56941-77-6Relevant articles and documents
Highly stereoselective synthesis of β-lactams by condensation of the titanium enolate of a chiral 2-pyridylthioester with chiral imines
Annunziata, Rita,Benaglia, Maurizio,Chiovato, Alessandro,Cinquini, Mauro,Cozzi, Franco
, p. 10025 - 10032 (1995)
The reaction of the titanium enolate of a 2-pyridylthioester derived from (R)-3-hydroxybutyric acid with chiral imines affords 3,3'-anti-3,4-trans configurated β-lactams in a highly selective fashion. The methodology has been applied to the synthesis of a
Synthesis method of R-benzyl phenylethylamine
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Paragraph 0016; 0023-0078, (2021/05/01)
The invention is suitable for the technical field of chemical synthesis, and provides a synthetic method of R-benzyl phenylethylamine, which comprises the following steps: reacting R-benzyl phenylethylamine with benzaldehyde in methanol to obtain an imine substance; and carrying out reduction reaction on the imine substance and sodium borohydride to obtain the R-benzyl phenylethylamine. According to the synthetic method of R-benzyl phenylethylamine provided by the embodiment of the invention, methanol is used as a solvent in the process of synthesizing an intermediate imine from R-benzyl phenylethylamine and benzaldehyde, operation of evaporating toluene after toluene is used as a solvent for reaction in the prior art can be reduced, and the subsequent reduction reaction can continue to use the methanol solvent, so that the cost is reduced, and operation is simplified. In addition, the product synthesized by the synthesis method is high in yield and high in purity.
Vanadium-and chromium-catalyzed dehydrogenative synthesis of imines from alcohols and amines
Madsen, Robert,Miao, Yulong,Samuelsen, Simone V.
supporting information, p. 1328 - 1335 (2021/05/29)
Vanadium(IV) tetraphenylporphyrin dichloride and chromium(III) tetraphenylporphyrin chloride have been developed as catalysts for the acceptorless dehydrogenation of alcohols. The catalysts have been applied to the direct synthesis of imines in overall good yields from a variety of alcohols and amines. The transformations are proposed to proceed by metal?ligand bifunctional pathways with an outer-sphere transfer of two hydrogen atoms from the alcohol to the metal porphyrin complexes. The results show that vanadium and chromium catalysts can also be employed for the dehydrogenation of alcohols with the release of hydrogen gas, and they may represent valuable alternatives to other catalysts based on Earth-abundant metals.