Proces to recover 4-phenoxybiphenyl

Details Proces to recover 4-phenoxybiphenyl Proces to recover 4-phenoxybiphenyl

1989-12-19

1992-04-21

Siegel, Alan

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4140

Patent

active

051070316

ABSTRACT:
The invention is a process to recover 4-phenoxybiphenyl from a phenoxybiphenyl mixture which includes at least 30% by weight of 4-phenoxybiphenyl, the balance being 2-phenoxybiphenyl, 3-phenoxybiphenyl and a minor amount of other compounds. The process involves recrystallizing 4-phenoxybiphenyl as a solid in a single recrystallization step from a solution formed from the mixture and an alcohol solvent. The recovered solid has a 4-phenoxybiphenyl content of at least about 85% by weight of recovered solid and a yield of at least 40% based on the amount of 4-phenoxybiphenyl in the mixture.

REFERENCES:
patent: 1899257 (1933-02-01), Britton et al.
patent: 2095619 (1937-10-01), Stoesser et al.
patent: 4054533 (1977-10-01), Watson
patent: 4092364 (1978-05-01), Smith
patent: 4704448 (1987-11-01), Brugel
Suzumura, "Synthesis of n-alkyl p-biphenylyl ethers and aryl p-biphenylyl ethers", 35 Bull. Chem. Soc. Japan, pp. 108-111 (1962).
Luttringhaus et al., 89 Chem. Ber., pp. 463-474 (1956).

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