The catalytic asymmetric methylation of fluoroalkylated pyruvates is shown with dimethylzinc as a methylating reagent in the presence of a copper catalyst bearing a chiral phosphine ligand. This is the first catalytic asymmetric methylation to synthesize various α-fluoroalkylated tertiary alcohols with CF3, CF2H, CF2Br, and n-C n F2n+1 (n = 2, 3, 8) groups in good-to-high yields and enantioselectivities
在带有手性膦配体的铜催化剂存在下,用二甲基锌作为甲基化试剂显示了氟代烷基化丙酮酸的催化不对称甲基化。这是第一个催化不对称甲基化反应,以高至高收率和对映选择性合成具有CF3,CF2H,CF2Br和nC n F2n + 1(n = 2、3、8)基团的各种α-氟烷基化叔醇。手性膦配体的磷原子上的轴向骨架和取代基严重影响对映选择性。此外,发现仅通过手性膦而不使用铜可以促进简单的全氟烷基化的酮的甲基化。
[EN] HYDROXY AND (HALO)ALKOXY SUBSTITUTED TETRAHYDROFURANS AS MODULATORS OF SODIUM CHANNELS<br/>[FR] TÉTRAHYDROFURANES À SUBSTITUTION HYDROXY ET (HALO)ALKOXY UTILES EN TANT QUE MODULATEURS DE CANAUX SODIQUES
申请人:VERTEX PHARMA
公开号:WO2022256842A1
公开(公告)日:2022-12-08
Compounds of formula I and pharmaceutically acceptable salts thereof, useful as inhibitors of sodium channels are provided. Also provided are pharmaceutical compositions comprising the compounds or pharmaceutically acceptable salts and methods of using the compounds, pharmaceutically acceptable salts, and pharmaceutical compositions in the treatment of various disorders, including pain.
OXAZINE DERIVATIVES AND THEIR USE IN THE TREATMENT OF NEUROLOGICAL DISORDERS
申请人:BADIGER Sangamesh
公开号:US20110021520A1
公开(公告)日:2011-01-27
The invention relates to novel heterocyclic compounds of the formula
in which all of the variables are as defined in the specification, in free form or in salt form, to their preparation, to their medical use and to medicaments comprising them.
Synthesis of Optically Pure 2-Trifluoromethyl Lactic Acid by Asymmetric Hydroformylation
作者:Xiao Wang、Stephen L. Buchwald
DOI:10.1021/jo400115r
日期:2013.4.5
ligated by the P-chirogenic ligands QuinoxP* and DuanPhos, 3,3,3-trifluoroprop-1-en-2-yl acetate could be hydroformylated and subsequently oxidized to yield enantiomerically pure 2-trifluoromethyllactic acid.