- An efficient synthesis of new thiazolopyrimidinones under microwave irradiation
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7-Chloromethyl-6-nitro-5H-thiazolo[3,2-a]pyrimidin-5-one (2) is obtained by cyclocondensation of 2-aminothiazole with ethyl 4-chloroacetoacetate. This product was shown to react with various nitronate or malonate anions under microwave irradiation to give
- Djekou, Serge,Gellis, Armand,El-Kashef, Hussein,Vanelle, Patrice
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- FUSED PYRIMIDINEONE COMPOUNDS AS TRPV3 MODULATORS
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The present invention provides transient receptor potential vanilloid (TRPV) modulators. In particular, compounds described herein are useful for treating or preventing diseases, conditions and/or disorders modulated by TRPV3. Also provided herein are pro
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(2009/12/05)
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- Substituted pyrimidinyl organophosphorus insecticides
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An organophosphorus compound having the structural formula STR1 where R is C1 -C4 alkyl; R1 is hydrogen or methyl; or R and R1 together are a diradical having the formula --SC(Y)=Z--, where Y is halogen, hydrogen or C1 -C2 alkyl; and Z is nitrogen, CH, C(CH3) or C(C2 H5) with the proviso that if Y is hydrogen, Z cannot be CH; R2 is hydrogen, chlorine or bromine; R3 is methyl or ethyl; R4 is methoxy, ethoxy, --SCH3 or --SC2 H5 ; and X is oxygen or sulfur and their hydrochlorides is disclosed. These compounds are useful as insecticides or nematocides. In another aspect of this invention a method of controlling rice planthoppers is provided. In this method an insecticidally effective amount of a compound having the formula given above where R is C1 -C4 alkyl or benzyl; R1 is hydrogen or C1 -C3 alkyl; or R and R1 together are a diradical selected from the group consisting of --CH=CH--CH=CH--, --CH=CCl--CH=CH--, --CH=C(CH3)--CH=CH-- and --SC(Y)=Z--, where Y is halogen, hydrogen or C1 -C2 alkyl; and Z is nitrogen, CH, C(CH3) or C(C2 H5); R2 is hydrogen or bromine; R3 is methyl or ethyl; R4 is methoxy, ethoxy or propylthio, with the proviso that if R2 is bromine, R4 is propylthio, and X is oxygen or sulfur is applied to the loci where rice planthoppers reside.
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- Pyridopyrimidinone compounds
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A compound of the formula STR1 wherein R and R1 together form a 1,3-butadien-1,4-diyl group optionally substituted with a methyl or chloro group and R2 is halogen is disclosed. The compound is useful as an intermediate in the synthesis of insecticidal organophosphorus compounds.
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