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2 results on '"4H)- dione"'

1. A Facile Synthesis of Novel Herbicidal 1-Phenyl-piperazine-2,6-diones

Author

H. Yang, C. Wu, Z. Liu, C. Hsu, D. Xiang, and B. Li

Subjects
1-Phenyl-piperazine-2, 6-dione, 2-phenyl-tetrahydro-2H-pyrido-[1, 2-a]-pyrazine- 1, 3-(4H, 6H)-dione, 2-phenyl-tetrahydropyrrolo[1, 2-a]pyrazine-1, 3(2H, 4H)- dione, herbicide, synthesis., Organic chemistry, QD241-441
Abstract

Novel 1-phenyl-piperazine-2,6-diones were prepared by a new facile synthetic routeusing methyl N-substituted iminomonoacetate as starting material. The structures of thesecompounds were established by 1H-NMR, 13C-NMR and GC/MS. 2-(4-Chloro-5-cyclo-pentyl-oxy-2-fluorophenyl)-tetrahydro-2H-pyrido-[1,2-a]-pyrazine-1,3-(4H,6H)-dione displayed thegreatest herbicidal activity.

Published
2005
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2. A Facile Synthesis of Novel Herbicidal 1-Phenyl-piperazine-2,6-diones

Author

Chao Wu, Chi-Tung Hsu, Hua-Zheng Yang, Bin Li, Zhen-Long Liu, and Dong Xiang

Subjects
2-a]-pyrazine- 1, synthesis, Pharmaceutical Science, 1-Phenyl-piperazine-2, Piperazines, Article, Analytical Chemistry, lcsh:QD241-441, 1-Phenyl-piperazine-2,6-dione, chemistry.chemical_compound, lcsh:Organic chemistry, 2-a]pyrazine-1, herbicide, Drug Discovery, Organic chemistry, Physical and Theoretical Chemistry, Piperazine, 3(2H, 6-dione, 4H)- dione, 2-phenyl-tetrahydropyrrolo[1,2-a]pyrazine-1,3(2H,4H)- dione, Herbicides, Chemistry, Organic Chemistry, 3-(4H, Plants, 6H)-dione, 2-phenyl-tetrahydropyrrolo[1, Chemistry (miscellaneous), 2-phenyl-tetrahydro-2H-pyrido-[1, Molecular Medicine, 2-phenyl-tetrahydro-2H-pyrido-[1,2-a]-pyrazine-1,3-(4H,6H)-dione
Abstract

Novel 1-phenyl-piperazine-2,6-diones were prepared by a new facile synthetic route using methyl N-substituted iminomonoacetate as starting material. The structures of these compounds were established by (1)H-NMR, (13)C-NMR and GC/MS. 2-(4-Chloro-5-cyclo-pentyl-oxy-2-fluorophenyl)-tetrahydro-2H-pyrido-[1,2-a]-pyrazine-1,3-(4H,6H)-dione displayed the greatest herbicidal activity.

Published
2005

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