The one-pot reduction of alpha-alkyl-beta-ketonitriles to anti gamma-amino alcohols can be efficiently performed by borane/dimethyl sulfide complex in the presence of cerium chloride as Lewis acid. Selectivities are slightly worse than monoreduction but this drawback is overcome by much better yields. (C) Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002.
Boiko,I.P. et al., Journal of Organic Chemistry USSR (English Translation), 1976, vol. 12, # 1, p. 76 - 84
作者:Boiko,I.P. et al.
DOI:——
日期:——
TAMPER RESISTANT FORMULATION OF EPHEDRINE AND ITS DERIVATIVES
申请人:GRÜNENTHAL GMBH
公开号:US20180042868A1
公开(公告)日:2018-02-15
A pharmaceutical dosage form having a breaking strength of at least 300 N and comprising an ephedrine component selected from the group consisting of ephedrine, pseudoephedrine and the physiologically acceptable salts thereof, wherein the weight content of the ephedrine component is within the range of from 0.1 to 60 wt.-%, relative to the total weight of the pharmaceutical dosage form.
Koga,K.; Yamada,S.-I., Chemical and pharmaceutical bulletin, 1972, vol. 20, # 3, p. 526 - 538