125401-75-4

Basic information

• Product Name: Bispyribac
• Synonyms: 2,6-BIS[(4,6-DIMETHOXY-2-PYRIMIDINYL)OXY]BENZOIC ACID;2,6-bis(4,6-dimethoxypyrimidin-2-yloxy)benzoic acid;BISPYRIBAC;Bispyribac acid
• CAS NO: 125401-75-4
• Molecular Formula: C₁₉H₁₈N₄O₈
• Molecular Weight: 430.37
• EINECS: 815-184-5
• Mol File: 125401-75-4.mol
• Article Data: 8

Chemical Properties

• Melting Point: 148-150°
• Boiling Point: 686.4 °C at 760 mmHg
• Flash Point: 368.9 °C
• Appearance: white crystal powder
• Density: 1.379 g/cm³
• Storage Temp.: Sealed in dry,Room Temperature
• Solubility: DMSO (Slightly, Sonicated, Heated), Methanol (Slightly)
• PKA: 1.58±0.50(Predicted)
• Water Solubility: 73.3 g/l at 20℃
• CAS DataBase Reference: Bispyribac(CAS DataBase Reference)
• NIST Chemistry Reference: Bispyribac(125401-75-4)
• EPA Substance Registry System: Bispyribac(125401-75-4)

Safety Data

• Hazardous Substances Data: 125401-75-4(Hazardous Substances Data)

Usage

Uses

2,6-Bis((4,6-dimethoxypyrimidin-2-yl)oxy)benzoic acid is a useful research chemical.

InChI:InChI=1/C19H17N4NaO8/c1-26-12-8-13(27-2)21-18(20-12)30-10-6-5-7-11(16(10)17(24)25)31-19-22-14(28-3)9-15(23-19)29-4;/h5-9H,1-4H3,(H,24,25);/q;+1/p-1

Upstream product

• 303-07-1 2,6-Dihydroxybenzoic acid 
• 113583-35-0 4,6-dimethoxypyrimidin-2-yl methyl sulfone 
• 2150-45-0 methyl 2,6-dihydroxybenzoate 

Downstream Products

• 125401-92-5 bispyribac sodium salt 
• 125401-97-0 isopropylidene aminoester of 2,6-bis[(4,6-dimethoxypyrimidin-2-yl)oxy]benzoic acid 

Relevant articles and documents

MANUFACTURING METHOD OF HERBICIDE

PROBLEM TO BE SOLVED: To provide an industrially desirable, economical and environmental friendly manufacturing method of sodium 2,6-bis(4,6-dimethoxypyrimidine-2-yloxy) benzoate known as herbicide bispyribac-sodium salt , further a manufacturing method capable of being conducted safely in an industrial scale. SOLUTION: There is provided a manufacturing method of compounds represented by the formula (3), especially sodium 2,6-bis(4,6-dimethoxypyrimidine-2-yloxy) benzoate, including reacting a compound represented by the formula (1) with a compound represented by the formula (2) in the presence of alkali metal hydroxide and in the presence of a solvent having relative dielectric constant of 5 to 80 and acceptor number of 0 to 60, excluding dimethyl sulphoxide. R1 and R2 are each independently (C1-C4)alkyl, M is H or an alkali metal atom. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPO&INPIT

Method for preparing herbicide bispyribac-sodium through phase transfer catalyst

The invention relates to a preparation method of herbicidal technical, in particular to a method for preparing a herbicide bispyribac-sodium through a phase transfer catalyst. The method comprises the step that 2-substituted-4,6-dimethoxy pyrimidine and 2,6-dihydroxy-benzoic acid serve as raw materials to react in solvent at the temperature of 0 DEG C to 150 DEG C in the presence of potassium carbonate and a catalyst, and then bispyribac-sodium is prepared. The method is characterized in that the phase transfer catalyst is adopted as the catalyst, and the phase transfer catalyst is a quaternary phosphonium salt or quaternary ammonium salt or polyether phase transfer catalyst. According to the method, bispyribac-sodium is prepared by adopting the phase transfer catalyst, the reaction yield is high and is increased by 10% or above at a time compared with an existing method, and an extremely important significance is achieved on bispyribac-sodium production.

2-fluoroacrylic acid derivatives, novel mixtures of herbicides and antidotes, and their use

The invention relates to novel α-fluoroacrylic acid derivatives, to active compound/antidote combinations which comprise α-fluoroacrylic acid derivatives and are outstandingly suitable for use in crops of useful plants, to their use and to methods for protecting crop plants.