2- -l-octene

The azabicyclohexene 30 (from 19a and diazomethane) and the ethoxycarbonyl derivative 31 with DMAD at 100° gave the 8-azabi-cyclo[3,2,l]octenes 33 and 34. The authors87 88 postulate that the... 

Reductive dehalogeuation of alkyl halides. Lithium aluminum hydride has commonly been used only for reductive dchalogenation of reactive substrates organotin hydrides, for example tri- -btityltin hydride (I. 1192-1193 2, 424 3, 294), have been used for reduction of inert halides. Recently JeflToid ei al. have reported that supposedly inert halides are reducible by lithium aluminum hydride. Thus the vinyl halide (I) is reduced to (2, endb-2-phenylbicyclo[3.2. l]octene-3) by lithium aluminum hydride in refluxing ether (24 hr.). 3-Bromobicyclo[3.2.l]octene-2 is reduced to the parent... 

Ally lie oxidation. Cyclohexene is oxidized to cyclohex-2-enyl acetate in 75% yield by the reagent at 70° when catalyzed by potassium bromide (ca. 8 hr.). The reaction is slow in the absence of a catalyst. Norbomene is unreactive, but bicyclo[3.2. l]octene-2 is oxidized rapidly to about an equal mixture of endo- and < xo-bicyclo[3.2.1]oct-3-ene-2-yl acetates. Acyclic olefins or cyclic olefins prone to allylic rearrangement give a complex mixture of allylic acetates. 

From reaction of the bromobicyclo[3,2,l]octene (354) with potassium t-butoxide in dry DMSO in the presence of styrene, two adducts were isolated. The strained allene (355) may be the intermediate. ... 

It should be noted that there are two ways of incorporating bicyclo-2,2,l-octene units into polymers. It is necessary to consider the distributions of the asymmetric centers present in polymers derived from this monomer in addition to considering the cis and trans structures present, to completely interpret the spectra of polymers derived from bicyclo-2,2,1-octane. Polymers derived from unsymmetrical cyclic olefins, in general, should not be e3q>ected to be stereoregular. However, cmr and pmr studies of polymers derived from 1-methyl cyclobutene and 1-methyl-trans-cyclooctene have predominantly head-tail structures [93,94]. Since they contain both cis- and trans- inits, they can be considered to be stereoregular copolymers. 

Under CO pressure in alcohol, the reaction of alkenes and CCI4 proceeds to give branched esters. No carbonylation of CCI4 itself to give triichloroacetate under similar conditions is observed. The ester formation is e.xplained by a free radical mechanism. The carbonylation of l-octene and CCI4 in ethanol affords ethyl 2-(2,2,2-trichloroethyl)decanoate (924) as a main product and the simple addition product 925(774]. ... 

Preparation of 2-Fluoro-4-methylacetamlide, 166 Fluorination with A-ferf-Butyl-Al-fluorobenzenesulfonamide Preparation of 1-Fluoro-l-octene, 166 Fluorination with A-Fluoro-2,4,6-trimethylpyridinium Triflate Preparation of Diethyl Fluorophenylmalonate, 166 Fluorination with Xenon Difluoride... 

While unmodified xanthene ligands (compound a in Figure 5.2-4) show highly preferential solubility in the organic phase in the biphasic l-octene/[BMIM][PFg] mixture even at room temperature, the application of the guanidinium-modified xanthene ligand (compound b in Figure 5.2-4) resulted in excellent immobilization of the Rh-catalyst in the ionic liquid. 

In addition to its effect on stability, delocalization of the unpaired electron in the allyl radical has other chemical consequences. Because the unpaired electron is delocalized over both ends of the nr orbital system, reaction with Br2 can occur at either end. As a result, allylic bromination of an unsymmetrical alkene often leads to a mixture of products. For example, bromination of 1-octene gives a mixture of 3-bromo-l-octene and l-bromo-2-octene. The two products are not formed in equal amounts, however, because the intermediate allylic radical is... 

In a study concerned with the synthesis of prostaglandins, it was reported that the anion of 3-phenylsulfinyl-l-octene underwent addition to 2-cyclopentenone to give a y-1,4-adduct (57%), which appeared to be a single diastereomer by 13C NMR16... 

CN 5-[Hexahydro-5-hydroxy-4-(3-hydroxy-4-methyl-l-octen-6-ynyl)-2(l//)-pentalenylidene]pentanoic acid... 

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]. 

The strained c ,traws-l,3-cyclooctadiene 1 cyclizes quantitatively at 80 °C to the bicy-clo[4.2.0]octene 2 (equation 3). The higher homologue 3 exists in equilibrium with the bicyclic isomer 4 above 175 °C (equation 4)4. 

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