Hydrogen Bromide → 4,4',4''-Phosphanetriyltriphenol--hydrogen bromide (1/1)

HRID 1632796Notes

Reaction equation

HRID 1632796 reaction equation
C[O:2][C:3]1[CH:8]=[CH:7][C:6]([P:9]([C:18]2[CH:23]=[CH:22][C:21]([O:24]C)=[CH:20][CH:19]=2)[C:10]2[CH:15]=[CH:14][C:13]([O:16]C)=[CH:12][CH:11]=2)=[CH:5][CH:4]=1.N#N.[BrH:28]>>[BrH:28].[OH:2][C:3]1[CH:8]=[CH:7][C:6]([P:9]([C:18]2[CH:23]=[CH:22][C:21]([OH:24])=[CH:20][CH:19]=2)[C:10]2[CH:15]=[CH:14][C:13]([OH:16])=[CH:12][CH:11]=2)=[CH:5][CH:4]=1

Participants

4

Reactant 3

HCID 260Hydrogen BromideHCID 947NitrogenHCID 70071Phosphine, tris(4-methoxyphenyl)-

Product 1

HCID 202673944,4',4''-Phosphanetriyltriphenol--hydrogen bromide (1/1)Yield 98%

Procedure

To 30 ml 48% HBr in a 50 ml round-bottom flask was added 1 gram (0.0033 mole) of tri(p-methoxyphenyl)phosphine. The homogeneous solution was heated to reflux (124° C.) under a stream of N2 (to remove CH3Br) and within 40 minutes a white precipitate formed. After 2 hours reflux, the mixture was filtered, washed with water, and vacuum dried to give 1.11 g (98%) tri(p-hydroxyphenyl)phosphine hydrobromide.

Workup

  1. temperatureThe homogeneous solution was heated
  2. customwithin 40 minutes a white precipitate formed
  3. temperatureAfter 2 hours reflux
  4. filtrationthe mixture was filtered
  5. washwashed with water, and vacuum
  6. customdried

Sources & evidence

ORD record
ord-d6e859ce49054c9699381c97308e7c79
Source dataset
uspto-grants-1984_10
Patent number
US04477645

Reaction notes

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