Ammonia → HCID 20069465, compound

Participants

Reaction Steps

In a pressurised reactor, 7.0 g of 5,6-dihydro-5,5-dimethyl-4H-cyclopenta[b]thiophen-4-one are dissolved in a mixture of 100 ml of tetrahydrofuran and 27 g of liquid ammonia. 1.4 g of a moist sulfided 5% platinum/carbon catalyst are added to this mixture. The reactor is filled with hydrogen gas up to a pressure of 100 bar and heated to from +175° C. to +180° C. When the hydrogenation has ceased, the catalyst is filtered off, the filtrate is concentrated and the residue distilled in a bulb tube, yielding 5.4 g of 4-amino-5,6-dihydro-5,5-dimethyl-4H-cyclopenta-[b]thiophene having a melting point of +80° C. at 0.08 mbar.

Provenance & Evidence