Diflumetorim is a member of pyrimidinamine fungicides that possess excellent antifungal activities. Nevertheless, as reported that the activity of diflumetorim to corn rust (Puccinia sorghi) was not ideal (EC50 = 53.26 mg/L). Herein, a series of novel pyrimidinamine derivativescontaining phenyl-thiazole/oxazole moiety were designed based on our previous study and the structural characteristics of
with carbodiimides to form the corresponding substituted ketenes that can react in situ with alcohols providing esters in a high yield. The ketene formed by the treatment of ethyl 2-methylmalonate with DCC was trapped in situ by a [4+2] cycloaddition with a second DCC molecule. The chemoselectivity of the acylation through the keteneintermediates was found to be substantially different from that of conventional
Process for producing 1,3-dithiol-2-ylidene malonates
申请人:NIHON NOHYAKU CO., LTD.
公开号:EP0062118A1
公开(公告)日:1982-10-13
Preparation of a 1,3-dithiol-2-ylidene malonic-acid dialkyl ester for use as an agricultural or horticultural fungicide and as a therapeutic agent for treating hepatic diseases by a process comprising reacting a dialkyloxycarbonylketene dimercaptide with a trihalogenethane in the presence of a base, according to the formula:
in which
M = alkali metal or ammonium
Y= halogen
Z=halogen or hydrogen
R and R'= lower alkyl.
Process of producing 1,3-dithiol-2-ylidene malonic acid dialkyl esters
申请人:NIHON NOHYAKU CO., LTD.
公开号:EP0062119A1
公开(公告)日:1982-10-13
Preparation of a 1,3-dithiol-2-ylidene malonic-acid dialkyl ester for use as an agricultural or horticultural fungicide and as a therapeutic agent for treating hepatic diseases can be prepared by a new process comprising reacting a dialkyloxycarbonylketene dimercaptide with a 1,1-dihalogenoethylene, according to the formula:
in which
M=alkali metal or ammonium
X = halogen
R and R'=tower alkyl.
制备用作农用或园艺杀真菌剂和治疗肝病的治疗剂的 1,3-二硫醇-2-亚基丙二酸二烷基酯,可通过一种新工艺制备,该工艺包括使二烷氧基羰基酮二巯基化合物与 1,1-二卤代乙烯反应,其反应式如下: 式中 M=碱金属或铵 X=卤素 R 和 R'= 塔式烷基。
Blocked isocyanate group-containing resin composition and thermosetting composition containing the same
申请人:Kansai Paint Co., Ltd.
公开号:EP1236751A1
公开(公告)日:2002-09-04
A blocked isocyanate group-containing resin composition and a thermosetting resin composition using the same that comprise a resin (C) obtainable by modifying a resin (A) having two or more blocked isocyanate groups of a specific molecular structure in one molecule with a specific monohydric alcohol (B), and by replacing the substituent of the blocked isocyanate groups with a group having a larger number of carbon atoms, thereby lowering solubility parameter value. The compositions exhbit good storage stability and good compatibility with base resins for paint.