Potassium Carbonate → Bis(2-methylpropyl) dicarbonate
Reaction equation
Cl[C:2]([O:4][CH2:5][CH:6]([CH3:8])[CH3:7])=[O:3].[C:9](=[O:12])([O-:11])[O-:10].[K+].[K+]>C(#N)C>[C:2]([O:12][C:9]([O:11][CH2:5][CH:6]([CH3:8])[CH3:7])=[O:10])([O:4][CH2:5][CH:6]([CH3:8])[CH3:7])=[O:3]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 40 °C
Procedure
Isobutyl chloroformate (136.76 g, 1.0 mol.) was added dropwise to a stirred mixture of powered, anhydrous potassium carbonate (77 g, 0.56 mol) in acetonitrile at such a rate as to maintain a reaction temperature of 40° C. The reaction mixture was stirred for six (6) hours at ambient temperature and then allowed to stand overnight prior to work-up. The crude product was purified by vacuum distillation, and the fraction collected between 58° and 62° C. at 0.05-0.10 mmHg was found to be di-isobutyl dicarbonate. YIELD=86.93 g=80%.