Synthesis of in, out-3,6,9,12,16,19,22,25,27,30,33,36-dodecaoxabicyclo[12.12.10]hexatriacontane and the chiral cryptand in, out-(–)-3,6,9,12,15,18,21,24,26,29,32-undecaoxabicyclo[12.10.9]tritriacontane. Out, in–in, out isomerism
- 1 January 1977
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 24,p. 918-919
- https://doi.org/10.1039/c39770000918
Abstract
In, out-isomers of two macrobicyclic polyethers have been prepared by a specific route and have been shown by 13C n.m.r. spectroscopy to undergo in, out–out, in isomerization; in the case of the smaller cryptand, the interconversion may be slowed sufficiently by cooling for the bridgehead carbon atoms to be distinguished spectroscopically.Keywords
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