LEDNICER D.; VOIGTLANDER P. F. V.; EMMERT D. E., J. MED. CHEM., 1981, 24, NO 3, 341-346
作者:LEDNICER D.、 VOIGTLANDER P. F. V.、 EMMERT D. E.
DOI:——
日期:——
4-Aryl-4-aminocyclohexanones and their derivatives, a novel class of analgesics. 3. m-Hydroxyphenyl derivatives
作者:Daniel Lednicer、Philip F. Von Voigtlander、D. Edward Emmert
DOI:10.1021/jm00135a019
日期:1981.3
reaction the displacement of cyanide from the alpha-aminonitrile of 1,4-cyclohexanedione ketal, with the THP ether of m-hydroxyphenylmagnesium bromide. A number of the products show narcotic antagonist activity. Amino alcohols obtained on reaction of the free ketones with phenethyl Grignard reagents are potent analgetics, though devoid of antagonist activity. Systematic variation of the substituent on nitrogen
Rapid Cyclic Acetal and Cyclic Ketal Synthesis Assisted by a Rotary Evaporator
作者:Fuyao Jiang、Yinzhe Chen、Qian Zhang、Weiding Wang
DOI:10.1055/a-2293-3243
日期:——
Herein, we present a rapid and efficient method for synthesizing cyclicacetals and ketals utilizing a rotary evaporator. Unlike the conventional Dean–Stark dehydration process, which typically demands extended reaction times and copious amounts of organic solvents, our approach affords the synthesis of cyclicacetals and ketals with varying ring sizes in 30 min while using minimal quantities of dimethyl