Osmium oxide carried by hydrophilic polymer

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing

Reexamination Certificate

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C502S172000, C502S326000, C568S426000, C568S896000, C568S900000

Reexamination Certificate

active

07122499

ABSTRACT:
A carrier for carrying an osmium oxide comprising an aromatic polyolefin polymer having a group shown by the general formula [1] as a substituent on the aromatic ring of said polyolefin polymer:in-line-formulae description="In-line Formulae" end="lead"?—A′—O(—A—O)n—R[1]in-line-formulae description="In-line Formulae" end="tail"?(wherein A is an alkylene group; A′ is a direct link or an alkylene group; R is an aryl group; and n is an integer of 1 to 10), an osmium oxide carried by the carrier for carrying an osmium oxide and a method for producing the osmium oxide carried by said carrier are disclosed. Since the osmium oxide carried by the carrier of the present invention has a hydrophilic group, in an oxidation reaction and an asymmetric oxidation reaction, particularly in a heterogeneous solvent system, the osmium oxide carried by the carrier of the present invention enables to produce a diol compound easily and in a high optical yield.

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