Transformation of sugars, while maintaining the intrinsic stereochemical structure, is desirable. However, such a transformation requires multistep synthesis with protection and deprotection of the OH groups. Herein, a new method for selective transformation of sugar derivatives into chiral building blocks and a diol synthon, with retention of the intrinsic configuration (stereo- and regioselectively), is demonstrated. The method is based on the selective recognition of cis-vicinal OH groups in sugars and leads to the one-pot removal of the cis-vicinal OH groups, without protection of OH groups (except the OH group of the hemiacetal group), over a heterogeneous CeO -supported ReO and Pd (ReO -Pd/CeO ) catalyst by using H as a reducing agent.

Modification of Ru/SiO with metal oxides (MoO, WO, and ReO) improved the activity and selectivity in the hydrogenation of 3-nitrostyrene to 3-aminostyrene under mild conditions such as 0.3 MPa H, 303 K, and no solvent. Ru-MoO/SiO(Mo/Ru = 1/2) catalyst was applicable to various substituted nitroarenes, providing the corresponding substituted aminoarenes in high yields (85-99%).

Transformation of sugars,w hile maintaining the intrinsic stereochemical structure,i sd esirable.H owever,s uch at ransformation requires multistep synthesis with protection and deprotection of the OH groups.Herein, anew method for selective transformation of sugar derivatives into chiral building blocks and ad iol synthon, with retention of the intrinsic configuration (stereo-and regioselectively), is demonstrated. The method is based on the selective recognition of cis-vicinal OH groups in sugars and leads to the one-pot removal of the cis-vicinal OH groups,w ithout protection of OH groups (except the OH group of the hemiacetal group), over aheterogeneous CeO 2 -supported ReO x and Pd (ReO x -Pd/CeO 2 ) catalyst by using H 2 as ar educing agent.