Undecylenic aldehyde

Undecyl alcohol, u7 Undecylenic aldehyde, ul2 Undecyl-10-en-l-oic acid, ul3 Undecylic aldehyde, ul... 

In Coriandre (Couturier 1973) the top note is of coriander, ylang, styrallyl acetate, and undecylenic aldehyde, with geranium as part of the rose note. The type of rose base, which probably makes up some 10% of the formula, is a classic combination of phenylethyl alcohol, citronellol, geraniol, geranyl acetate, honey notes such as ethyl phenylacetate and phenylethyl phenylacetate, phenylacetaldehyde, rosatol, camomile, and violet leaf. Apart from hydroxycitronellal, Lyral, and phenylacetaldehyde glyceroacetal add to the muguet character. 

Undecalactone, see Aldehyde C14 Undecylenic aldehyde, see Aldehyde Cl 1 Undecylic aldehyde, see Aldehyde Cl 1... 

SYNS ALDEHYDE C-11, UNDECYLENIC FEMA No. 3095 HENDECENAL 1-UNDECEN-lO-AL UNDEC-YLENALDEHYDE 10-UNDECYLENEALDEHYDE D UNDECYLENIC ALDEHYDE... 

UNDECYLENEALDEHYDE see ULJOOO UNDECYLENIC ALDEHYDE see ULJOOO UNDECYLENIC ALDEHYDE DIGERANYL ACETAL see UNAIOO... 

CAS 141-13-9 EINECS/ELINCS 205-460-8 Synonyms 2,6,10-Trimethyl-9-undecenal Trimethyl undecylenic aldehyde 9-Undecenal,... 

Synonyms Aldehyde C-11 undecylenic Hendecen-9-al 9-Undecen-1-al Undecenoic aldehyde Undecylenic aldehyde... 

Undecylenic acid, monoester with 1,2,3-propanetriol. See Glyceryl undecylenate Undecylenic alcohol. See Undecen-1-ol Undecylenic aldehyde. See 9-Undecenal 10-Undecenal... 

In order to confer the calixarenes the ability to form SAMs on metal surfaces, they have to be chemically modified to introduce chemical functions (e.g., thiol, thioether, disulfide) able of chemisorption on the surface. Reinhoudt published the synthesis of calix[4]arenes bearing four di- -decyl sulfide chains at the lower rims. The synthesis proceeds via first the alkylation of the calix[4]arene-25,26,27,28-tetrol with 10-undecen-l-yl tosylate followed by the anti-Markovnikov addition of 1-dodecanthiol in the presence of 9-borabicyclo[3.3.1]nonane (9-BBN) (Fig. 37.11) [64]. Similarly to calix[4]arenes, resorcin[4]arenes tetrasulfides have been produced by the condensation reaction of resorcinol and 11-undecylenic aldehyde followed by the addition of 1 -dodecanthiol to the terminal double bonds of the alkyl chains using catalytic amounts of 9-BBN [63]. 

Pyrolytic Decomposition. The pyrolytic decomposition at 350—460°C of castor oil or the methyl ester of ricinoleic acid spHts the ricinoleate molecule at the hydroxyl group forming heptaldehyde and undecylenic acids. Heptaldehyde, used in the manufacture of synthetic flavors and fragrances (see Elavors and spices Perfumes) may also be converted to heptanoic acid by various oxidation techniques and to heptyl alcohol by catalytic hydrogenation. When heptaldehyde reacts with benzaldehyde, amyl cinnamic aldehyde is produced (see Cinnamic acid, cinnamaldehyde, and cinnamyl... 

Alcoholic Sulfuric Acid, 0.5 N, 859 Alcoholic Sulfuric Acid, 5 N, 859 Alcohols, Total, 815 ALDC Activity, (S3)110 Aldehyde C-6, 504 Aldehyde C-7, 502, (S3)76 Aldehyde C-8, 540 Aldehyde C-9, 538 Aldehyde C-10, 476 Aldehyde C-ll Undecyclic, 560 Aldehyde C-ll Undecylenic, 560 Aldehyde C-12,518 Aldehyde C-12 MNA, 534 Aldehyde C-14 Pure, So-Called, 560 Aldehyde C-16, 492 Aldehyde C-18, So-Called, 538 Aldehyde-Free Alcohol, 849 Aldehydes and Ketones, 816 Hydroxylamine Method, 816 Hydroxylamine/Tert-Butyl Alcohol Method, 816... 

Fig. 3.5 Selective reduction of 10-undecylenic acid to the aldehyde in one step.

CH2 = CH(CH2)8CHO, ChH20O, Mr 168.28, bp0,4kPa 103 °C, c%1 0.8496, < 1.4464, was identified, e.g., in coriander leaf extract [20]. It is a colorless liquid with a fatty-green, slightly metallic, heavy-flowery odor. The aldehyde can be synthesized from undecylenic acid, for example, by hydrogenation of the acid chloride (Rosen-mund reduction) or by reaction with formic acid in the vapor phase in the presence of titanium dioxide. In perfumery, 10-undecenal is one of the aldehydes essential for creating the aldehydic note. ... 

Undecylenic acid is important as a starting material for a number of fragrance materials, some of which are shown in Figure 4.76. The two aldehydes are obtained by simple functional-group manipulation. Both are known by trivial, and somewhat confusing, names in the industry 10-Undecenal as Aldehyde Cll undecylenic or simply Aldehyde Cl 1, and undecanal as Aldehyde Cll undecylic. The fact that the term... 

Synonyms Aldehyde C-11 undecylenic Hendecenal 1-Undecen-10-al Undecen-10-al Undecylenaldehyde... 

Boukherroub R, Morin S, Wayner DDM, Bensebaa F, Sproule Gl, Baribeau JM, Lockwood DJ (2001) Ideal passivation of luminescent porous silicon by thermal, noncatalytic reaction with alkenes and aldehydes. Chem Mater 13 2002-2011 Boukherroub R, Wojtyk JTC, Wayner DDM, Lockwood DJ (2002) Thermal hydrosilylation of undecylenic acid with porous silicon. J Electrochem Soc 149 59-63 Boukherroub R, Petit A, Loupy A, Chazalviel JN, Ozanam F (2003) Microwave-assisted chemical functionalization of hydrogen-terminated porous silicon surfaces. J Phys Chem B 107 13459-13462... 

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