N-tert-butyl-2-piperazin-1-ylacetamide;dihydrochloride

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-{4-[(4S,5R)-4,5-Bis-(4-chloro-phenyl)-2-(3-ethoxy-thiophen-2-yl)-4,5-dihydro-imidazole-1-carbonyl chloride was reacted with N-tert-butyl-2-piperazin-1-yl-acetamide dihydrochloride to give 2-{4-[(4S,5R)-4,5-bis-(4-chloro-phenyl)-2-(3-ethoxy-thiophen-2-yl)-4,5-dihydro-imidazole-1-carbonyl]-piperazin-1-yl}-N-tert-butyl-acetamide in an analogous manner as described in example 1. LR-MS: 642.3 [(M+H)+]

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: N-tert-butyl-2-piperazin-1-yl-acetamide dihydrochloride was prepared from 1-tert-butyloxycarbonyl-piperazine, chloroacetylchloride and N-tert-butylamine in an analogous manner as described for the preparation of N-(2-methoxy-1-methyl-ethyl)-2-piperazin-1-yl-acetamide dihydrochloride (example 40).

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-{4-[(4S,5R)-4,5-Bis-(4-chloro-phenyl)-2-(3-ethoxy-thiophen-2-yl)-4,5-dihydro-imidazole-1-carbonyl chloride was reacted with N-tert-butyl-2-piperazin-1-yl-acetamide dihydrochloride to give 2-{4-[(4S,5R)-4,5-bis-(4-chloro-phenyl)-2-(3-ethoxy-thiophen-2-yl)-4,5-dihydro-imidazole-1-carbonyl]-piperazin-1-yl}-N-tert-butyl-acetamide in an analogous manner as described in example 1. LR-MS: 642.3 [(M+H)+]

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: N-tert-butyl-2-piperazin-1-yl-acetamide dihydrochloride was prepared from 1-tert-butyloxycarbonyl-piperazine, chloroacetylchloride and N-tert-butylamine in an analogous manner as described for the preparation of N-(2-methoxy-1-methyl-ethyl)-2-piperazin-1-yl-acetamide dihydrochloride (example 40).