Treatment of <i>N,N</i>-Dibenzylamino Alcohols with Sulfonyl Chloride Leads to Rearranged β-Chloro Amines, Precursors to β-Amino Acids, and Not to Tetrahydroisoquinolines
作者:Klaus Weber、Stephan Kuklinski、Peter Gmeiner
DOI:10.1021/ol991402i
日期:2000.3.1
treatment with tosyl chlorides induced intramolecular Friedel-Crafts alkylation. Reexamination of the reactions in our laboratory clearly proved rearranged chloro amines instead of the initially assumed tetrahydoisoquinoline structures. The chloro amines investigated can be employed as highly useful intermediates for an EPC synthesis of beta-amino nitriles and beta-amino acids.
[反应:见正文]最近,据报道从N,N-二苄基保护的β-氨基醇开始意外地形成了3-取代的1,2,3,4-四氢异喹啉。作者声称用甲苯磺酰氯处理会引起分子内Friedel-Crafts烷基化。在我们实验室对反应的重新检查清楚地证明了重排的氯胺取代了最初假定的四氢异喹啉结构。所研究的氯胺可用作EPC合成β-氨基腈和β-氨基酸的高度有用的中间体。