posted on 2009-12-08, 16:23authored byCaroline D. L. Baker, John Fawcett, Christopher D. Insley, Derek S. Messenger, Claire L. Newland, Helen L. Overend, Anup B. Patel, Mufakhrul Shah, Bhavna Vara, Davinder Virdee, Bernard J. Rawlings
6-Benzoyl-3,4-dihydro-(2H)-pyran will protect 1,2,3-triols such as glycerol as their corresponding spiro-[5-phenyl-3,6,8-trioxabicyclo[3.2.1]octane-4,2′-tetrahydropyran]s and 1,2,4-triols (less efficiently) as the corresponding trioxabicyclo[3.2.2]nonanes; the hexol mannitol is converted into the corresponding bis-protected product.