
TY  - JOUR
A1  - Whitfield, FB 
A1  - Sugowdz, G 
T1  - Dehydration studies of &#945;- and &#946;-ionol. I. With hexamethylphosphoric triamide
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1982
VL  - 35
IS  - 3
SP  - 591
EP  - 600
KW  - 
UR  - https://doi.org/10.1071/CH9820591 
N2  - &#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. 
ER  -

