
%0 Journal Article
%A Whitfield, FB 
%A Sugowdz, G 
%T Dehydration studies of &#945;- and &#946;-ionol. I. With hexamethylphosphoric triamide
%J Australian Journal of Chemistry
%D 1982/03/01
%V 35
%N 3
%P 591-600
%K 
%R https://doi.org/10.1071/CH9820591
%U https://www.publish.csiro.au/paper/CH9820591 
%X &#945;-Ionol (2) when heated under reflux with hexamethylphosphoric triamide gave principally one product (1'E)-6-(buta-1',3'-dienyl)-1,5,5-trimethylcyclohex-1-ene (4a) together with trace quantities of the (1'Z)-isomer (4b). Under similar conditions &#946;-ionol (3) gave as major products (6E,2'E)- and (6Z,2'E)-6-(but-2'-enylidene)-1,5,5-trimethylcyclohex-1-ene (1a) and (1b) together with smaller quantities of (1'E)-1-(buta-1',3'-dienyl)-6,6-dimethyl-2-methylenecyclohexane (8) and 1,1,6-trimethyl- 1,2,3,4,5,6-hexahydronaphthalene (9). Minor products from this reaction included the isomeric trienes (1c) and (1d). Reaction pathways are suggested for the formation of all identified products. 
