SINGLE STEP ENANTIOSELECTIVE PROCESS FOR THE PREPARATION OF 3-SUBSTITUTED CHIRAL PHTHALIDES
申请人:Council of Scientific & Industrial Research
公开号:US20140330027A1
公开(公告)日:2014-11-06
The present invention discloses single step, highly enantioselective catalytic oxidative cyclization process for the synthesis of 3-substituted chiral phthalides. In particular, the invention discloses asymmetric synthesis of chiral phthalides via synergetic nitrile accelerated oxidative cyclization of o-cyano substituted aryl alkenes in high yield and enantiomeric excess (ee) in short reaction time. Also, disclosed herein is “one-pot” asymmetric synthesis of biologically important natural compounds having 3-substituted chiral phthalide structural framework in the molecule.
[EN] CONDENSED IMIDAZOLYLIMIDAZOLES AS ANTIVIRAL COMPOUNDS<br/>[FR] IMIDAZOLYLIMIDAZOLES CONDENSÉS UTILISÉS COMME COMPOSÉS ANTIVIRAUX
申请人:GILEAD SCIENCES INC
公开号:WO2013075029A1
公开(公告)日:2013-05-23
The disclosure is related to anti-viral compounds, compositions containing such compounds, and therapeutic methods that include the administration of such compounds, as well as to processes and intermediates useful for preparing such compounds.
BASE MATERIAL HAVING A DYED SURFACE FILM AND DYEING METHOD
申请人:NIPPON KAYAKU KABUSHIKI KAISHA
公开号:EP0179921A1
公开(公告)日:1986-05-07
57 A base material having a dyed surface is obtained by applying to the surface of a base material photo-reactive resin composition (D) containing: (a) a copolymer (A) between a vinyl monomer having a photosensitive group and a copolymerizable vinyl monomer having a group with an affinity for an anionic dye; (b) a photo-reaction initiator (B) as an optional component; and (c) a solvent (C), to form a film, irradiating it with actinic light, and dyeing the film with an anionic dye. This material is useful as a color filter for a liquid crystal color television, etc.
A polymerizable composition comprising (A) a resin selected from the group consisting of a polyamide resin which is soluble or swells in water or aqueous alkali solutions and a polyester resin which is soluble or swells in water or aqueous alkali solutions, (B) an infrared absorber, (C) a radical polymerization initiator, and (D) a radical-polymerizable compound.
Improved Cs<sub>2</sub>CO<sub>3</sub>Promoted O-Alkylation of Acids
作者:Jay P. Parrish、Eric E. Dueno、Seok-In Kim、Kyung Woon Jung
DOI:10.1080/00397910008086893
日期:2000.8
Cesium carbonate mediated O-alkylation of carboxylic acids was efficiently carried out under mild in situ conditions to give the corresponding esters exclusively. Chiral templates including alpha-hydroxy and alpha-alkoxy acids were also converted to their corresponding esters with no observed racemization.