142618-92-6Relevant articles and documents
Versatile routes to chiral 4-substituted 2-oxazolindinones and α-amino acids. Use of chiron, [4 + 2] cycloadducts of dialkyl azodi-carboxylates and 2-oxazolones
Matsunaga,Ishizuka,Marubayashi,Kunieda
, p. 1077 - 1079 (1992)
The thermal reaction of 3-[(1S)-2-alkoxy-1-apocamphanecarbonyl]-2-oxazolones with dialkyl azodicarboxylates results in exclusive formation of [4 + 2] type cycloadducts with moderate levels of diastereofacial selection, which serve as versatile chiral synthons for a wide variety of 4-alkyl and 4-alkyl-2-oxazolidinones as well as α-amino acids.
Crystal Form of Hepatitis B Surface Antigen Inhibitor
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Paragraph 0050; 0053, (2022/01/24)
The present invention discloses a crystal form of a hepatitis B surface antigen inhibitor and a preparation method therefor, and also comprises the use of the crystal form in preparing the hepatitis B surface antigen inhibitor.
Asymmetric Multicomponent Sulfa-Michael/Mannich Cascade Reaction: Synthetic Access to 1,2-Diamino-3-Organosulfur Compounds and 2-Nitro Allylic Amines
Hou, Wenduan,Wei, Qi,Liu, Guisheng,Chen, Jing,Guo, Jing,Peng, Yungui
supporting information, p. 4870 - 4873 (2015/10/12)
A novel catalytic asymmetric three-component intermolecular sulfa-Michael/Mannich cascade reaction has been developed using a chiral multifunctional catalyst. This reaction provides facile access to 1-amino-2-nitro-3-organosulfur compounds bearing three c
The first synthesis of β-amino phosphonates using cyclic sulfamidates
Das, Biswanath,Reddy, Cheruku Ravindra,Nagendra, Siddavatam,Lingaiah, Maram
scheme or table, p. 3496 - 3498 (2011/07/08)
Cyclic sulfamidates (prepared from α-amino acids and β-amino alcohols) have been used for the first time for the synthesis of novel β-amino phosphonates (chiral and achiral) by treatment with dialkyl phosphites using sodium hydride. 2-Substituted and 1,2-disubtituted β-amino phosphonates have efficiently been prepared following this method. The products are formed in high yield (79-84%) within 8-12 h.