Commercially available liquid enol ethers and acetates as gaseous alkyne equivalents in cationic Rh(I)/BINAP-catalyzed chemo- and regioselective formal cross-alkyne cyclotrimerizations
作者:Hiromi Hara、Masao Hirano、Ken Tanaka
DOI:10.1016/j.tet.2009.02.047
日期:2009.6
A cationicrhodium(I)/BINAPcomplex catalyzes partial intramolecular [2+2+2] cycloadditions of 1,6- and 1,7-diynes with enol ethers or a ketene acetal giving substituted benzenes in good yields. The same catalyst also catalyzes complete intermolecular [2+2+2] cycloadditions of two different monoynes with enol acetates giving tri- and tetrasubstituted benzenes in good yields with complete regioselectivity
MODIFIER FOR AROMATIC POLYESTER AND AROMATIC POLYESTER RESIN COMPOSITION COMPRISING THE SAME
申请人:TABATA Masayoshi
公开号:US20110224343A1
公开(公告)日:2011-09-15
The present invention provides a modifier for aromatic polyesters which enhances the melt fluidity of aromatic polyesters without a significant decrease in the heat resistance of the aromatic polyesters, and an aromatic polyester resin composition including the modifier for aromatic polyesters. The present invention relates to a modifier for aromatic polyesters comprising polyhydric phenol residues and residues of aromatic polycarboxylic acid, acid halide or acid anhydride thereof, and the modifier comprises a material having a structure composed of a first residue selected from the group consisting of divalent residues represented by Formula (I): —Ar—W
1
x
—Ar— and by Formula (II): —Ar—, the first residues being bonded to two identical or different second residues selected from the group consisting of monovalent residues represented by Formula (III):
and monovalent residues represented by Formula (IV): —O—C(O)—R
7
—.
[EN] PHTHALAZINES AS POTASSIUM ION CHANNEL INHIBITORS<br/>[FR] PHTHALAZINES SERVANT D'INHIBITEURS DES CANAUX IONIQUES POTASSIQUES
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2014143608A1
公开(公告)日:2014-09-18
A compound of formula (I), wherein A, R1, R3, and R24 are described herein. The compounds are useful as inhibitors of potassium channel function and in the treatment and prevention of arrhythmia, IKur-associated disorders, and other disorders mediated by ion channel function.
COMPOUNDS FOR THE TREATMENT OF ALZHEIMER'S DISEASE
申请人:Heine Niklas
公开号:US20100168070A1
公开(公告)日:2010-07-01
The invention relates to substituted 1,2-ethylenediamines of general formula (I),
wherein the radicals R
1
-R
13
, A, B, L and i are as defined in the description and in the claims. The invention also relates to the use thereof for treating Alzheimer's disease (AD) and similar diseases.