Patent ID: 6933410

Claim:
A process for preparing 5,6-diethyl-2,3-dihydro-1H-inden-2-amine comprising: (i) protecting the amino group of 2-aminoindan with an acyl group in the presence of an organic solvent to form a compound of Formula (I) (ii) reacting the compound of Formula (I) with acetyl halide in the presence of a Lewis acid to form a compound of Formula (II) (iii) treating the compound of Formula (II) with a reducing agent in the presence of a catalyst and an organic solvent to form a compound of Formula (III) (iv) reacting the compound of Formula (III) with acetyl halide in the presence of a Lewis acid to form a compound of Formula (IV) (v) treating the compound of Formula (IV) with a reducing agent in the presence of a catalyst and an organic solvent to form a compound of Formula (V) (vi) hydrolyzing the compound of Formula (V) in the presence of a base to form 5,6-diethyl-2,3-dihydro-1H-inden-2-amine of Formula (VI) wherein R is selected from the group consisting of an alkyl, aryl, alkoxy, alkenyl, cycloalkyl, benzocycloalkyl, cycloalkylalkyl, aralkyl, heterocyclic, heteroaralkyl and haloalkyl.