Synthesis and Isomer Composition of 2-Polyfluoroalkoxy-1,3,2-dioxaphospholanes and -phosphinanes

Nina K. Gusarova, S. I. Verkhoturova, S. N. Arbuzova, T. I. Kazantseva, Alexander I. Albanov, Arailym M. Nalibayeva, Gaukhar K. Bishimbayeva, Константин Анатольевич Апарцин, Victoria V. Kireeva, Boris Aleksandrovich Trofimov

2018

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DOI 10.1134/s107036321804014x
Data confidence 70 medium
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Abstract

Polyfluoroalkanols readily reacted with 2-chloro-1,3,2-dioxaphospholanes and 2-chloro-1,3,2-dioxaphosphinanes in hexane in the presence of triethylamine (–10 to 25°C, 5 h) to give 2-polyfluoroalkoxy-1,3,2- dioxaphospholanes and 2-polyfluoroalkoxy-1,3,2-dioxaphosphinanes in 48–72% yield. The products were found to exist as mixtures of cis and trans isomers with the trans isomer predominating for the phospholanes and cis isomer predominating for the phosphinanes according to the 1 H, 13 C, 19 F, and 31 P NMR data.