478413-45-5Relevant articles and documents
PROCESS FOR PREPARING 4,6-BIS(ARYLOXY)PYRIMIDINE DERIVATIVES
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Page/Page column 31, (2014/12/12)
Process for preparing 4,6-bis(aryloxy)pyrimidine derivatives A process is provided for preparing 4,6-bis(aryloxy)pyrimidine derivatives. The process is conducted in water as reaction medium and catalyzed by one or more tertiary-amine catalyst(s). It has been found that a water based reaction substantially free of organic solvents can be carried out providing excellent yields by the addition of one or more tertiary-amine catalysts to the reaction medium. This provides a clean reaction and produces the desired product in high yields.
PREPARATION METHODS OF AZOXYSTROBIN AND ITS ANALOGS
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Page/Page column 2, (2010/08/03)
Preparation method of a compound of general formula (I) comprises the following steps: (1) a compound of general formula (II) reacts with a formylating agent in an aprotic solvent at a temperature between ?20° C. and 200° C. in the presence of a Lewis acid, then an organic base is added to promote the reaction to obtain an intermediate product; (2) the above intermediate product reacts with a methylating agent in the presence of an alkali at a temperature between ?20° C. and 100° C. to obtain the compound of formula (I).