1190422-05-9Relevant academic research and scientific papers
Modular metal-carbon stabilized palladium nanoparticles for the catalytic hydrogenation of N-heterocycles
Zhang, Yu,Mao, Mao,Ji, Yi-Gang,Zhu, Jie,Wu, Lei
, p. 329 - 332 (2016)
We report here the first modular metal-carbon stabilized palladium nanoparticles based on binaphthyl scaffolds, which can be prepared from palladium salts and substituted binaphthyl diazonium salts in homogeneous system through direct reduction using sodium borohydride. The resulting palladium nanoparticles subjected to the electron density of modular moieties are found to be novel and efficient catalysts for the catalytic hydrogenation of N-heterocycles, affording the corresponding adducts in good to excellent yields under mild conditions.
Novel synthesis method of oseltamivir
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Paragraph 0099-0103; 0174, (2021/05/19)
The invention provides a novel synthesis method of oseltamivir. The synthesis method comprises the following steps: taking a compound (E)-2-(2-nitrovinyl) isoindoline-1,3-diketone and ethyl pyruvate as initial raw materials, and carrying out Michael addition reaction under the condition of catalysis of a thiourea catalyst to obtain a corresponding Michael addition product; then, subjecting the Michael addition product and (formyl methylene) triphenyl phosphine to a Wittig reaction and a Henry reaction in a pot so as to obtain a ring closing product; and forming an etherified product from the ring closing product and a trichloroacetonitrile intermediate, and performing reduction, acetylation and de-protection to obtain oseltamivir. The reaction route comprises six steps, raw materials used in each step of reaction are easy to obtain and not expensive, the operation is easy, the yield of each step of reaction is high, no heavy metal or azide is used in the whole synthesis process, and the method is green and safe and can be applied to industrial production.
