601-97-8Relevant articles and documents
Method for synthesizing herbicide pyriminobac-methyl in paddy field
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Paragraph 0043-0045; 0063-0065; 0083-0085; 0103-0105; 0108, (2021/02/24)
The invention belongs to the field of fine chemical engineering, and particularly relates to a preparation method of herbicide pyriminobac-methyl for a paddy fields. The preparation method comprises the following steps: synthesizing 3-hydroxy phthalic anhydride by using 3-chlorophthalic anhydride as a new raw material, protecting carbonyl by using diethyl malonate, hydrolyzing to obtain 2-acetyl-6-hydroxy benzoic acid, and esterifying to obtain 2-acetyl-6-hydroxy methyl benzoate; then carrying out imidization reaction with methoxyamine hydrochloride to obtain 2-hydroxy-6-(1-methoxy iminoethyl-methyl)-benzoate, and finally, condensing with 2-tosyl-4, 6-dimethoxypyrimidine to obtain pyriminobac-methyl. In the process of preparing pyriminobac-methyl, high-risk reagents such as n-butyllithiumare avoided, a large amount of wastewater generated by diazotization is avoided, the income is increased, and the environment is protected.
OLIGONUCLEOTIDE-BASED PROTEOLYSIS TARGETING CHIMERA
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Paragraph 0427; 0431; 0433, (2020/01/08)
Disclosed herein, inter alia, are oligonucleotide-based proteolysis targeting chimeras and methods of use thereof.
Preparation method of 3-hydroxyl phthalic anhydride
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Paragraph 0025; 0027; 0031; 0035; 0040; 0044; 0048, (2017/09/18)
The invention belongs to the technical field of organic synthesis and in particular relates to a preparation method of a key medical intermediate, 3-hydroxyl phthalic anhydride. The method comprises the following steps: with a compound I as a raw material, oxidizing the raw material to obtain 3-methoxyl phthalic acid; performing a reaction on 3-methoxyl phthalic acid to generate 3-hydroxyl phthalic acid; and performing dehydration and condensation on 3-hydroxyl phthalic acid to generate 3-hydroxyl phthalic anhydride. 3-hydroxyl phthalic anhydride prepared by the method provided by the invention is high in yield and good in purity. The method is free of special equipment demands, has mild conditions and is safe and environmental-friendly in an industrial process, and the process technology provided by the invention can be industrially performed.
A hydroxy benzoic anhydride preparation method
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Paragraph 0036; 0038-0039, (2017/08/25)
The invention discloses a preparation method of hydroxy benzene anhydride. The preparation method comprises the following steps: mixing nitrophthalonitrile and an organic solvent, adding alkali and nitrite, performing heating and a reflux reaction, and performing aftertreatment so as to obtain hydroxyl phthalonitrile; mixing the hydroxyl phthalonitrile and a KOH aqueous solution, performing heating, reflux and filtration, collecting filtrate, after the filtrate is cooled, regulating the pH to be 1, performing multiple extraction, taking an extraction liquid, and performing aftertreatment so as to obtain hydroxyl phthalic acid; and finally performing vacuum sublimation on the hydroxyl phthalic acid so as to obtain the hydroxy benzene anhydride. The simple preparation method of the hydroxy benzene anhydride, provided by the invention, is mild in reaction conditions, simple and convenient to operate, easy to control, low in equipment requirements and very high in yield.
Naphthalenes Oxidation by Aqueous Sodium Hypochlorite Catalyzed by Ruthenium Salts under Phase-Transfer Catalytic Conditions
Patil, Rajendra D.,Sasson, Yoel
, p. 991 - 997 (2016/04/20)
Highly effective and fast oxidation of naphthalene(s) to phthalic acid(s) under biphasic conditions using nominal catalyst loading (0.5 mol%) of ruthenium chloride, 2.5 mol% tetrabutyl ammonium bromide as phase transfer catalyst and inexpensive aqueous sodium hypochlorite (NaOCl) as reagent has developed. Recovery, regeneration and reuse of the catalytic system add its merit to green chemistry.
