The present invention relates to a novel process for preparation of Suvorexant. The present invention also provides novel intermediates that may be used for the preparation of Suvorexant.

The present invention relates to a novel process for the preparation of Selexipag and its intermediates and also relates to an improved process for the preparation of Selexipag compound of formula (I).

A new method for the preparation of Cinacalcet by treating (R)-1-naphthyl ethylamine with an aromatic aldehyde to form (1R)-1-(2-naphthyl)-N-(aryl methylene)ethanamine derivative which is further treated with 1 -(3-halopropyl)-3-(trifluoromethyl)benzene of formula (V) to obtain an iminiunm salt and followed by hydro...

A new method for the preparation of solifenacin by reacting quinuclidin-3-ol and bis (p-nitro phenyl) carbonate to form (3/0-l-azabicycIo["2.2.2]oct-3-yl 4-nitrophenyl carbonate of formula (IV); and treating (3/?)-l-azabicyclo[2.2.2]oct-3-yl 4-nitrophenyl carbonate of formula (IV) with (hS")-l-phenyl-1, 2, 3. 4-tetr...

The present invention describes novel processes for preparation of 4-isopropylamino-butan-1-ol, a Selexipag precursor of formula (1).