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Catalytic cyclodimerization of piperylene

Shamayev, V.S. / Stepanova, L.P. / Shmelev, L.V. / Ratov, A.N. / Richmond, G.Kh.

Abstract 1. 1. A study was made of catalytic cyclodimerization of piperylene on Ni (acac)2P(OC6H4)OC6H5)3(C4H9)3Al at a temperature of 100°C. 2. 2. Piperylene conversion and the selectivity of formation of end products depend on the ratio of isomeric forms of piperylene in the initial mixture. When the mixture is enriched with cis-piperylene, 3,4- and 3,7-dimethylcyclo-1,5-octadienes with substituents in the axial positions, are formed. When the initial mixture is enriched with trans-piperylene 3,7-dimethylcycloocta-1,5-diene w with substituents in the equatorial positions predominates reaction products. 3. 3. The structure of dimethylcyclooctadiene isomers formed is confirmed by PMR and IR spectroscopy.

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Catalytic cyclodimerization of piperylene

Shamayev, V.S. / Stepanova, L.P. / Shmelev, L.V. / Ratov, A.N. / Richmond, G.Kh.

Abstract 1. 1. A study was made of catalytic cyclodimerization of piperylene on Ni (acac)2P(OC6H4)OC6H5)3(C4H9)3Al at a temperature of 100°C. 2. 2. Piperylene conversion and the selectivity of formation of end products depend on the ratio of isomeric forms of piperylene in the initial mixture. When the mixture is enriched with cis-piperylene, 3,4- and 3,7-dimethylcyclo-1,5-octadienes with substituents in the axial positions, are formed. When the initial mixture is enriched with trans-piperylene 3,7-dimethylcycloocta-1,5-diene w with substituents in the equatorial positions predominates reaction products. 3. 3. The structure of dimethylcyclooctadiene isomers formed is confirmed by PMR and IR spectroscopy.

Catalytic cyclodimerization of piperylene

Shamayev, V.S. / Stepanova, L.P. / Shmelev, L.V. / Ratov, A.N. / Richmond, G.Kh.

Abstract 1. 1. A study was made of catalytic cyclodimerization of piperylene on Ni (acac)2P(OC6H4)OC6H5)3(C4H9)3Al at a temperature of 100°C. 2. 2. Piperylene conversion and the selectivity of formation of end products depend on the ratio of isomeric forms of piperylene in the initial mixture. When the mixture is enriched with cis-piperylene, 3,4- and 3,7-dimethylcyclo-1,5-octadienes with substituents in the axial positions, are formed. When the initial mixture is enriched with trans-piperylene 3,7-dimethylcycloocta-1,5-diene w with substituents in the equatorial positions predominates reaction products. 3. 3. The structure of dimethylcyclooctadiene isomers formed is confirmed by PMR and IR spectroscopy.

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Title:

Catalytic cyclodimerization of piperylene

Contributors:

Shamayev, V.S. (author) / Stepanova, L.P. (author) / Shmelev, L.V. (author) / Ratov, A.N. (author) / Richmond, G.Kh. (author)

Published in:

Petroleum Chemistry: USSR (English Translation of Neftekhimiya) ; 17 ; 100-105

Publication date:

1976-10-06

Size:

6 pages

ISSN:

DOI:

https://doi.org/10.1016/0031-6458(77)90059-4

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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