title: Electrocyclization of phosphahexatrienes: an approach to λ5-phosphinines.
abstract: We experimentally verified an assumption that the substitution of a carbon atom with a pentavalent phosphorus atom in 1-alkoxy (dialkylamino) hexatrienes will not hamper its ability to electrocyclize. A series of 1-, 3-, and 5-phosphahexatrienes were synthesized. It was shown that parent λ(5)-phosphinines could be synthesized by electrocyclization of the 3- and 5-phosphahexatrienes. The resultant electrocyclization is a convenient method for the synthesis of parent λ(5)-phosphinines bearing different substituents on the phosphorus atom.
authors.affiliation: Institute of Organic Chemistry, National Academy of Sciences of Ukraine Murmanska 5, Kyiv-94, 02094, Ukraine.
authors.forename: Yurii V
authors.initials: YV
authors.lastname: Svyaschenko
authors.forename: Bogdan B
authors.initials: BB
authors.lastname: Barnych
authors.forename: Dmitriy M
authors.initials: DM
authors.lastname: Volochnyuk
authors.forename: Nadiya V
authors.initials: NV
authors.lastname: Shevchuk
authors.forename: Aleksandr N
authors.initials: AN
authors.lastname: Kostyuk