abstract |
The invention relates to carbonyldiimidazoles having the general formula (Ia), (Ib), (Ic) or mixtures thereof. In these formulas R {sup, 1} represents a C {sub, 1} -C {sub, 4} alkyl radical and R {sup, 2} is a hydrogen or a methyl radical. The invention also relates to tertbutyl esters derived from these carbonyldiimidazoles. |