Methanol → Diphenylmethylsilyl methacrylate dimethylbenzyl methacrylate

HRID 341725Notes

Reaction equation

HRID 341725 reaction equation
[C:1]([O:6][SiH2:7][CH:8]([C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1)(=[O:5])[C:2]([CH3:4])=[CH2:3].[C:21]([O:26][C:27]([CH3:35])([CH3:34])[C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1)(=[O:25])[C:22]([CH3:24])=[CH2:23].CC(N=NC(C#N)(C)C)(C#N)C.CO>C1(C)C=CC=CC=1>[C:1]([O:6][SiH2:7][CH:8]([C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1)[C:9]1[CH:10]=[CH:11][CH:12]=[CH:13][CH:14]=1)(=[O:5])[C:2]([CH3:4])=[CH2:3].[C:21]([O:26][C:27]([CH3:35])([CH3:34])[C:28]1[CH:29]=[CH:30][CH:31]=[CH:32][CH:33]=1)(=[O:25])[C:22]([CH3:24])=[CH2:23]

Participants

6

Reactant 4

HCID 887MethanolHCID 6547AzobisisobutyronitrileHCID 157931162-Phenylpropan-2-yl 2-methylprop-2-enoateHCID 123501849Diphenylmethylsilyl methacrylate

Product 1

HCID 131721056Diphenylmethylsilyl methacrylate dimethylbenzyl methacrylateYield 88%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent3×

Procedure

Diphenylmethylsilyl methacrylate and dimethylbenzyl methacrylate were mixed at a mixing ratio of 1:1 so as to form a toluene solution having a monomer concentration of 5 mol/liter. Next, 2 mol %, on the basis of the monomer, of AIBN was added to the mixture, and the mixture was retained in an oil bath at 80° C. for 8 hours with stirring. Then, the mixture was left standing at room temperature to cool, and the reaction product was diluted with toluene. The toluene solution was dropped into large quantities of methanol, and the resulting precipitate was filtered and then dried to obtain a diphenylmethylsilyl methacrylate/dimethylbenzyl methacrylate copolymer represented by the following formula, at a yield of 88%. The molecular weight was 20,000 and the dispersion was 1.74. ##STR15## wherein each of m and n is a positive integer.

Workup

  1. waitThen, the mixture was left
  2. customstanding at room temperature
  3. temperatureto cool
  4. filtrationthe resulting precipitate was filtered
  5. customdried

Sources & evidence

ORD record
ord-9d6e4707fe184fdeb1aad93b6ba8201e
Source dataset
uspto-grants-1999_01
Patent number
US05856071

Reaction notes

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