TRANSFORMATIONS OF p-MENTHADIENES UNDER THE ACTION OF POTASSIUM tert-BUTANOLATE IN DIMETHYL SULFOXIDE

Article abstract of DOI:10.1007/BF00575037

The products of the transformation of α- and γ-terpinenes, terpinolene, (+)-trans-isolimonene, and (+)-limonene under the action of potassium tert-butanolate in dimethyl sulfoxide contained - in addition to the α- and γ-terpinenes, isoterpinolene, p-mentha-3,8-diene and p-cymene found previously - terpinolene, α- and β-phellandrenes, p-mentha-2,4-diene (in total amount of 1-3percent), and polymers.Under these conditions, limonene is racemized.The primary products of the isomerization reaction have been identified.A supplementary scheme for the isomerization transformations of p-menthadienes is presented.