍生物的有趣结构特征。
US4614521A
申请人:——
公开号:US4614521A
公开(公告)日:1986-09-30
Chemoselective Synthesis of<i>N</i>-Substituted α-Amino-α′-chloro Ketones<i>via</i>Chloromethylation of Glycine-Derived Weinreb Amides
作者:Vittorio Pace、Wolfgang Holzer、Guido Verniest、Andrés R. Alcántara、Norbert De Kimpe
DOI:10.1002/adsc.201201043
日期:2013.3.25
Functionalized α‐arylamino‐α′‐chloro ketones are obtained in high yield via a straightforward homologation reaction of Weinrebamides derived from N‐arylglycines using in situ generated chloromethyllithium. The use of the Weinrebamides is essential and allows the chemoselective homologation of N‐aryl‐N‐substituted glycine analogues, a transformation which is not possible using similar glycine esters. The