3,7,11-Trimethyldodeca-1,6,10-trien-3-ol,isomerengemisch Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Beschreibung
Nerolidol has a faint, floral odor similar to rose and apple. It is an unusually sweet, fresh, tenacious odor. The natural product can be dextro- or levo-rotatory, whereas the synthetic product is optically inactive; the double bond at positions 6-7 accounts for the cis- and trans-forms.
Chemische Eigenschaften
Nerolidol is the sesquiterpene
analog of linalool. Because of the double bond at the 6-position, it exists as (6Z)- and (6E)- isomers, each forming an enantiomeric pair,
since the carbon atom in the 3-position is asymmetric.
Nerolidol is a component of many essential oils. (3S,6E)-(+)-nerolidol occurs in cabreuva oil.
Synthetic nerolidol consists of a mixture of racemic (6Z)- and (6E)-nerolidol
and is a colorless liquid with a long-lasting, mild floral odor.
Industrial synthesis of nerolidol starts with linalool, which is converted into
geranylacetone by using diketene, ethyl acetoacetate, or isopropenyl methyl
ether, analogously to the synthesis of 6-methyl-5-hepten-2-one from 2-methyl-
3-buten-2-ol. Addition of acetylene and partial hydrogenation of the resultant
dehydronerolidol produces a mixture of (6Z)- and (6E)-nerolidol racemates.Nerolidol is used as a base note in many delicate floral odor complexes. It is also
an intermediate in the production of vitamins E and K
1.
Occurrence
Reported found in over 25 natural sources, including the essential oils of neroli, ylang-ylang, Peru balsam; in
currant aroma; also reported in Dalbergia sissoo (60%, dl-), vervain, the distillation water of petitgrain bigarade, Helicrysum italicum, Myrocarpus frondosus and Myrocarpus fastigiatus (80%, d-), Tolu balsam, Acacia farnesiana, orange flower water, Paraguay
petitgrain, jasmine, Melaleuca smithii and Melaleuca viridiflora. Also reported found in citrus peel oils and juices, guava, strawberry, peppermint and spearmint oil, pepper, milk powder, hop oil, beer, cognac, white wine, green tea, beans, mushroom, cardamom, rice, dill, corn oil, basil, wort, myrtle leaf, maté and mastic gum oil.
Verwenden
Nerolidol is one of the main component in the essential oils from fresh aerial parts of Thymus ciliatus (Lamiaceae). Also, it is a terpene that displays high potency on the contractility of cardiac muscle in guinea pig left atrium. A potential and effective treatment for malaria.
synthetische
1) From Geranylacetone plus Acetylene, followed by reduction of the acetylenic linkage (HotTmann-laRoche process).
2) by isolation from Cabreuva oil or other
essential oils.
Allgemeine Beschreibung
Nerolidol is a naturally occurring sesquiterpene found in the essential oils.
3,7,11-Trimethyldodeca-1,6,10-trien-3-ol,isomerengemisch Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
