23933-83-7Relevant academic research and scientific papers
Synthesis method and application of 2-amino-1-(4-chlorphenyl) propane-1-ol
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Paragraph 0013; 0033; 0037-0038; 0042-0043; 0047-0048; 0052, (2021/11/21)
The invention relates to a method for synthesizing a hexythiazox key intermediate and application of the hexythiazox key intermediate. The synthesis method comprises the following steps: 1) carrying out oxidation reaction on 1-(4-chlorphenyl) propyl-1-ene-2-yloxytrimethylsilane and m-chloroperoxybenzoic acid to generate an intermediate I; 2) adding K2CO3 into the intermediate I, and hydrolyzing to obtain 1-(4-chlorphenyl)-1-hydroxypropane-2-one; 3) adding TiCI4/NH4CL into 1-(4-chlorphenyl)-1-hydroxypropane-2-one, and carrying out a reaction to obtain an intermediate II; and 4) adding sodium cyanoborohydride into the intermediate II, and carrying out reduction to obtain 2-amino-1-(4-chlorphenyl) propane-1-ol. According to the invention, the prepared2-amino-1-(4-chlorphenyl) propane-1-ol is as high as 95.8% in yield, low in cost, as high as 98.5% in purity and good in quality; and the 2-amino-1-(4-chlorphenyl) propane-1-ol prepared by the method disclosed by the invention is used for preparing hexythiazox.
An efficient reduction protocol for the synthesis of β-hydroxycarbamates from β-nitro alcohols in one pot: a facile synthesis of (-)-β-conhydrine
Saikia, Partha Pratim,Baishya, Gakul,Goswami, Abhishek,Barua, Nabin C.
scheme or table, p. 6508 - 6511 (2009/04/06)
An efficient and practical one-pot protocol for the reduction of β-nitro alcohols to their corresponding N-(tert-butoxycarbonyl) amino alcohols using Zn-NH4Cl in aqueous methanol is described. Other reducible groups such as ketones and isolated double bonds remained intact. This methodology allows a short synthesis of (-)-β-conhydrine to be achieved.
Process for producing optically active 3,3,3-Trifluoro-2-Hydroxy-2-Methylpropionic acid, and salt thereof
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, (2008/06/13)
There are disclosed are a diastereomer salt of formula (1): a process for producing the same, a process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid of formula (2′): a novel optically active amine compound of formula (4): a novel optically active amine compound of formula (8): an imine compound of formula (7) or (11):
