作者:Thi My Uyen Ton、Fanny Himawan、Joyce Wei Wei Chang、Philip Wai Hong Chan
DOI:10.1002/chem.201201219
日期:2012.9.17
A method to prepare α,α‐acyl amino acid derivatives efficiently by Cu(OTf)2+1,10‐phenanthroline (1,10‐phen)‐catalyzed amination of 1,3‐dicarbonyl compounds with PhINSO2Ar is described. The mechanism is thought to initially involve aziridination of the enolic form of the substrate, formed in situ through coordination to the Lewis acidic metal catalyst, by the putative copper–nitrene/imido species generated
的方法制备α,α -酰基氨基酸衍生物有效地由铜(OTF)2 + 1,10-菲咯啉(1,10-phen)的与PhINSO1,3-二羰基化合物催化的胺化2 Ar是描述。据认为,该机理最初涉及基质的烯化形式的叠氮化,该基质是通过与路易斯酸性金属催化剂配位而通过金属催化剂与亚氨基碘烷源反应生成的假定的铜-氮化物/亚胺基团进行配位形成的。随后在路易斯酸性条件下,随后的叠氮茚醇加合物开环,得到α-胺化产物。该方法的效用以3-苯乙烯基-2-苯甲酰基-L-丙氨酸的前体的对映选择性合成为例。