958029-46-4Relevant articles and documents
Preparation method of Anacetrapib key intermediate
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, (2017/04/25)
The invention relates to a preparation method of an Anacetrapib key intermediate 1-bromo-4-fluoro-5-isopropyl-2-methoxybenzene. The preparation method comprises the following steps: hydrolyzing an initial raw material 2,4-difluoronitrobenzene to obtain 4-fluoro-2-hydroxynitrobenzene, methylating 4-fluoro-2-hydroxynitrobenzene to obtain 4-fluoro-2-methoxynitrobenzene, carrying out nitro group reduction to form 4-fluoro-2-methoxyaniline, carrying out diazo bromination to obtain 4-fluoro-2-methoxybromobenzene, carrying out Friedel-Crafts acylation to obtain 2-fluoro-4-methoxy-5-bromoacetophenone, carrying out a condensation reaction to obtain 2-(2-fluoro-4-methoxy-5-bromophenyl)-propane-2-ol, carrying out an elimination reaction to obtain 1-bromo-4-fluoro-2-methoxy-5-(1-methylvinyl)benzene, and hydrogenating the 1-bromo-4-fluoro-2-methoxy-5-(1-methylvinyl)benzene to obtain 1-bromo-4-fluoro-5-isopropyl-2-methoxybenzene. The preparation method has the advantages of realization of low cost, good quality and high yield of the above final product, mild reaction conditions, simplicity in operation, and easiness in industrialization.
Synthesis of intermediates for preparing anacetrapib and derivates thereof
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, (2012/07/03)
The present invention relates to the field of organic chemistry, more specifically to the synthesis of intermediate compounds which can be used in the synthesis of pharmaceutically active agents such as anacetrapib or derivatives thereof.
Preparative scale synthesis of the biaryl core of anacetrapib via a ruthenium-catalyzed direct arylation reaction: Unexpected effect of solvent impurity on the arylation reaction
Ouellet, Stephane G.,Roy, Amelie,Molinaro, Carmela,Angelaud, Remy,Marcoux, Jean-Francois,OShea, Paul D.,Davies, Ian W.
, p. 1436 - 1439 (2011/04/26)
In this report, we disclose our findings regarding the remarkable effect of a low-level impurity found in the solvent used for a ruthenium-catalyzed direct arylation reaction. This discovery allowed for the development of a robust and high-yield arylation protocol that was demonstrated on a multikilogram scale using carboxylate as the cocatalyst. Finally, a practical, scalable, and chromatography-free synthesis of the biaryl core of Anacetrapib is described.(Figure Presented)