Hydrochloric Acid → Chlorotrimethylsilane

HRID 236850

Reaction equation

HRID 236850 reaction equation
Cl.[C:2]1([Si:8]([C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=2)([Cl:10])[Cl:9])[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.Cl[SiH:18]([Cl:20])Cl.[Cl-].[CH2:22]([Al+][CH2:25][CH3:26])C>>[CH3:22][Si:8]([CH3:11])([CH3:2])[Cl:9].[C:11]1([Si:8]([CH3:2])([CH3:22])[Cl:10])[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=1.[C:25]1([CH:26]([SiH2:18][Cl:20])[C:11]2[CH:12]=[CH:13][CH:14]=[CH:15][CH:16]=2)[CH:6]=[CH:7][CH:2]=[CH:3][CH:4]=1.[C:11]1([Si:8]([C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)([C:26]2[CH:25]=[CH:4][CH:3]=[CH:2][CH:7]=2)[Cl:9])[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 6627DichlorodiphenylsilaneHCID 24811TrichlorosilaneHCID 16686102Diethyl aluminum chloride

Product 4

HCID 6397ChlorotrimethylsilaneHCID 64581,1',1''-(Chlorosilylidyne)tris(benzene)HCID 13029ChlorodimethylphenylsilaneHCID 57361550(Diphenylmethyl)chlorosilane

Procedure

Into a 3-necked flask equipped with a stirrer, reflux condenser and a gas conduit, is introduced over a period of 5 minutes with constant agitation and at room temperature, 2-liters [measured at 20° C. and 720 mm Hg (abs.) and thus 0.94 percent based on the total weight of the silanes used], of gaseous hydrogen chloride, into a mixture consisting of 253 grams (1 mol) of diphenyldichlorosilane, 88 grams (1 mol) of tetramethylsilane, 3 grams of trichlorosilane and 3 grams diethylaluminum chloride. Stirring is continued for an additional 4 hours while the mixture is heated under reflux. Fractional distillation yields 30 grams of trimethylchlorosilane, 35 grams of phenyldimethylchlorosilane, 80 grams of diphenylmethylchlorosilane and 74 grams of triphenylchlorosilane.

Workup

  1. customInto a 3-necked flask equipped with a stirrer
  2. temperaturereflux condenser
  3. additiona gas conduit, is introduced over a period of 5 minutes with constant agitation and at room temperature
  4. custommeasured at 20° C.
  5. temperatureis heated
  6. temperatureunder reflux
  7. distillationFractional distillation

Sources & evidence

ORD record
ord-88e552d6ce6545089f524dc47090fe0f
Source dataset
uspto-grants-1979_06
Patent number
US04158010

Linked notes

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