Stereochemistry of heterocycles

Autor: Samitov, Yu. Yu., Yavorskii, A. S., Gren', A. I., Bogat-skii, A. V., Stepanova, O. S.
Zdroj: Chemistry of Heterocyclic Compounds; August 1975, Vol. 11 Issue: 8 p904-908, 5p
Abstrakt: 2-Methyl-and 2,5-dialkyl-5-phenoxy-1,3-dioxanes were synthesized and separated into their geometrical isomers by precision rectification. The configuration and conformations of these isomers were determined by PMR spectroscopy. It is shown that the low-boiling trans isomers exist primarily in the chair conformation with an equatorial phenoxy group, whereas the high-boiling cis isomers exist primarily in the chair conformation with an axial phenoxy group.
Databáze: Supplemental Index