- Synthesis and herbicidal activity of α-hydroxy phosphonate derivatives containing pyrimidine moiety
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A series of α-hydroxy phosphonate derivatives containing pyrimidine moiety were designed and synthesized. Their structures were characterized by IR, 1H NMR, MS and elemental analysis. The results of preliminary herbicidal activities (in vitro)
- Song, Hong,Mao, Huiyu,Shi, Deqing
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- Isoxazole oxime ester derivative and application thereof
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The invention discloses a 2(4)-(4,6-dimethoxypyrimidine-2-oxy)benzaldoxime-O-[3-aryl-5-methyl-isoxazole-4-formyl]ester derivative. The general formula of the derivative is represented by formula I, and in the formula I, X represents chlorine, fluorine, a
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Paragraph 0022; 0025; 0026
(2020/07/02)
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- Synthesis and Biological Activity Evaluation of Novel α-Amino Phosphonate Derivatives Containing a Pyrimidinyl Moiety as Potential Herbicidal Agents
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To find novel high-activity and low-toxicity herbicide lead compounds with novel herbicidal mode of action, series of novel α-amino phosphonate derivatives containing a pyrimidinyl moiety, I, II, III, and IV, were designed and synthesized by Lewis acid (m
- Chen, Jin-Long,Tang, Wu,Che, Jian-Yi,Chen, Kai,Yan, Gang,Gu, Yu-Cheng,Shi, De-Qing
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p. 7219 - 7229
(2015/09/01)
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- Synthesis and herbicidal activity of 2-aroxy-propanamides containing pyrimidine and 1,3,4-thiadiazole rings
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A series of novel N-{5-[2-(4,6-dimethoxy-pyrimidin-2-yloxy)-phenyl]-[1,3,4] thiadiazol-2-yl}2-aroxy-propanamides were designed and synthesized by the multistep reactions. 2-(4,6-Dimethoxy-pyrimidin-2-yloxy)-benzaldehyde (1) reacted with aminothiourea to y
- Liu, Man-Yun,Shi, De-Qing
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p. 432 - 435
(2014/04/17)
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- Synthesis, crystal structure, and herbicidal activity of pyrimidinyl benzylamine analogues containing a phosphonyl group
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A series of pyrimidinyl benzylamine analogues containing a phosphonyl group (2)was synthesized via the Mannich-type reactions of 2-(4,6- dimethoxypyrimidin-2-yloxy)benzoaldehyde l,aro- matic amines, and dialkyl phosphites or triphenyl phosphite in the pre
- Tang, Wu,Yu, Zhi-Hua,Shi, De-Qing
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experimental part
p. 148 - 155
(2011/07/07)
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- Dimethoxypyrimidines as Novel Herbicides. Part 2. Synthesis and Herbicidal Activity of O-Pyrimidinylsalicylates and Analogues
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A new series of the O-pyrimidinylsalicylates was synthesized and their herbicidal activity was examined. Some of these compounds showed very strong herbicidal activity under pre- and post-emergent treatment conditions against various kinds of grass and broadleaf weeds. Among these compounds, O-(4,6-dimethoxypyrimidin-2-yl)salicylic acid and its methyl ester were found to exhibit the highest activity. The herbicidal symptoms observed after the treatments included early cessation of plant growth followed by chlorosis, necrosis and plant death. The symptoms were similar to those caused by sulfonylureas and imidazolinones, which inhibit branched-chain acid biosynthesis.
- Nezu, Yukio,Miyazaki, Masahiro,Sugiyama, Kazuhiko,Wada, Nobuhide,Kajiwara, Ikuo,Miyazawa, Takeshige
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p. 115 - 124
(2007/10/03)
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- Benzaldehyde acetal compounds, preparation process thereof, and herbicidal compositions containing the same as active ingredients
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Benzaldehyde acetal compounds represented by the following formula: STR1 in which each R is a C3-8 alkyl group and forms an ether bond with the corresponding oxygen atom of the orthoaldehyde moiety have no injury to crops and, moreover, exhibit
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- Herbicidal substituted azines
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Herbicidal substituted azines of the formula STR1 in which m represents the numbers 0, 1, 2 or 3, A represents nitrogen or a C-X group where X represents hydrogen or halogen, Q represents oxygen or sulphur, R1 and R2 are identical or
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- 2-(4,6-dimethoxy-2-pyrimidinyloxy)benzaldoximes, preparation processes thereof, herbicides containing the same, and herbicidal compositions containing the same along with other active ingredient
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Disclosed are herbicidally active pyrimidine derivatives of the formula STR1 wherein R represents a hydrogen atom or an etherifying group, e.g., a lower alkyl, lower alkenyl, lower alkynyl, phenyl-substituted lower alkenyl, lower haloalkenyl, cycloalkyl, substituted phenyl-substituted lower alkenyl or phenyl-substituted lower alkynyl group; or a group represented by the following formula: STR2 wherein R1 represents a hydrogen atom or a lower alkyl group, X a halogen atom or a lower alkyl or lower alkoxyl group, m and n individually 0-2, and when m is 2, both Xs may be the same or different, and herbicidal compositions containing the same, alone or in combination with another herbicidally active compound, the pyrimidine derivatives being prepared by reaction of 2-(4,6-dimethoxy-2-pyrimidinyloxy)benzaldehyde with NH2 OR or with a salt of hydroxylamine followed by reaction with a halide of the formula RY wherein R has the same value as above and Y is Cl, Br or I.
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