Octin

Analog erhalt man aus 3-Octin bei -78° in 52%iger Ausbeute trans-3-Octen1 (Kp754 ... 

Analog erhalt man aus Octin-(l) trans-l-Deutero-octen-(l) (94% d.Th.). Uber die Deuterierung von Alkinen mit Benzo-l,3,2-dioxaborol/Essigsaure-0-D s. Lit.6. 

Lithiumalanat reduziert in Diathylather auf ahnliche Weise 1,2,3-Triphenyl-cyclopro-penylium-bromid mit 60-70%iger Ausbeute zu l,2,3-Triphenyl-cyclopropen2. 1,2-Di-propyl-cyclopropenylium-perchlorat ergibt dagegen mit Lithiumalanat in Diathylather bei 0° neben 27% d.Th. Octin-(4) 3% d.Th. 1,2-Dipropyl-cyclopropen3 ... 

Alkine, z. B. 1- und 4-Octin, lassen sich durch Titan(IV)-chlorid/Lithiumalanat bei 0° reduzieren. 1-Octin liefert Octan (81% d.Th.), wahrend 4-Octin zu einem Gemisch aus... 

OCT-43 (Octin) - recombinant variant of IL-1 p Mycosis fungoides and antitumour in... 

Methyl octine carbonate Methyl heptine carbonate c/.s-3-Hexenyl methyl carbonate Nonadienal Parmavert Violet leaf absolute Liffarome Phenyl acetaldehyde glyceroacetal Fiorivert... 

This effect of physically shielding unstable perfume components from contact with the water phase may perhaps be provided also by the stable components of the perfume compound itself, provided that the latter are present in sufficient excess. This would account for Paul Jellinek s observation (1954, p. 116) that "the presence of a soap-resistant aromatic delays the decomposition of compounds which are unstable to alkali, and may prevent it altogether," and for the common observation that unstable but powerful perfumery materials such as methyl heptine and octine carbonates which are normally used at very low levels exhibit better stability in practice than tests of their stability in pure form would have indicated. 

The allylic alkylation reactions were carried out with various substrates, among them an unsaturated phosphate [88], methyl cyclohexenone [17] and 1-octin [18] (see Figure 4.25). 

Octin 3-Ethyliden- V/ld, 644, 648 3-Penten-l-in 3-tert.-Butyl-4-methyl-V/ld, 644, 650... 

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