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Osmium(VIII) Oxide, Microencapsulated

for Organic Synthesis
Manufacturer :
FUJIFILM Wako Pure Chemical Corporation
Storage Condition :
Keep at RT.
CAS RN® :
20816-12-0
Molecular Formula :
O4Os
Molecular Weight :
254.23
GHS :
  • Structural Formula
  • Label
  • Packing
SDS
Comparison
Product Number
Package Size
Price
Inventory
Distributor
153-02081
Barcode No
4987481377417
1g
List Price
172.00 USD

In stock in Japan

Document

SDS
Product Specification Sheet
Spectral Data
Certificate of Analysis
Calibration Certificate

Overview

Osmium oxide (VIII) is the most reliable reagent for the dihydroxylation of olefins to give the corresponding diols. Although a wide variety of processes have gained acceptance in this dihydroxylation, few fruitful industrial applications have been accomplished, probably because OsO4 is highly toxic, expensive, volatile, and cannot be recovered completely.
To overcome these problems, we have commercialized osmium oxide (VIII) microencapsulated compound with polystyrene using microencapsulation technology developed by Kobayashi et al. By using this microencapsulated OsO4 (MC OsO4) in the combination with a cooxidant such as NMO (N-methylmorpholine-N-oxide) etc., it is possible to use it repeatedly in catalytic amount. In addition, volatile properties are suppressed, so little irritating odor makes it much easier to handle.

Features

  • Repeatedly reusable
  • Easily separable from reactants
  • Reduction of toxic and irritating odor by volatility suppression
  • No OsO4 elution from polystyrene resin
  • OsO4 content: ca 10%

Application

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References
  • Nagayama , S., Endo ,M., and Kobayashi , S.:J.Org.Chem.,63 (18), 6094 (1998).
  • S. Kobayashi, M. Endo, S. Nagayama : J. Org. Chem., 63, 6094 (1998).
  • S. Kobayashi, T. Ishida, R. Akiyama : Org. Lett., 3, 2649(2001).

Overview / Applications

Outline This product is for research use only. Do not administer it to human.

[Features]
(1) Readily recoverable and reusable by filtration
(2) High catalytic activity
(3) Utilizing patented technology that reduces release of catalyst
from resin
(4) Environmentally friendly

Osmium(VIII) oxide is widely used for the dihydroxylation of olefins to give the corresponding diols,
although it is required to handle the oxide with special cares due to very
toxic vapor generation.
Osmium(VIII) oxide, Microencapsulated is osmium(VIII) oxide enclosed
with polystyrene according to the microencapsulation technology developed
by Kobayashi, et al, which reduces volatilization of the Osmium(VIII) oxide, thus,
allowing its repeated use as a catalyst with combination use of NMO ( N-methylmorpholine-N-oxide) and the like without hazardous operations.

Appearance: Black mass
Content of OsO4: approx. 10 %.
Specific gravity: 5.10

Reference: Nagayama, S. et al., J. Org. Chem.,
63, 6094 (1998)

Property

Appearance Gray - black, mass
Melting Point 40 - 43 degrees C
Boiling Point about 131 degrees C
Flash Point 4 degrees C
Specific Gravity 5.10

Manufacturer Information

Alias

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Author : Y. Higuchi

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