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|Section2= |Section3= }} Polymethylhydrosiloxane (PMHS) is a polymer with the general structure -(CH3(H)Si-O)-. It is used in organic chemistry as a mild and stable reducing agent easily transferring hydrides to metal centers.〔J. M. Lavis, R. E. Maleczka, Jr. "Polymethylhydrosiloxane" Encyclopedia of Reagents for Organic Synthesis 2003, John Wiley & Sons. 〕 A variety of related materials are available under the following CAS registry numbers 9004-73-3, 16066-09-4, 63148-57-2, 178873-19-3. These include the tetramer ((MeSiHO)4), copolymers of dimethysiloxane and methylhydrosiloxane, and trimethylsilyl terminated materials. This material is prepared by the hydrolysis of methyldichlorosilane: :n MeSiHCl2 + n H2O → (MeSiHO)n + 2n HCl The related polymer polydimethylsiloxane (PDMS) is made similarly, but lacking Si-H bonds, it exhibits no reducing properties. Illustrative of its use, PMHS is used for in situ conversion of tributyltin oxide to tributyltin hydride:〔 〕 : 2"(MeSiH)" + (Bu3Sn)2O → "(Me2Si2O" + 2 Bu3SnH ==References== 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「polymethylhydrosiloxane」の詳細全文を読む スポンサード リンク
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