The dehydration products of 2-trichloromethyl–2-butanol are the 2-trichloro-methyl–1-and -2-butenes. The first of these easily rearranges to 1, 1-dichloro-2-chloro-methyl-1-butene, but the allyl rearrangement product from the other is highly reactive, and gives further transformation products under the conditions used for the rearrangement.
PPAR alpha activators, pharmaceutical compositions containing such compounds and the use of such compounds to elevate certain plasma lipid levels, including high density lipoprotein-cholesterol and to lower certain other plasma lipid levels, such as LDL-cholesterol and triglycerides and accordingly to treat diseases which are exacerbated by low levels of HDL cholesterol and/or high levels of LDL-cholesterol and triglycerides, such as atherosclerosis and cardiovascular diseases, in mammals, including humans.
Practical synthesis of 3,3-substituted dihydroquinoxalin-2-ones from aryl 1,2-diamines using the Bargellini reaction
作者:Thomas A. Alanine、Stephen Stokes、James S. Scott
DOI:10.1016/j.tetlet.2016.08.057
日期:2016.9
The reaction of aromatic 1,2-diamines with trichloromethylcarbinols under mild, basic phase-transfer conditions provided expedient access to 3,3-disubsituted quinoxalin-2(1H)-ones in good to moderate yields. The use of unsymmetrical aryl diamines gave a regioisomeric mixture of products with the ratio shown to be dependent on the electronic nature of the aromatic substituents. 2,3-Diaminopyridines
在温和的碱性相转移条件下,芳族1,2-二胺与三氯甲基甲醇的反应可方便地获得3,3-二取代的喹喔啉-2(1 H)-酮,收率良好。不对称芳基二胺的使用产生了产物的区域异构混合物,其比例显示出取决于芳族取代基的电子性质。也可以使用2,3-二氨基吡啶,其对二氢[3,2 - b ]吡啶并吡嗪-2-酮异构体表现出优异的选择性。
Weizmann; Sulzbacher; Bergmann, Journal of the American Chemical Society, 1948, vol. 70, p. 1157
作者:Weizmann、Sulzbacher、Bergmann
DOI:——
日期:——
Weizmann; Bergmann; Sulzbacher, Journal of the American Chemical Society, 1948, vol. 70, p. 1190