
Phosphorus, Sulfur and Silicon and the Related Elements p. 71 - 81 (2000)
Update date:2022-08-05
Topics:
Firouzabadi, Habib
Iranpoor, Naser
Shaterian, Hamid Reza
Varions types of carboxylic acids can be converted effectively to their corresponding TBDMS and TIPS esters using TBDMSCI and TIPSCI in the presence of imidazole under solvent-free conditions. The advantage of this modified method in comparison with that reported by Corey is the elimination of DMF, which eliminates aqueous work-up. The method is not a time-consuming process and the reactions proceed spontaneously. By this method, absolute chemoselectivity for the protection of carboxylic acid functions in the presence of 2°, 3° hydroxyl groups are observed.
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