162282-94-2Relevant articles and documents
STEREOCHEMISTRY OF THE CYCLIZATION OF PSEUDOIRONE AT ELEVATED TEMPERATURE
Kron, A. A.,Fedotova, Z. M.,Novikov, N. A.
, p. 534 - 536 (2007/10/02)
The cyclization of pseudoirone (6,9,10-trimethyl-3,5,9-undecatrien-2-one) in the presence of a catalytic amount of phosphoric acid at 110 deg C gives a high yield and leads to the preferential formation of α-irone.It was established that if the reaction was conducted in the presence of protic acids 1-(1,3,4-trimethyl-3-cyclohexenyl)-1-penten-4-one was formed in addition to the α, β, and γ isomers.