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New Carbonyl Compounds in the High‐Boiling Fraction of Lavender Oil. 3rd Communication
Author(s) -
Kaiser Roman,
Lamparsky Dietmar
Publication year - 1984
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19840670503
Subject(s) - chemistry , methyl vinyl ketone , ketone , organic chemistry , adduct , catalysis
The occurrence of a series of new constituents which can be considered as Diels‐Alder adducts of methyl vinyl ketone and ocimene (→1–4), myrcene (→ 9 , 10 ) or β‐far‐nesene ( → 11 , 12 ), respectively, was reported. Furthermore, the structures of four isomeric cyclohexene derivatives could be established as adducts 21–24 of ( E, Z) ‐ and ( E, E )‐1,3,5‐undecatrience and methyl vinyl ketone. Another series of constituents having the norbornane skeleton represents adducts 25–32 , and 33–40 of methyl cyclopentadiene and 1‐octen‐3‐one or methyl vinyl ketone, respectively. In accordance with Alder 's endo ‐rule the endo ‐isomers are preponderant in the natural as well as in the synthetic mixtures. Most of these constituents could also be identified in a lavender absolute as well as in a freshly prepared hexane extract of lavender flowers ( Lavandula officinalis C HAIX ).