A variety of ethyl 1-substituted 2-aryl-5-ethoxy-6-oxo-1,6-dihydropyrimidine-4-carboxylates were synthesized by efficient thermal or microwave-promoted Suzuki coupling of 2-chloro-N1-substituted precursors.
2-(SUBSTITUTED PHENYL)-6-AMINO-5-ALKOXY, THIOALKOXY AND AMINOALKYL-4-PYRIMIDINECARBOXYLATES AND THEIR USE AS HERBICIDES
申请人:Epp Jeffrey B.
公开号:US20090062125A1
公开(公告)日:2009-03-05
2-(Substituted phenyl)-6-amino-5-alkoxy, thioalkoxy and aminoalkyl-4-pyrimidinecarboxylic acid and its derivatives are potent herbicides demonstrating broad spectrum of weed control.
A class of pyrimidinone derivatives of formula (I): wherein Z, R
1
, R
2
and R
3
are as defined herein; and pharmaceutically acceptable salts thereof; are inhibitors of viral polymerases, especially (the hepatitis C virus (HCV) polymerase enzyme.
The present invention provides a process to prepare a pyridine-2,3-dicarboxylate derivative via the reaction of a dialkyl alkoxy(or alkylthio)oxalacetate with an appropriately substituted acrolein compound in the presence of an ammonia source and a solvent. The present invention also provides useful intermediate compounds of formula IV. ##STR1##