Claims
- 1. A bromination process which comprises contacting liquid bromine with a diphenoquinone of the formula ##SPC3##
- where independently each R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a normal methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl or octyl radical or is a cyclohexyl radical, and recovering a biphenol of the formula ##SPC4##
- where each R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is as previously defined.
- 2. The process of claim 1, wherein the mole ratio of bromine to diphenoquinone is at least greater than about 1.5:1.
- 3. The process of claim 2, wherein the diphenoquinone is added to the liquid bromine at about ambient room temperature.
- 4. The process of claim 3, wherein the resulting reaction mixture is heated at elevated temperatures to complete the bromination reaction.
- 5. The process of claim 1, wherein independently each R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a methyl radical.
- 6. The process of claim 4, wherein each R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a methyl radical.
Parent Case Info
This is a division of application Ser. No. 169,517, filed Aug. 5, 1971.
US Referenced Citations (4)
Non-Patent Literature Citations (1)
Entry |
Auwer, "Ber.", 38, 226, (1905). |
Divisions (1)
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Number |
Date |
Country |
Parent |
169517 |
Aug 1971 |
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