Interaction of Aryloxychlorocarbenes with Acetylenedicarboxylate: Novel Formation of Polyfunctional Butadienes and 8-Oxatricyclo[3.2.1.02.4]oct-6-enes
摘要:
The interaction of aryloxychlorocarbenes with dialkyl acetylenedicarboxylates has been examined. Thermolyses of 3-aryloxy-3-chlorodiazirines in the presence of acetylenedicarboxylate resulted in the formation of unexpected polyfunctional 1,3-butadienes and 8-oxatricyclo[3.2.1.0(2.4)]oct-6-enes or of 2-aryoxycarbonylmaleates dependent upon reaction conditions. This work confirmed the nucleophilicity of aryloxychlorocarbenes and underlined their synthetic potential.
USE OF PYRIDINE UREA COMPOUND HAVING SNAIL-KILLING ACTIVITY
申请人:THE NATIONAL INSTITUTE OF PARASITIC DISEASES, CHINESE CENTER FOR DISEASE CONTROL AND PREVENTION
公开号:US20210022340A1
公开(公告)日:2021-01-28
The present invention relates to use of a pyridine urea compound having snail-killing activities, and relates to a method for preparing the pyridine urea compound. In particular, the present invention discloses a compound having the structure as shown in formula (I), an optical isomer thereof, a racemate thereof, a solvate thereof, or a pharmaceutically acceptable salt thereof, the compound having a significant killing effect on various snails as parasitic disease vectors and low toxicity to non-target organism fish.
PHTHALAZINONES AND ISOQUINOLINONES AS ROCK INHIBITORS
申请人:Bristol-Myers Squibb Company
公开号:US20140206686A1
公开(公告)日:2014-07-24
The present invention provides compounds of Formula (I):
or stereoisomers, tautomers, or pharmaceutically acceptable salts thereof, wherein all the variables are as defined herein. These compounds are selective ROCK inhibitors. This invention also relates to pharmaceutical compositions comprising these compounds and methods of treating cardiovascular, smooth muscle, oncologic, neuropathologic, autoimmune, fibrotic, and/or inflammatory disorders using the same.
Flame-retarded thermosetting resin composition, prepregs and electrical
申请人:Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
公开号:US05360887A1
公开(公告)日:1994-11-01
A flame-retarded thermosetting resin composition is provided by blending about 5 to 45 mole % of a phenylcyanate having at least one halogen substituent at the ortho or para position relative to the cyanato group, and about 55 to 95 mole % of a halogen-free bis-4-phenylcyanate. A flame retardancy of V-O grade of UL94 is achieved in the thermoset resin of the composition without compromising dielectric, heat resistance, moisture absorption and other properties.
Under neat conditions, an efficient method for synthesis of imidoesters has been developed using cyanatobenzenes and dicarbonyl compounds. Nucleophilic addition spontaneously occurred between the two kinds of materials at room temperature with yields of up to 90%. A mechanism directed towards to the imidoester formation has been proposed. (C) 2014 Yan Xiong. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.