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・ Metis Classification
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・ Methylotroph
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Methylphosphonic acid
・ Methylphosphonic acid dichloride
・ Methylphosphonyl difluoride
・ Methylphosphothioglycerate phosphatase
・ Methylprednisolone
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・ Methylrhenium trioxide
・ Methylscopolamine bromide
・ Methylselenocysteine
・ Methylserotonin
・ Methylsilane
・ Methylsterol monooxygenase


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Methylphosphonic acid : ウィキペディア英語版
Methylphosphonic acid

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Methylphosphonic acid is an organophosphorus compound with the chemical formula. CH3P(O)(OH)2. The phosphorus center is tetrahedral and is bonded to a methyl group, two OH groups and an oxygen. Methylphosphonic acid is a white, non-volatile solid that is poorly soluble in organic solvent but soluble in water and common alcohols.〔(【引用サイトリンク】url=http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=13818 )
==Preparation==
Methylphosphonic acid can be prepared via the Michaelis-Arbuzov reaction from triethylphosphite:
:CH3Cl + P(OC2H5)3 → CH3PO(OC2H5)2
The dialkylphosphonate is then treated with chlorotrimethylsilane:
:CH3PO(OC2H5)2 + 2 Me3SiCl → CH3PO(OSiMe3)2 + 2 ClC2H5
The siloxyphosphinate is then hydrolyzed:
:CH3PO(OSiMe3)2 + 2H2O → CH3PO(OH)2 + 2 HOSiMe3


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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