609-85-8Relevant articles and documents
Comparative biological study between quinazolinyl–triazinyl semicarbazide and thiosemicarbazide hybrid derivatives
Patel, Janki J.,Modh, Rahul P.,Asamdi, Manjoorahmed,Chikhalia, Kishor H.
, p. 2271 - 2287 (2020/07/04)
Abstract: Practical synthesis and biological activities of quinazolinyl–triazinyl semicarbazides (10a–j) and quinazolinyl–triazinyl thiosemicarbazides (11a–j) have been described. The novel semicarbazides and thiosemicarbazides were prepared by condensati
2,4-Bis(arylethynyl)-9-chloro-5,6,7,8-tetrahydroacridines: Synthesis and photophysical properties
Alimi, Kamel,Ayed, Mohamed Adnene Hadj,Braiek, Mourad Ben,Chaaben, Noureddine,Jabli, Mahjoub,Jopp, Stefan,Langer, Peter,Tka, Najeh
, p. 1629 - 1640 (2021/07/26)
Acridine derivatives have attracted considerable interest in numerous areas owing to their attractive physical and chemical properties. Herein, starting from readily available anthranilic acid, an efficient synthesis of 2,4-bis(arylethynyl)-9-chloro-5,6,7
Method of catalytically synthesizing polybromo-aniline in water phase
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Paragraph 0012; 0023, (2019/10/04)
The invention discloses a method of catalytically synthesizing polybromo-aniline in a water phase. The method comprises following steps: adding a catalytic amount of a free radical initiator, aniline derivatives, cheap and low-toxic bromine salts, and water into a reactor; carrying out reactions in a photocatalytic reaction instrument under power of 5W at a room temperature; after a while, extracting the reaction product by ethyl acetate, and carrying out recrystallization to obtain polybromo-aniline; wherein the free radical initiator is eosin, sodium persulfate, or potassium persulfate. The power of the incandescent lamp of the photocatalytic reaction instrument is 5W. The free radical initiator and bromine salts are cheap and easily available. The method is an ideal synthesis method of polybromo-aniline. Cheap and low-toxic bromine salts are used to replace liquid bromine. The cheap and easily available free radical initiator is used to replace unstable and explosive hydrogen peroxide. After 4 to 10 hours of reactions under the power of 5W, polybromo-aniline can be synthesized, the yield and the reaction selectivity are high, the byproducts are few, and the post treatment is simple.
Preparation method of 3,5-dibromo-2-aminobenzoic acid
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Paragraph 0038-0073, (2019/01/16)
The invention discloses a preparation method of 3,5-dibromo-2-aminobenzoic acid. The preparation method comprises the following steps: (I) performing in-situ oxidation on bromide with an oxidant underan acidic condition, and carrying out a bromination reaction on phthalimide to obtain N-bromophthalimide; (II) performing Hoffmann degradation on the N-bromophthalimide under the action of alkali toobtain 2-aminobenzoic acid and bromoanion; (III) further adding an appropriate amount of bromide and oxidant, and carrying out a bromination reaction on the 2-aminobenzoic acid to obtain the product,namely, 3,5-dibromo-2-aminobenzoic acid. The preparation method has the advantages of environment-friendly reaction system, simple, convenient and safe reaction operation, low cost, high reaction selectivity and high product yield and the like.
Preparation method for ambroxol hydrochloride intermediate 3,5-dibromo-2-aminobenzoic acid
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Paragraph 0021; 0032; 0033; 0035; 0039, (2019/01/14)
The invention discloses a preparation method for an ambroxol hydrochloride intermediate 3,5-dibromo-2-aminobenzoic acid. The method enables the ambroxol hydrochloride intermediate 3,5-dibromo-2-aminobenzoic acid to be obtained through the following two-st
Insect cyclopropanecarboxamide compound and preparing method thereof and application
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Paragraph 0043; 0044; 0045, (2017/08/28)
The invention is insect cyclopropanecarboxamide compound and preparing method thereof and application relating to field of pesticide. The insect cyclopropanecarboxamide compound in the invention is a new compound that acts on ryanicide recipient of insect
Preparation method of bromhexine hydrochloride
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Paragraph 0054; 0055; 0056, (2017/08/28)
The invention provides a preparation method of bromhexine hydrochloride. The method comprises the steps that 2-amino-3, 5-dibromo-benzene and N-methyl cyclohexane are used as the raw material, and bromhexine hydrochloride is obtained after reductive amina
PYRAZOLYL AMIDE COMPOUNDS AND USES THEREOF
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Paragraph 0130-0131, (2016/10/27)
Disclosed is a pyrazole amide compound of a novel structure as represented by general formula I, wherein, each substituent group is as defined in the specification. The compound of general formula I has good insecticidal activity, and can be used for pest control.
Synthesis of 2,1-benzisoxazole-3(1H)-ones by base-mediated photochemical N-O bond-forming cyclization of 2-azidobenzoic acids
Dzhons, Daria Yu.,Budruev, Andrei V.
supporting information, p. 874 - 881 (2016/07/06)
The base-mediated photochemical cyclization of 2-azidobenzoic acids with the formation of 2,1-benzisoxazole-3(1H)-ones is reported. The optimization and scope of this cyclization reaction is discussed. It is shown that an essential step of the ring closure of 2-azidobenzoic acids is the formation and photolysis of 2-azidobenzoate anions.
Efficient access to 2,6,8-trisubstituted 4-aminoquinazolines through microwave-assisted one-pot chemoselective Tris-Suzuki-Miyaura or SNAr/bis-Suzuki-Miyaura reactions in water
Kabri, Youssef,Crozet, Maxime D.,Terme, Thierry,Vanelle, Patrice
supporting information, p. 3806 - 3817 (2015/06/16)
An efficient, sequential, one-pot strategy for synthesizing polyfunctionalized quinazoline derivatives is presented. After selective amination of 6,8-dibromo-2,4-dichloroquinazoline at the C-4 position, 2,6,8-trisubstituted 4-aminoquinazoline derivatives