Synthesis of Quaternary α-Fluorinated α-Amino Acid Derivatives via Coordinating Cu(II) Catalytic α-C(sp<sup>3</sup>)–H Direct Fluorination
作者:Qiang Wei、Yao Ma、Li Li、Qingfei Liu、Zijie Liu、Gang Liu
DOI:10.1021/acs.orglett.8b03044
日期:2018.11.16
been developed to prepare vital quaternary α-fluorinated α-amino acid derivatives. A Cu(II) catalytic SET oxidative addition mechanism is proposed, involving a key fluoride-coupled Cu(II) charge transfer complex. The protocol can tolerate a rich variety of α-amino acids, for which the auxiliary group is removed in high yield and substituted for the direct preparation of dipeptide derivatives with detachable
已经开发了一种配位的,铜催化的直接α-C(sp 3)-H氟化方法来制备重要的季铵化α-氟化α-氨基酸衍生物。提出了一种Cu(II)催化SET氧化加成机理,涉及一种关键的氟化物偶联的Cu(II)电荷转移配合物。该方案可以耐受多种α-氨基酸,为此,辅助基团可以高产率去除,并可以直接制备具有可分离的,单一的绝对绝对构型的目标化合物的二肽衍生物。