Water → Disiloxane, 1,3-dichloro-1,3-dimethyl-1,3-diphenyl-

HRID 893778

Reaction equation

HRID 893778 reaction equation
[CH3:1][Si:2]([C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)(Cl)[Cl:3].[OH2:11]>CCOCC>[CH3:1][Si:2]([Cl:3])([C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)[O:11][Si:2]([Cl:3])([CH3:1])[C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1

Participants

4

Reactant 2

HCID 962WaterHCID 9006Dichloromethylphenylsilane2×

Product 1

HCID 107420Disiloxane, 1,3-dichloro-1,3-dimethyl-1,3-diphenyl-Yield 33.5%

Reagents, catalysts & solvents 1

HCID 3283Diethyl EtherSolvent2×

Procedure

Methylphenyl dichlorosilane (765 g; 4.0 mol.) and the same amount of diethyl ether were introduced into a four-necked flask of 2 liters volume equipped with a stirring machine, a reflux condenser, a thermometer and a dropping funnel, followed by stirring the mixture, dropwise adding 36 g (2.0 mol.) of water through the dropping funnel over five hours under nitrogen atmosphere, and then refluxing the mixture for an additional three hours. After refluxing the mixture, ether was distilled off and the starting material, methylphenyl dichlorosilane (184 g; 0.96 mol.) was recovered by distilling the reaction mixture in vacuo to obtain 220 g (0.67 mol.) of 1,3-dimethyl-1,3-diphenyl dichlorodisiloxane. Boiling Point=135°-138° C./2 mmHg.

Workup

  1. customequipped with a stirring machine, a reflux condenser
  2. temperaturerefluxing the mixture for an additional three hours
  3. distillationwas distilled off
  4. distillationby distilling the reaction mixture in vacuo

Sources & evidence

ORD record
ord-f8a413fbb0db4da2bc93d96bc94bf984
Source dataset
uspto-grants-1992_06
Patent number
US05126419

Linked notes

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