Process for preparing halogen-terminated oligomers useful in the

Details Process for preparing halogen-terminated oligomers useful in the Process for preparing halogen-terminated oligomers useful in the

1983-08-12

1985-10-29

Daus, Donald G.

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

Organic compounds

Sulfur containing

568641, C07C14710, C07C14712

Patent

active

045502102

ABSTRACT:
A process for preparing halogen-terminated oligomers by an Ullmann condensation is disclosed wherein a diphenol and a dihalobenzene are reacted in the presence of cuprous oxide in 2,4,6-collidine. The oligomers are useful in producing acetylene-terminated resins by replacing the terminal halogen atoms with acetylene groups.

REFERENCES:
patent: 4070383 (1978-01-01), Rutledge
patent: 4356325 (1982-10-01), Harrison et al.
Sabourin, The Synthesis of Polymer Precursors and Exploratory Research Based on Acetylene Displacement Reaction, 10, 1980.
Harrison et al., Low Cost Routes to Acetylenic Intermediates, Dec. 1979.
Bacon et al., "Metal Ions and Complexes in Organic Reactions, Part IV, Copper-Promoted Preparations of Diaryl Ethers & Competing Hydrogen-Transfer Processes", J. Chem. Soc., 4953 (1965).

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