Triphenylphosphine → (3,5-Dimethoxybenzyl)triphenylphosphonium bromide

HRID 1389187

Reaction equation

HRID 1389187 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:8]=[C:9]([O:11][CH3:12])[CH:10]=1)[CH2:6][Br:7].[C:13]1([P:19]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=2)[C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1>C(#N)C>[Br-:7].[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH:8]=[C:9]([O:11][CH3:12])[CH:10]=1)[CH2:6][P+:19]([C:20]1[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=1)([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:13]1[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=1

Participants

4

Reactant 2

HCID 11776TriphenylphosphineHCID 12744903,5-Dimethoxybenzyl Bromide

Product 1

HCID 10962038(3,5-Dimethoxybenzyl)triphenylphosphonium bromide

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

The 3,5-dimethoxybenzyl triphenylphosphonium bromide is prepared by refluxing a mixture of 3,5-dimethoxybenzyl bromide (12 g.) and triphenylphosphine (14.2 g.) in acetonitrile (200 ml.) for one hour. The reaction mixture is then cooled and the crystalline product recovered by filtration, washed with ether and dried (20 g.); m.p. 269°-270° C.

Workup

  1. temperatureby refluxing
  2. temperatureThe reaction mixture is then cooled
  3. filtrationthe crystalline product recovered by filtration
  4. washwashed with ether
  5. customdried (20 g.)

Sources & evidence

ORD record
ord-38dd8724eeed44b5b7e0b0172da1adff
Source dataset
uspto-grants-1981_01
Patent number
US04243674

Linked notes

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