672-47-9Relevant articles and documents
Preparation method of 4-chloro-2-trifluoromethyl pyrimidine
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Paragraph 0017, (2017/07/20)
The invention discloses a preparation method of 4-chloro-2-trifluoromethyl pyrimidine (formula I). According to the preparation method, cheap and easily purchased methyl trifluoroacetate and malonamide are taken as the raw materials. The preparation method has the advantages that no pricy material is used, the reaction conditions are mild, the used equipment is simple, the EHS risk is little, the cost is low, and the preparation method is suitable for massive production.
SUBSTITUTED TRIAZOLOPYRIMIDINES AS PDE8 INHIBITORS
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Page/Page column 35, (2011/06/16)
Compounds of Formula (I): wherein R1 , R2, R3, R4, and R5 are as defined herein, are disclosed.
PYRIMIDINE DERIVATIVES FOR THE TREATMENT OP GABA B MEDIATED NERVOUS SYSTEM DISORDERS
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Page/Page column 25-26, (2010/11/25)
The invention relates to novel heterocyclic compounds of the formula (I) in free base form or in acid addition salt form, in which R1, R2, R3, R4 and A are as defined in the specification, to their preparation, to their use as medicaments for the treatment of certain nervous system disorders and to medicaments comprising them.