1,7-Octadiene process

Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...

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585503, 585506, 585627, 252431P, 260429R, C07C 1112

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active

042296056

ABSTRACT:
A process for preparing 1,7-octadiene by hydrodimerizing butadiene which comprises reacting the butadiene in the presence of formic acid or a salt thereof, optionally a solvent and a catalyst comprising palladium complexed with a tertiary phosphinite or phosphonite. More active catalysts are obtained with phosphinites and phosphonites than with phosphines or phosphites.

REFERENCES:
patent: 3732328 (1973-05-01), Wright
patent: 3823199 (1974-07-01), Wright
patent: 3992456 (1976-11-01), Atkins et al.
patent: 4100194 (1978-06-01), Hobbs et al.
Roffia et al., J. Orgmet. Chem., 55 (1973) pp. 405-407.
Gardner et al., Tet. Letters, 1972, #2, pp. 163-164.
Couch et al., J. Chem. Soc. (Dalton) 1974 (12) pp. 1309-1313.
Pittman et al., Chem. Abst., 86 (1977) #54628.

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