Dimethyl-6-octenal

Dimethyl-1,3-Dioxane-4,6-dione (Meldrum s Acid) Malonic acid, cyclic isopropylidene ester (8) 1,3-Dioxane-4,6-dione, 2,2-dimethyl- (9) (2033-24-1) Ethylenediammonium diacetate 1,2-Ethanediamine diacetate (9) (38734-69-9) (R)-Citronellal 6-Octenal, 3,7-dimethyl-, (R)-(+)- (8,9) (2385-77-5)... 

AI3-00203 Citronella Citronellal Citronellel 2,3-Dihydrocitral 3,7-Dimethyl-6-octenal 3,7-Dimethyl-6-octen-1-al D-Rhodinal EINECS 203-376-6 FEMA No, 2307 HSDB 594 NSC 46106 6-Octenal, 3,7-dimethyl- Rhodinal. Used in soap perfumery, manufacture of hydroxycitronellal, an insect repellant. Oil bpi = 47° d = 0.848-0,866 [a)S 11.50°. Lancaster Synthesis Co. Penta Mfg. PMC. 

Synonyms ( )-Citronallal 3,7-Dimethyl-6-octenal 3,7-Dimethyl-6-octen-1-al Rhodinal... 

Citronellal diisotridecyl acetal CAS 67923-82-4 Properties Flash pt. 116 C Toxicoiogy TSCA listed Uses Synthetic perfumery material Manuf./Distrib. Grau Aromatics http //www.grau-aromatics.de Citronellal dimethyl acetal CAS 923-69-3 EINECS/ELINCS 213-098-7 Synonyms 8,8-Dimethoxy-2,6-dimethyloct-2-ene 3,7-Dimethyl-6-octenal dimethyl acetal Uses Fragrance in cosmetics Manuf./Distrib. Penta Mfg. http //www.pentannfg.com... 

Dimethyl-6-octenal dimethyl acetal. See Citronellal dimethyl acetal... 

CH3CCH3 + HCCH2CH2CHCH2CH3 2 6 Dimethyl 2 octene Acetone 4 Methylhexanal (91 %)... 

An alternative view of these addition reactions is that the rate-determining step is halide-assisted proton transfer, followed by capture of the carbocation, with or without rearrangement Bromide ion accelerates addition of HBr to 1-, 2-, and 4-octene in 20% trifluoroacetic acid in CH2CI2. In the same system, 3,3-dimethyl-1-butene shows substantial rearrangement Even 1- and 2-octene show some evidence of rearrangement, as detected by hydride shifts. These results can all be accoimted for by a halide-assisted protonation. The key intermediate in this mechanism is an ion sandwich. An estimation of the fate of the 2-octyl cation under these conditions has been made ... 

Xtrl-butyldimethylsilyloxy)-l-chlom- or -1 -methoxy-3,5-dimethyl-t-octen-4-ol... 

Aus 7-Oxo-octen-(l) entsteht bei -2,7 V 1,2-Dimethyl-cyclohexanol (50% d.Th.) in 1,4-Dioxan mit wenig Methanol und Tetraathylammoniumtosylat als Leitsalz1. 

Biochemisch werden Aldehyde i. a. zu den entsprechenden Alkoholen reduziert, wobei sie gelegentlich der mikrobiologischen Cannizzaro-Disproportionierung zu Carbonsaure und Alkohol unterliegen konnen [z. B. 3,7-Dimethyl-octen-(6)-al (Citronellal) zu 8-Hydroxy -2,6-dimethyl-octen-(2) und 3,7-Dimethyl-octen-(6)-sdure]1. 

Hydroxy-3,7-dimethyl-ocladien- 8-Hydroxy-2,6-dimethyl-octen-(2)... 

Oxo-4-[6-carboxy-hexen-(2)-yl]-3-[3-hydroxy-octen-(l)-yl]- 723 3-Oxo-2,4-dimethyl- 622 3-Oxo-1,5-diphenyl- 669... 

The addition of various Kolbe radicals generated from acetic acid, monochloro-acetic acid, trichloroacetic acid, oxalic acid, methyl adipate and methyl glutarate to acceptors such as ethylene, propylene, fluoroolefins and dimethyl maleate is reported in ref. [213]. Also the influence of reaction conditions (current density, olefin-type, olefin concentration) on the product yield and product ratios is individually discussed therein. The mechanism of the addition to ethylene is deduced from the results of adsorption and rotating ring disc studies. The findings demonstrate that the Kolbe radicals react in the surface layer with adsorbed ethylene [229]. In the oxidation of acetate in the presence of 1-octene at platinum and graphite anodes, products that originate from intermediate radicals and cations are observed [230]. 

Early attempts by Pino and Giacomelli to resolve racemic 3,7-dimethyl-l-octene (37) by treatment with 0.3 equiv. of triisobutylaluminum in the presence of bis[(S)-seobutylsaHcyhdeneiminejnickel Ni[(S)-seobusal]2 and subsequent hydrolysis gave (S)-2,6-dimethyloctane (38) with an enantiomerical excess of 1.2% along with the unreacted starting material (S)-37 with 1.8% ee, as judged by optical rotation (Schemes 2-17 and 2-18) [28]. 

S)-3,7-Dimethyl-2-oxo-6-octene-l,3-diol (39) was recently identified as the aggregation pheromone of the Colorado potato beetle (Leptinotarsa decem-lineata), and synthesized by Oliver et al., starting from (S)-linalool [86]. An improved synthesis of (S)-39 by Mori is shown in Scheme 57 [87]. Enzymatic acetylation of ( )-2,3-epoxynerol (A) with vinyl acetate and lipase PS gave B together with C. The acetate B was converted to a multi-gram quantity of (S)-39 according to Oliver [86]. 

The nonacarbonyldiiron-induced transformation of oxazabicyclo[2.2.2] octenes (12) into condensed azetidinones is intriguing mechanistically but will obviously have limited synthetic application (Scheme 15).37 The /(-lactam (14a), among other products, is isolated directly from the iron carbonyl reaction but the dimethyl analog (14b) is obtained by pyrolysis of an isolable intermediate <7-7r-allyl complex (13b). 

The first example of a heterogeneous catalyst able to metathesize olefinic esters was recently reported (92). The combination of Re207/ (CH3)4Sn at an olefin/Re/Sn molar ratio of 219/6/1 converted methyl 4-pentenoate at 50°C in 51% conversion to ethylene and the corresponding dimethyl ester of 4-octene-l,8-dioic acid. This reaction exhibited a high degree of selectivity (>99%), and in the absence of (CH3)4Sn the rhenium catalyst was inactive (90). 

Dimethyl-6-octen-l-ol, c275 Dimethylolpropionic acid, b201 Dimethyl 3-oxoglutarate, d325... 

Early attempts at an asymmetric hydroalumination utilized a chiral -butylsalicylidenime complexed to a nickel(n) complex 117.128 When racemic 3,7-dimethyl-1-octene 116 was treated with 0.2mol% of the nickel complex 117 and 0.3 equiv. of TIBA at 0°C, followed by hydrolysis, the alkene 118 with 1.2% ee was obtained. The unreacted olefin 119 was recovered and found to have an ee of 1.8% (Scheme 14). 

ASYMMETRIC HYDROGENATION OF ALLYLIC ALCOHOLS USING BINAP-RUTHENIUM COMPLEXES (S)-(-)-CITRONELLOL (6-Octen-1-ol, 3,7-dimethyl, (S)-)... 

---