Dichlorodiphenylsilane → Phenyltrichlorosilane

HRID 1576358Notes

Reaction equation

HRID 1576358 reaction equation
C1([Si:7]([C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)([Cl:9])[Cl:8])C=CC=CC=1.[Cl:16][SiH](Cl)Cl>[Cl-].[Al+3].[Cl-].[Cl-]>[C:10]1([Si:7]([Cl:8])([Cl:9])[Cl:16])[CH:11]=[CH:12][CH:13]=[CH:14][CH:15]=1

Participants

4

Reactant 2

HCID 6627DichlorodiphenylsilaneHCID 24811Trichlorosilane

Product 1

HCID 7372PhenyltrichlorosilaneYield 114%

Reagents, catalysts & solvents 1

HCID 6451240Aluminum(III) ChlorideCatalyst

Procedure

380 g of diphenyldichlorosilane, 22.5 g of anhydrous aluminium chloride and 0.2 g of hydrated alumina (water content : 27%; specific surface area : 5.8 m2 /g) are introduced into a flask. 478 g of trichlorosilane are run in over the course of 7 hours, whilst keeping the reaction mixture at 70°C and distilling the dichlorosilane. A fraction weighing 77 g, containing 74% of dichlorosilane, is obtained. 362 g of phenyltrichlorosilane are obtained on distilling the mixture remaining in the flask.

Workup

  1. customare run in over the course of 7 hours
  2. customat 70°C
  3. distillationdistilling the dichlorosilane
  4. additioncontaining 74% of dichlorosilane
  5. customis obtained

Sources & evidence

ORD record
ord-649294728225423bb8fb17b49758784e
Source dataset
uspto-grants-1976_09
Patent number
US03980686

Reaction notes

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