Phenothiazine → Ethylbenzene

HRID 979693Notes

Reaction equation

HRID 979693 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.C1C2NC3C(=CC=CC=3)SC=2C=CC=1>C1(C)C(C)=CC=CC=1>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH2:2]([C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1)[CH3:1]

Participants

5

Reactant 2

HCID 7108PhenothiazineHCID 7501Styrene2×

Product 2

HCID 7500EthylbenzeneHCID 7501Styrene

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Conditions

Temperature
125 °C

Procedure

To a 45 cc high pressure bomb was added 3.75 g (0.0025 mol) Me3SiO(Me2SiO)13.5 (MeSiO)5.5 SiMe3, 5.26 g (0.05 mol) styrene, 2.0 g xylene and 1000 ppm (8.1 mg) Ru3CO12 as a catalsyt. Phenothiazine (75.6 mg) was also added to help prevent polymerization of the styrene. The bomb was then heated in a fluidized sand bath at 125° C. for 10 hours after which time the reaction was cooled to room temperature. The solvent and excess styrene as well as ethylbenzene formed during the course of the reaction was removed under vacuum. Analysis by 1HNMR showed the product to be ##STR10##

Workup

  1. additionTo a 45 cc high pressure bomb was added 3.75 g (0.0025 mol) Me3SiO(Me2SiO)13
  2. temperaturewas cooled to room temperature

Sources & evidence

ORD record
ord-9279d8c6cbc54d179610057d98d04ade
Source dataset
uspto-grants-1987_05
Patent number
US04668812

Reaction notes

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