作者:Stephen W. Wright
DOI:10.1002/jhet.799
日期:2012.3
Procedures are reported to prepare the tert‐butyl esters of 2‐aminonicotinic acid, 4‐aminonicotinic acid, 5‐aminonicotinic acid, and 6‐aminonicotinic acid from 2‐chloronicotinic acid, 4‐chloronicotinic acid, 5‐bromonicotinic acid, and 6‐chloronicotinic acid, respectively, without need for purification of intermediates. J. Heterocyclic Chem., (2012).
据报道,该方法是从2-氯烟酸,4-氯烟酸,5-溴烟碱酸和6-烟酰胺酸制备2-氨基烟酸,4-氨基烟酸,5-氨基烟酸和6-氨基烟酸的叔丁酯。氯烟酸分别无需纯化中间体。J.杂环化学。(2012)。