Process for the preparation of 2,3,4,3',4'-penta-o-acetyl...

Details Process for the preparation of 2,3,4,3',4'-penta-o-acetyl... Process for the preparation of 2,3,4,3',4'-penta-o-acetyl...

C - Chemistry, Metallurgy

07

H

260/233

C07H 5/02 (2006.01) C07H 13/04 (2006.01)

Patent

CA 1300132

ABSTRACT 2.3,4,3',4'-penta-0-acetyl sucrose (4-PAS), a key intermediate in the preparation of sucralose. is prepared by the selective removal of trityl groups from 6,1',6'-tri-0-trityl-penta-0-acetyl sucrose (TRISPA) in which a catalytic amount of an aralkyl chloride or hydrogen chloride is added to a solution of TRISPA is an inert organic solvent is hydrogenated in the presence of a hydrogenolysis catalyst such a platinum or palladium.

547019

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