120749-20-4Relevant articles and documents
Photochemical reactions of P-mentha-13,8-triene and structural related P-menthadienes
Spraul, Martin H.,Nitz, Siegfried,Drawert, Friedrich
, p. 3037 - 3044 (1991)
The photochemical and thermal behaviour of cyclic olefins like p-mentha-1,3,8-triene (2) and structural related p-mentha-1,3- and -1,4-dienes under the influence of oxygen have been investigated. Dehydration, ring opening, (4+2)-cycloaddition of singlet oxygen1 and dimerization were observed as concurring mechanisms. The photochemical and thermal dehydrogenation of α-terpinene (1), α-phellandrene (3), γ-terpinene (4) and p-mentha-1,3,8-triene (2) leads to p-cymene (5) and p-cymenene (6), respectively. The mechanism of this aromatization reaction will be discussed in this paper.