Water → 2-Benzyltoluene

HRID 1764607Notes

Reaction equation

HRID 1764607 reaction equation
S(=O)(=O)(O)O.O.P(=O)(O)(O)O.[CH3:12][C:13]1[C:18]([CH2:19]Cl)=[CH:17][CH:16]=[CH:15][CH:14]=1>C1C=CC=CC=1>[CH2:19]([C:18]1[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=1[CH3:12])[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1

Participants

6

Reactant 4

HCID 962WaterHCID 1004Phosphoric AcidHCID 1118Sulfuric AcidHCID 11093alpha-Chloro-o-xylene

Product 1

HCID 697382-BenzyltolueneYield 93.6%

Reagents, catalysts & solvents 1

HCID 241BenzeneSolvent

Procedure

A mixture of 3,200 parts of concentrated sulfuric acid (98% strength by weight), 400 parts of water and 1,800 parts of 85 per cent strength by weight phosphoric acid is circulated in a reactor by pumping with a centrifugal pump. A solution of 1,680 parts of o-xylyl chloride and 4,680 parts of benzene is added in the course of 31/2 hours at from 75° to 77° C; an emulsion forms. A part of the emulsion is fed continuously from an overflow into a receiver. The inorganic phase is returned to the circulation system and the organic phase is distilled. 2,023 parts (93.6% of theory) of o-benzyltoluene boiling at 98° C at 0.2 mm Hg are isolated.

Workup

  1. customis circulated in a reactor
  2. distillationthe organic phase is distilled

Sources & evidence

ORD record
ord-a984b75c2be5416b8cc4d59e77114112
Source dataset
uspto-grants-1978_09
Patent number
US04117019

Reaction notes

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