55279-30-6Relevant articles and documents
Synthesis method of 3-amino methyl isonicotinate
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Paragraph 0036-0038; 0051-0053; 0066-0068, (2021/09/15)
The invention discloses a synthesis method of 3-amino methyl isonicotinate, wherein the synthesis method comprises the steps: by taking 4-trifluoromethyl nicotinic acid as an initial raw material, sequentially carrying out acylation condensation series connection, Hofmann degradation, hydrolysis and esterification reaction to obtain the 3-amino methyl isonicotinate. The synthesis method has the advantages of mild reaction conditions, high yield, low cost, easily available raw materials, and realization of industrial production, the thionyl chloride reaction liquid can be repeatedly used, the utilization rate of the raw materials is improved, the resource waste is reduced, the pollution is reduced, the production cost of the whole process is furthest reduced, and the application value is extremely high.
High-yield synthesis method of methyl 3-aminoisonicotinate
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Paragraph 0013; 0015; 0017; 0019;0021; 0023; 0025, (2020/05/01)
The invention belongs to the field of chemical pharmacy, and particularly discloses a high-yield synthesis method of methyl 3-aminoisonicotinate. According to the high-yield synthesis method, 4-picolinic acid is used as a raw material and subjected to brominating, ammonifying and esterifying to obtain methyl 3-aminoisonicotinate. The high-yield synthesis method of methyl 3-aminoisonicotinate has the advantages of mild reaction conditions, high total yield, realization of repeated use of a 3-bromo-4-picolinic acid reaction waste filtrate, improvement of the utilization rate of the raw material,reduction of resource waste, maximum reduction of the production cost of the whole process, and extremely high application value.
Hofmann-type rearrangement of imides by in situ generation of imide-hypervalent iodines(III) from iodoarenes
Moriyama, Katsuhiko,Ishida, Kazuma,Togo, Hideo
supporting information; experimental part, p. 946 - 949 (2012/05/05)
The Hofmann-type rearrangement of aromatic and aliphatic imides using a hypervalent iodine(III) reagent generated in situ from PhI, m-CPBA, and TsOH·H2O proceeded in the presence of a base in alcohol to provide anthranilic acid derivatives and amino acid derivatives in high yields, respectively. This reaction proceeds through a tandem reaction via alcoholysis followed by a Hofmann rearrangement promoted by the formation of an imide-λ3-iodane intermediate.