Preparation of 7-ethoxy-3-hydroxy-6-methoxy-1-methyl-4-nitroisoquinoline
作者:Donald L. Barton、Arthur C. Fabian、Margaret M. Lam、Jeffrey T. Sterbenz
DOI:10.1002/jhet.5570320450
日期:1995.7
This paper reports the large scale preparation of 7-ethoxy-3-hydroxy-6-methoxy-1-methyl-4-nitroiso-quinoline (RWJ 19959,2) from an available starting material, 4-ethoxy-3-methoxyphenylacetic acid (9). Previously 2 was prepared via a perchlorate salt which was found to decompose exothermically.