Organotin‐Catalyzed Highly Regioselective Thiocarbonylation of Nonprotected Carbohydrates and Synthesis of Deoxy Carbohydrates in a Minimum Number of Steps
Nonprotectedcarbohydrates: The catalytic regioselectivethiocarbonylation of carbohydrates by using organotin dichloride under mild conditions was demonstrated. The reaction afforded various deoxy saccharides in high yields and excellent regioselectivity in a minimumnumber of steps. The regioselectivity of the thiocarbonylation is attributed to the intrinsic character of the carbohydrates based on