15921-10-5Relevant academic research and scientific papers
Organic flame-retardant structure and application thereof in organic silicon surfactant and polyurethane material
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Paragraph 0028-0030, (2021/11/06)
The invention belongs to the field of polymer chemical industry, and relates to a flame-retardant material, an organic silicon surfactant and a polyurethane material, in particular to a flame-retardant organic structure and application thereof in the organic silicon surfactant and the polyurethane material. The invention provides an organic halogen-free flame-retardant structure and an efficient synthesis method thereof. Meanwhile, the organic halogen-free flame-retardant structure is introduced into an organic silicon surfactant and is applied to a polyurethane material. Experiments prove that the strategy can improve the flame retardance of the polyurethane high-resilience foam, and the polyurethane high-resilience foam is high in resilience and excellent in air permeability. Particularly in the application of a solar water heater, the polyurethane foaming plastic can achieve higher flame retardance without adding a flame retardant, and meanwhile, the flame-retardant organic silicon surfactant has the advantages of being good in flowability, high in storage stability in a composite material and the like.
Synthetic method of pirfenidone
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Paragraph 0034, (2020/11/12)
The invention relates to a process for synthesizing pirfenidone (1) by taking 5-methyl-3, 4-dihydro-2-pyridone and halogenated benzene (chlorobenzene, bromobenzene or iodobenzene) as raw materials inthe presence of a catalytic system consisting of a copper salt and an organic ligand and in the presence of an alkali. Compared with the 5-methylpyridine-2 (1H)-ketone, the 5-methyl-3, 4-dihydro-2-pyridone has the advantages that the 5-methyl-3, 4-dihydro-2-pyridone is easier to obtain and the cost is lower. According to the process, the high efficiency of the catalytic system consisting of copper(1) salt and an organic ligand in coupling of 5-methyl-3, 4-dihydro-2-pyridone and halogenated benzene is also utilized.
Synthesis method of Alectinib
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Paragraph 0032, (2020/12/15)
The invention relates to a method for preparing Alectinib or pharmaceutically acceptable salt thereof. The invention also relates to intermediate compounds useful in this process and to the preparation of such intermediate compounds.
Reactions of amidines with some carboxylic acid hydrazides
Bahceci, Sule,Yueksek, Haydar,Serdar, Mevlut
, p. 568 - 572 (2007/10/03)
Ten amidrazone derivatives (seven new compounds) and twelve 1,2,4-triazole derivatives (five new compounds) are synthesized and their structures are established by elemental analysis, IR, 1H NMR and 13C NMR spectral data.
