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Patent Searching and Data


Title:
METHOD FOR PRODUCING PERFLUOROCYCLOALKENE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2020/075729
Kind Code:
A1
Abstract:
A perfluorocycloalkene compound represented by formula (1) [in the formula, R1-R4 are the same or different and represent a fluorine atom or a perfluoroalkyl group] is obtained at a high yield and high selectivity as well as a high reaction conversion rate by subjecting a perfluoroalkadiene compound represented by CR1 2=CR2-CR3=CR4 2 [in the formula, R1-R4 are the same or different and represent a fluorine atom or a perfluoroalkyl group] to a cyclization reaction. The cyclization reaction can be carried out in the presence of a catalyst, by a gas-phase flow continuous system, or both in the presence of a catalyst and by a continuous gas-phase flow system.

Inventors:
ETOU YUUSUKE (JP)
NAKAMURA SHINGO (JP)
Application Number:
JP2019/039726
Publication Date:
April 16, 2020
Filing Date:
October 08, 2019
Export Citation:
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Assignee:
DAIKIN IND LTD (JP)
International Classes:
C07C17/35; C07C23/06; C07B61/00
Foreign References:
JP2014058488A2014-04-03
CN107602340A2018-01-19
Other References:
XIAOQING JIA ET AL.: "Preparation of cis-1, 1, 1, 4, 4, 4-hexafluorobut-2-ene by cis-selective semi-hydrogenation of perfluoro-2-butyne", JOURNAL OF FLUORINE CHEMISTRY, vol. 132, 2011, pages 1188 - 1193, XP028303386, DOI: 10.1016/j.jfluchem.2011.06.004
WILLIAM R. DOLBIER ET AL.: "The electrocyclic interconversion of pefluoro-3-methycyclobutene with Z- and E-perfluoro-1,3-pentadiene", TETRAHEDRON LETTERS, vol. 27, no. 37, 1986, pages 4387 - 4390, XP055701502
Attorney, Agent or Firm:
SAEGUSA & PARTNERS (JP)
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