14467-32-4Relevant articles and documents
Asymmetric Reduction of α-Ketoimines with Oxazaborolidine Catalysts: A Novel, Practical Approach to Chiral Arylethanolamines
Hong, Yaping,Gao, Yun,Nie, Xiaoyi,Zepp, Charles M.
, p. 5551 - 5554 (1994)
Asymmetric borane reduction of α-ketoimines with oxazaborolidine catalysts has been studied.The ee's of the resulting arylethanolamines are uo to 93percent using 20 molpercent of the catalyst.
Efficient Synthesis of 2-Amino-1-Arylethanols Through a Lewis Base-Catalyzed SiCl4-Mediated Asymmetric Passerini-Type Reaction
Ayad, Tahar,Gernet, Aurélie,Pirat, Jean-Luc,Ratovelomanana-Vidal, Virginie,Virieux, David
supporting information, p. 6497 - 6500 (2020/10/30)
We herein report, a practical and efficient strategy for the synthesis of enantiomerically enriched 2-amino-1-arylethanols, a structural motif commonly encountered in the family of β-adrenergic blockers or agonists, through a Lewis base-catalyzed SiClsub
Method for preparing beta-arylamino alcohol drugs such as tulobuterol, clorprenaline, dichloroisoprenaline and sotalol
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Paragraph 0088; 0106; 0107; 0108, (2019/08/30)
The invention provides a method for preparing beta-arylamino alcohol drugs such as tulobuterol, clorprenaline, dichloroisoprenaline and sotalol. The beta-arylamino alcohol drugs have a chemical structure represented by a formula 4 shown in the description. The method comprises the following steps: (1) reacting arylethanone represented by a formula 1 shown in the description with a halogenating agent and sulfoxide to obtain arylglyoxal represented by a formula 2 shown in the description and or 1,1-dihydroxyarylethanone represented by a formula 3 shown in the description; and (2) performing a nucleophilic addition reaction on the arylglyoxal represented by the formula 2 and/or the 1,1-dihydroxyarylethanone represented by the formula 3 and an amine compound having a chemical formula of R1-NH2, and performing a reductive amination reaction in the presence of a reducing agent to obtain the beta-arylamino alcohol drugs.