Add time:07/26/2019         Source:sciencedirect.com

Stereochemistry of reduction of the diastereomerically pure N-tosyl 2-benzoyl-1,3-oxazines prepared from D-glucose was investigated with various reducing agents. It was found that the stereochemical outcome is consistent with the Cram's chelation model where the ring oxygen atom is involved in chelation, not the tosyl oxygen as in the 5-membered oxazolidines.

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