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Phosphite esters may be used as reducing agents in more specialised cases. For example, triethylphosphite is known to reduce certain hydroperoxides to alcohols formed by autoxidation [7] (scheme). In this process the phosphite is converted to a phosphate ester. This reaction type is also utilized in the Wender Taxol total synthesis.
When aliphatic alcohols are used the HCl by-product can react with the phosphate esters to give organochlorides and a lower ester. O=P(OR) 3 + HCl → O=P(OR) 2 OH + RCl. This reaction is usually undesirable and is exacerbated by high reaction temperatures. It can be inhibited by the use of a base or the removal of HCl through sparging.
Tris(2,4-di-tert-butylphenyl)phosphite is an organophosphorus compound with the formula [(C 4 H 9) 2 C 6 H 3 O] 3 P. This white solid is a widely used stabilizer in polymers where it functions as a secondary antioxidant. It also reduces discoloration (yellowing) of plastics.
The nerve gas agent sarin, containing both C–P and F–P bonds, is a phosphonate. [citation needed] Phosphinates feature two P–C bonds, with the general formula R 2 P(=O)(OR'). A commercially significant member is the herbicide glufosinate. Similar to glyphosate mentioned above, it has the structure CH 3 P(O)(OH)CH 2 CH 2 CH(NH 2)CO 2 H.
Dimethyl methylphosphonate can be prepared from trimethyl phosphite and a halomethane (e.g. iodomethane) via the Michaelis–Arbuzov reaction. [2]Dimethyl methylphosphonate is a schedule 2 chemical as it may be used in the production of chemical weapons.
Triethyl phosphite (TEP) is an organophosphorus compound, specifically a phosphite ester, with the formula P(OCH 2 CH 3) 3, often abbreviated P(OEt) 3. It is a colorless, malodorous liquid. It is a colorless, malodorous liquid.
Halloween may be six months away, but Home Depot unveiled some of its latest and greatest decorations, including a dog pal for Skelly, the brand’s gigantic and popular 12-foot skeleton.
VX is an odorless and tasteless [13] [14] chiral organophosphorous chemical with a molecular weight of 267.37 g/mol. [15] Under standard conditions it is an amber-coloured liquid with a boiling point of 298 °C (568 °F), and a freezing point of −51 °C (−60 °F). [16]
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