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Methyltriphenylphosphonium bromide

Chemical compound From Wikipedia, the free encyclopedia

Methyltriphenylphosphonium bromide
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Methyltriphenylphosphonium bromide is the organophosphorus compound with the formula [(C6H5)3PCH3]Br. It is the bromide salt of a phosphonium cation. It is a white salt that is soluble in polar organic solvents.

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Synthesis and reactions

Methyltriphenylphosphonium bromide is produced by treating triphenylphosphine with methyl bromide:[1]

Ph3P + CH3Br → Ph3PCH3Br

Methyltriphenylphosphonium bromide is the principal precursor to methylenetriphenylphosphorane, a useful methylenating reagent. This conversion is achieved by treating methyltriphenylphosphonium bromide with strong base.[2]

Ph3PCH3Br + BuLi → Ph3PCH2 + LiBr + BuH
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References

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