936116-22-2Relevant academic research and scientific papers
PROCESS FOR THE PREPARATION OF 3-[(1R,2R)-3-(DIMETHYLAMINO)-1-ETHYL-2-METHYLPROPYL]-PHENOL
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, (2016/02/29)
A process for the preparation of a compound of formula (I) and of a acid salt (T) wherein R1 is selected from the group consisting of alkyl, aryl, cycloalkyl, heteroalkyl, heteroaryl and heterocycloalkyl, R2 and R3, are, independently of each other, selected from the group consisting of alkyl, aryl, cycloalkyl, heteroalkyl, heteroaryl and heterocycloalkyl, R4, R5, R6 and R7, are independently of each other, selected from the group consisting of H, alkyl, aryl, cycloalkyl, heteroalkyl, heteroaryl and heterocycloalkyl, and wherein the acid salt is a 2,3-Ditoluoyl tartaric acid salt, 2,3-Dibenzoyl tartaric acid salt, 2,3-Dianisoyl tartaric acid salt, 2,3-Dibenzoyl tartaric acid mono(dimethylamide) salt or a mixture of two or more thereof, wherein the tartaric acid salt (T) of the compound of formula (I) contains at least 90 % by weight of the tartaric salt of the compound of formula (Ia) based on the total weight of the acid salt of the compound of formula (I).
PROCESS FOR PREPARING SUBSTITUTED PHENYLALKANES
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, (2016/01/25)
The invention provides methods for preparing substituted phenylalkanes. In particular, the processes comprise reacting a phenyl boronic compound with an α-β unsaturated carbonyl-containing compound via an asymmetric 1,4-addition reaction. The processes may be useful in the synthesis of tapentadol.
PROCESS FOR THE PREPARATION OF 1-PHENYL-3-DIMETHYLAMINOPROPANE DERIVATIVES
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Page/Page column 45, (2011/07/30)
A process for the preparation of 1-phenyl-3-dimethylaminopropane derivatives of formula (I) and its pharmaceutically acceptable salts thereof from cyano intermediate of formula (II), wherein R1 can be selected from -OR2, halo, -CH2OR2, -SR2, -SOR2, SO2R2, -SO3H, -NO2, -NR2R2', -CONR2R2', carboxylic esters, sulfonate esters or phosphate esters, R2 and R2' can be same or different, and can be selected from hydrogen, alkyl, aryl, aralkyl, heteroaryl, -COR2", -P03(R2")2 wherein R2" can be selected from alkyl, aryl, aralkyl, heteroaryl and the like.
