33241-96-2Relevant articles and documents
Synthesis of Lactams by Reductive Amination of Carbonyl Derivatives with ω-Amino Fatty Acids under Hydrosilylation Conditions
Tongdee, Satawat,Wei, Duo,Wu, Jiajun,Netkaew, Chakkrit,Darcel, Christophe
supporting information, p. 5536 - 5539 (2021/08/07)
An efficient method for the preparation of lactams from ω-amino fatty acids under hydrosilylation is described. A variety of lactams such as pyrrolidinones, piperidinones and 2-azepanones were selectively synthesised in moderate to excellent yields (29 examples, up to 95 % isolated yields) with a good functional group tolerance. Notably, no metallic based catalyst was required to perform this transformation.
Purification method for DL-alpha-amino caprolactam
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Paragraph 0019-0039, (2019/02/21)
The invention belongs to the technical field of the organic matter purification technology, and particularly relates to a purification method for DL-alpha-amino caprolactam. The preparation method comprises the following steps: S1: dissolving alpha-halogenated caprolactam and benzylamine in an organic solvent, adding alkali, controlling reaction temperature, and reacting to generate N-benzyl-DL-alpha-amino caprolactam; S2: adding the N-benzyl-DL-alpha-amino caprolactam generated by reaction in S1 into a reflux solvent, then, adding a catalyst and a hydrogen supply reagent, and carrying out reflux reaction to prepare a DL-alpha-amino caprolactam coarse product; S3: heating and dissolving the prepared DL-alpha-amino caprolactam coarse product by a recrystallization solvent, removing impurities during hotness, cooling, filtering, and taking solid, i.e. purified DL-alpha-amino caprolactam, wherein the recrystallization solvent is a mixed solvent obtained by mixing ethyl acetate, tetrahydrofuran and cyclohexanone at the mass ratio of (15-20):(6-8):5.
NOVEL, HIGHLY ACTIVE PYRAZOLO-PIPERIDINE SUBSTITUTED INDOLE-2-CARBOXAMIDES ACTIVE AGAINST THE HEPATITIS B VIRUS (HBV)
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Page/Page column 122, (2019/05/22)
The present invention relates generally to novel antiviral agents. Specifically, the present invention relates to compounds which can inhibit the protein(s) encoded by hepatitis B virus (HBV) or interfere with the function of the HBV replication cycle, compositions comprising such compounds, methods for inhibiting HBV viral replication, methods for treating or preventing HBV infection, and processes and intermediates for making the compounds.