Copper catalyzed chlorine transfer cyclizations of glycine and glycolic acid derivatives
作者:Jan H. Udding、Henk Hiemstra、Marco N.A. van Zanden、W.Nico Speckamp
DOI:10.1016/0040-4039(91)80706-c
日期:1991.6
Chloroglycine and chloroglycolic acid derivatives smoothly cyclize in the presence of a catalytic amount of cuprous chloride and 2,2′-bipyridine to produce functionalized proline and 2-tetrahydrofurancarboxylic esters, respectively, in an atom transfer process.
在催化量的
氯化亚铜和
2,2'-联吡啶的存在下,
氯甘
氨酸和
氯乙醇酸衍
生物可在原子转移过程中平稳环化,分别生成官能化的脯
氨酸酯和2-
四氢呋喃羧酸酯。