Abstract: Aspect of the present application relates to process for the preparation of crystalline form of Apalutamide and process for the preparation of Apalutamide in the presence of neutralizing agent selected from triethylsilylchloride, trimethylsilyl chloride, zinc chloride, aluminium chloride, iron chloride, sodium chloride, acetic acid, ammonium chloride or mixture thereof followed by treating with acid to obtain Apalutamide.

Abstract: The present invention provides optically pure (S)-(+)-N-methyl-3-(1-naphthaleneoxy)-3-(2-thienyl)propanamine, a compound of formula (I), and optically pure (S)-isomer of compound of formula 4, wherein R1 and R2 both are methyl or R1 is methyl and R2 is benzyl or substituted benzyl group and process for preparation thereof. Formula (I) and (IV). In another aspect the present invention provides a process for preparation of an acid addition salt of compound of formula (I).

Abstract: The present invention provides a process for preparation of 1-[9H-carbazol-4-yloxy]-3-[{2-(2-(methoxy)phenoxy)-ethyl}-amino]-propan-2-ol, a compound of formula 1 in racemic form or in the form of optically active R or S enantiomer or its pharmaceutically acceptable salt, comprising, reacting 4-(oxiranylmethoxy)-9H-carbazole, a compound of formula (2) or the R or S enantiomer thereof with a compound of formula (5), wherein R1 is benzyl or substituted benzyl group, in an aprotic organic solvent in presence of a catalyst to obtain a compound of formula (6), or the R or S enantiomer thereof, wherein R1 is as defined above. The resultant compound of formula (6) is subjected to debenzylation reaction by catalytic hydrogenation to obtain the compound of formula (1), if desired converting the resultant compound of formula (1) to a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides a novel process for preparation of trans-3-ethyl 2,5-dihydro-4-methyl-N-[2-[4-[[[[(4-methyl cyclohexyl)amino]carbonyl]amino]sulfonyl]phenyl]ethyl]-2-oxo-1H-pyrrole-1-carboxamide via the novel intermediate compounds of formula 3.