The selective O-acylation of enolates providing a simple entry to O-enesters
作者:Dominique Limat、Manfred Schlosser
DOI:10.1016/0040-4020(95)00250-c
日期:1995.5
In the presence of catalytic amounts of a fluoride source, O-trimethylsilyl enethers undergo condensation with acyl fluorides to afford O-enesters with high yields. The intermediates and final products are pure (Z) isomers if only one double bound is in conjugation with the oxygen atom whereas (E) isomers prevail if silyl dienethers or trienethers and O-dienesters or O-trienesters are formed.
N- versus O-Arylation of Aminoalcohols: Orthogonal Selectivity in Copper-Based Catalysts
作者:Alexandr Shafir、Phillip A. Lichtor、Stephen L. Buchwald
DOI:10.1021/ja068926f
日期:2007.3.1
Two complementary protocols for copper-catalyzed arylation of aminoalcohols were developed. Selective N-arylation was accomplished at room temperature using 2-isobutyrylcyclohexanone (a beta-diketone) as supporting ligand, while selective O-arylation required the use of 3,4,7,8-tetramethylphenanthroline at 80-110 degrees C. Systematic examination of the reaction scope revealed that high levels of selectivity are achieved for a variety of substrates, provided that nonchelating (or weakly chelating) aminoalcohols are used. The generality of the method was highlighted by the synthesis, in a pairwise fashion, of a number of functionalized N- and O-arylated aminoalcohols.
COMPOUNDS USEFUL AS MODULATORS OF TRPM8
申请人:Senomyx, Inc.
公开号:EP2958897A2
公开(公告)日:2015-12-30
[EN] COMPOUNDS USEFUL AS MODULATORS OF TRPM8<br/>[FR] COMPOSÉS UTILES COMME MODULATEURS DE TRPM8
申请人:SENOMYX INC
公开号:WO2014130582A2
公开(公告)日:2014-08-28
The present invention includes compounds useful as modulators of TRPM8, such as compounds of Formulae (Ia), (Ib) and (Ic), and the subgenus and species thereof; personal products containing those compounds; and the use of those compounds and the personal products, particularly the use of increasing or inducing chemesthetic sensations, such as cooling or cold sensations.