Hydrochloric Acid → (S)-2-(6-cyclopropoxy-2,3-dihydro-1H-3a-aza-cyclopenta[a]inden-8-yl)-1-methyl-ethylamine hydrochloride

Participants

Reaction Steps

A solution of 11.81 g (S)-[2-(6-cyclopropoxy-2,3-dihydro-1H-3a-aza-cyclopenta[a]inden-8-yl)-1-methyl-ethyl]-carbamic acid tert-butyl ester in 120 mL of a 2.26 M solution of hydrochloric acid in ethyl acetate was stirred at room temperature for 2 h. The resulting suspension was diluted with 120 mL ethyl acetate and the product collected by filtration, washed with ethyl acetate and dried to constant weight under high vacuum to yield 8.65 g (S)-2-(6-cyclopropoxy-2,3-dihydro-1H-3a-aza-cyclopenta[a]inden-8-yl)-1-methyl-ethylamine hydrochloride as white crystals melting at 214-217° C.

Provenance & Evidence