ES446565A1 - A procedure for the preparation of 1, 1- difenyl-2-hydroxy-3-aminopropan derivatives. (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of 1, 1- difenyl-2-hydroxy-3-aminopropan derivatives. (Machine-translation by Google Translate, not legally binding)
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Beecham Group PLC
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Beecham Group PLC
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Publication of ES446565A1publicationCriticalpatent/ES446565A1/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Acyclic And Carbocyclic Compounds In Medicinal Compositions
(AREA)
Abstract
A process for the preparation of 1,1-diphenyl-2-hydroxy-3-aminopropane derivatives of the formula: **(See formula)** where R1 is a hydrogen atom or a COR9 group where R9 is an alkyl or phenyl group; R3 is a hydrogen atom or a methyl, ethyl or benzyl group; R7 is a hydrogen atom when R8 is a fluorine, chlorine or bromine atom or a methyl, trifluoromethyl or methoxy group; and R8 is a hydrogen atom when R7 is a fluorine, chlorine or bromine atom or a methyl, trifluoromethyl or methoxy group; the process of which is to reduce with a complex metal hydride or with hydrogen and a transition metal catalyst a compound of the formula: **(See formula)** where R3, R7 and R8 are as defined above, to give a compound of formula: **(See formula)** and then, if desired, acylating the hydroxyl group. (Machine-translation by Google Translate, not legally binding)
ES446565A1973-10-131976-03-31A procedure for the preparation of 1, 1- difenyl-2-hydroxy-3-aminopropan derivatives. (Machine-translation by Google Translate, not legally binding)
ExpiredES446565A1
(en)
Procedure for the preparation of 7-chlorine-1,2-dihydro-5-phenyl - 1,4-benzodiazepin-2-onas. (Machine-translation by Google Translate, not legally binding)