1,1'-Carbonyldiimidazole → HCID 10567719, compound

Participants

Reaction Steps

Same procedure followed as described in Example 5. The following amounts were used: 1H-indazole-3-carboxylic acid (1.49 g, 9.2 mmol), 1,1'-carbonyldiimidazole (1.49 g, 9.2 mmol) and the intermediate from Preparation 5 (1.62 g, 9.2 mmol). The ethyl acetate extracts were evaporated to a solid. Addition of cyclohexane and filtration provided 2.73 g of solid. Mass spectrum, m+ =321.

Provenance & Evidence