58196-33-1Relevant articles and documents
Development of a C2-Symmetric Chiral aza Spirocyclic Diol
Guo, Weicong,Liu, Qinzhe,Jiang, Jijun,Wang, Jun
, p. 3110 - 3113 (2020)
A C2-symmetric chiral spirocyclic diol aza-SPINOL containing a spirooxindole scaffold has been designed, synthesized, and optically resolved. The product could be synthesized on gram scale in an overall yield of 22%. Moreover, elaborations of aza-SPINOL to other chiral ligands as well as the preliminary investigation of the related bisphosphine ligand in the desymmetrization of bisallylic amide were reported.
Cu-Catalyzed Chemoselective Reduction of N-Heteroaromatics with NH3·BH3 in Aqueous Solution
Gao, Chao,Xuan, Qingqing,Song, Qiuling
supporting information, p. 2504 - 2508 (2021/07/31)
An efficient catalytic system was successfully developed on reduction of N-heteroaromatics with H3N?BH3 as hydrogen source in CuSO4 solution, featuring excellent chemoselectivity as well as very broad functional group tolerance. Various challenging substrates, such as OH-, NH2-, Cl-, Br-, etc., contained quinolines, quinoxalines, 1,5-naphthyridines and quinazolines were all reduced smoothly. Mechanistic studies suggested that [Cu-H] intermediate might be generated from NH3?BH3, which was believed to form with H3N?BH3 in CuSO4 solution.
NERVE-SPECIFIC FLUOROPHORE FORMULATIONS FOR DIRECT AND SYSTEMIC ADMINISTRATION
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Paragraph 0209-0210, (2020/03/02)
Nerve-specific fluorophore formulations for direct or systemic administration are described. The formulations can be used in fluorescence-guided surgery (FGS) to aid in nerve preservation during surgical interventions.