Iodine as a Mild, Efficient, and Cost-Effective Reagent for the Synthesis of <i>cis</i>-1-Oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxylic Acids
作者:J. Yadav、B. Reddy、A. Reddy、A. Narsaiah
DOI:10.1055/s-2007-983899
日期:2007.10
Arylimines generated in situ from aromatic aldehydes and anilines undergo smooth coupling with homophthalic anhydride in the presence of 10 mol% of molecular iodine under mild and neutral conditions to afford the corresponding cis-1-oxo-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acids in excellent yields with high cis selectivity. The use of iodine makes this procedure simple, convenient, and cost-effective.
由芳香醛和苯胺原位生成的芳基亚胺在 10 摩尔分子碘存在下,在温和中性条件下与均苯二甲酸酐发生顺利偶联,从而得到相应的顺式-1-氧代-1,2,3,4-四氢异喹啉-4-羧酸,产量极佳,顺式选择性高。碘的使用使这一过程变得简单、方便和具有成本效益。