PBr3 & PCl3 Flashcards by Molly Gallagher | Brainscape

Q

purpose PBr3?

A

make an alkyl bromide from an alcohol

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Q

best substrates for PBr3?

A

1º & 2º ROHs

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Q

mechanism of PBr3?

A

Sn2 (inversion of configuration)

stereo & regiospecific

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Q

purpose of PCl3

A

make alkyl chloride from alcohol

NOT effective, use SOCl2

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Q

substrate for PCl3

A

3º ROH

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Q

mechanism of PCl3

A

Sn1

carbocation rearrangement problems

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Q

why doesn’t PCl3 work?

A

Cl- is a bad L.G.

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