1,1'-Carbonyldiimidazole → HCID 10217266, compound

Participants

Reaction Steps

The title compound was prepared according to the procedure of Example 2 using carbonyldiimidazole (1.0 g, 6.2 mmol), 3-methoxy-2,5-thiophenedicarboxylic acid (0.5 g, 2.5 mmol), and piperonylamine (0.85 g, 5.6 mmol) to afford 1.05 g of 3-methoxy-thiophene-2,5-dicarboxylic acid bis-[(1,3-benzodioxol-5-ylmethyl)-amide]. Recrystallization of a sample from dimethylformamide gave product with a mp 191-195° C.

Provenance & Evidence