tert-Butyl isocyanate → HCID 66585082, compound

Participants

Reaction Steps

To a solution of 34 g (119 mmol) of 6-chloro-7-phenyl-1,2,3,4-tetrahydropyrrolo[1,2-a]pyrazine-8-carbonitrile in 300 ml of dichloromethane are added 16.3 ml (143 mmol) of tert-butyl isocyanate (CAS1609-86-5). After stirring for 4 hours at room temperature, the solvent is evaporated off under reduced pressure to give an orange-coloured solid, which is crystallized from acetonitrile to give 40.0 g of N-tert-butyl-6-chloro-8-cyano-7-phenyl-3,4-dihydropyrrolo[1,2-a]pyrazine-2(1H)-carboxamide in the form of a yellow powder after filtering off and drying.

Provenance & Evidence