18279-83-9

Basic information

• Product Name: Methylphosphonic acid bis(trimethylsilyl) ester
• Synonyms: Methylphosphonic acid bis(trimethylsilyl) ester
• CAS NO: 18279-83-9
• Molecular Formula: C₇H₂₁O₃PSi₂
• Molecular Weight: 240.38
• Mol File: 18279-83-9.mol
• Article Data: 6

Chemical Properties

• Boiling Point: 83 °C(Press: 10 Torr)
• Appearance: /
• Density: 0.952±0.06 g/cm3(Predicted)
• CAS DataBase Reference: Methylphosphonic acid bis(trimethylsilyl) ester(CAS DataBase Reference)
• NIST Chemistry Reference: Methylphosphonic acid bis(trimethylsilyl) ester(18279-83-9)
• EPA Substance Registry System: Methylphosphonic acid bis(trimethylsilyl) ester(18279-83-9)

Safety Data

• Hazardous Substances Data: 18279-83-9(Hazardous Substances Data)

Upstream product

• 57451-29-3 Trimethylsilyl-P-methyl-N-phenyl-N-trimethylsilyl-phosphonamidat 
• 75-77-4 chloro-trimethyl-silane 
• 756-79-6 dimethyl methane phosphonate 
• 676-97-1 methylphosphonic acid dichloroanhydride 
• 10416-59-8 N,O-bis-(trimethylsilyl)-acetamide 
• 1795-31-9 tris(trimethylsilyl) phosphite 
• 74-88-4 methyl iodide 
• 617-86-7 triethylsilane 
• 683-08-9 Diethyl methylphosphonate 
• 39123-58-5 N-(β-hydroxyethyl)-o-aminophenol 
• 996-50-9 N,N-diethyl-1,1,1-trimethylsilanamine 

Downstream Products

• 676-97-1 methylphosphonic acid dichloroanhydride 
• 75-77-4 chloro-trimethyl-silane 
• 1499-17-8 o-phenylene chlorophosphate 

Relevant articles and documents

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The use of ultrasonic activation in Michaelis-Arbuzov reaction promote a by-product in the case of silyl derivatives and in the synthesis of methylene diphosphonate. A mechanism is proposed in which the phosphite give a nucleophilic attack on the quasiphosphonium ion in place of the halide species.

B(C6F5)3-catalyzed silylation versus reduction of phosphonic and phosphinic esters with hydrosilanes

HSiR3/cat-B(C6F)3 induced dealkylation or reduction of esters of phosphorus at 20°C. A specific conversion to silylesters occurred by reaction with tertiary silanes. In contrast, free phosphines were observed in the reaction with mono- or disubstituted silanes. A mechanism was proposed to rationalize these results.

PHOSPHORYLATION OF DISILYLATED CARBOXAMIDES

The reaction of phosphorus(III) acid chlorides and dichlorides with disilylated carboxamides leads to the formation of mono- and bis-(trimethylsilyl)phosphites.The reactions of diethyl phosphorochloridate, O,O-diethyl phosphorochloridothioate, methylphosphonic dichloride, and phosphoryl chloride with disilylated acetamide proceed with the replacement of chlorine atoms by trimethylsiloxy groups.It was shown that β breakdown can occur in the P(S)-N=P-OSiMe3.