Claims
- 1. A method of preparing 2-2-bis(4-ethynylbenzoyloxy-4'-phenyl)propane comprising:
- adding 4-ethynylbenzoyl chloride to a stirred solution of 2,2-bis(4-hydroxyphenyl)propane in dry pridine,
- stirring this mixture approximately twelve hours and precipitating the mixture in a 5% solution of hydrochloric acid,
- combining the solid precipitate with a 10% sodium bicarbonate solution,
- collecting the solid by filtration and air drying the recovered solid,
- recrystallization the solid from a 80/20 ethanol/chloroform mixture to recover light yellow needle crystals of 2,2-bis(4-ethynylbenzoyloxy-4-phenyl)propane.
- 2. The method of claim 1 wherein the molar ratio of the raw ingredients comprise:
- 16.5 mole 4-ethynylbenzoyl chloride,
- 7.5 mmole 2,2-bis(4-hydroxyphenyl)propane, and
- the recovered yield of 2,2-bis(4-hydroxyphenyl)propane is 66%.
Parent Case Info
This is a division of application Ser. No. 613,138, filed May 23, 1984 now U.S. Pat. No. 4,567,240.
ORIGIN OF THE INVENTION
The invention described herein was made in the performance of work under a NASA contract and is subject to the provisions of Section 305 of the National Aeronautics and Space Act of 1958, Public Law 85-568 (72 Stat. 435; 42 USC 2457).
US Referenced Citations (6)
Divisions (1)
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Number |
Date |
Country |
Parent |
613138 |
May 1984 |
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