Practical synthesis of a phthalimide-based Cereblon ligand to enable PROTAC development
Lohbeck, Jasmin,Miller, Aubry K.
supporting information, p. 5260 - 5262 (2016/10/30)
The use of small molecules to regulate cellular levels of specific proteins is poised to become a powerful technique in the coming years. Critical to the success of any project utilizing such an approach will be the ability to synthesize libraries of candidate small molecules for testing in cellular systems. Herein, we describe a practical synthesis of a phthalimide-based scaffold, which can be easily diversified to make Cereblon-targeting PROTACs. We demonstrate the effectiveness of this approach by synthesizing a ‘PROTAC toolbox’ of four amines which can be coupled to inhibitors in a straightforward manner.
Ti(iv) oxalate complex-derived hierarchical hollow TiO2 materials with dye degradation properties in water
Zhang, Ye,Qiao, Zhen-An,Liu, Junmin,Wang, Xue,Yao, Shuo,Wang, Tao,Liu, Bing,Ma, Yali,Liu, Yunling,Huo, Qisheng
, p. 265 - 270 (2015/12/24)
Ti(iv)-based complexes have been demonstrated as candidates for preparing hybrid and functional materials, and have received considerable attention. In this paper, hierarchical hollow titania materials with different surface nanostructures were synthesized successfully using a hydrothermal process via the transformation of a Ti(iv) oxalate complex as a precursor. Different concentrations of ammonia were used to adjust the morphologies and crystalline forms of the hydrothermal products. The hierarchical hollow anatase titania materials, HHTM-1 (cal) and HHTM-2 (cal), have high surface areas of up to 132 m2 g-1 and 84 m2 g-1, respectively, and show superior performance for dye degradation in water.
Inclusion complex containing epoxy resin composition for semiconductor encapsulation
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, (2014/03/21)
The invention is an epoxy resin composition for sealing a semiconductor, including (A) an epoxy resin and (B) a clathrate complex. The clathrate complex is one of (b1) an aromatic carboxylic acid compound, and (b2) at least one imidazole compound represented by formula (II): wherein R2 represents a hydrogen atom, C1-C10 alkyl group, phenyl group, benzyl group or cyanoethyl group, and R3 to R5 represent a hydrogen atom, nitro group, halogen atom, C1-C20 alkyl group, phenyl group, benzyl group, hydroxymethyl group or C1-C20 acyl group. The composition has improved storage stability, retains flowability when sealing, and achieves an effective curing rate applicable for sealing delicate semiconductors.
Metallo-β-lactamase inhibitory activity of 3-alkyloxy and 3-amino phthalic acid derivatives and their combination effect with carbapenem
Hiraiwa, Yukiko,Morinaka, Akihiro,Fukushima, Takayoshi,Kudo, Toshiaki
, p. 5841 - 5850 (2013/09/12)
3-Alkyloxy and 3-amino phthalic acid derivatives were found to have metallo-β-lactamase inhibitory activity. Among them, 3-amino phthalic acid derivatives showed both potent activity against metallo-β-lactamase, IMP-1 inhibitory activity and a strong combination effect with biapenem (BIPM), carbapenem antibiotic. In particular, the 4′-hydroxy-piperidine derivative showed strong IMP-1 inhibitory activity and a combination effect with various antibiotics.
4'-O-SUBSTITUTED ISOINDOLINE DERIVATIVES AND COMPOSITIONS COMPOSITIONS COMPRISING AND METHODS OF USING THE SAME
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Page/Page column 52; 76-77, (2008/12/07)
Provided are 4'-O substituted isoindoline compounds, and pharmaceutically acceptable salts, solvates, clathrates, stereoisomers, and prodrugs thereof. Methods of use, and pharmaceutical compositions of these compounds are disclosed.