A-octene

Lead tetraacetate reacts with A -octen-l-ol to give some five-membered ether (15%) product and almost no six-membered ether, but interestingly, 10-11% each of the two 2-substituted oxocanes (122) and (123) are formed (73HCA3056). However, this reaction does not appear to be of preparative value. 

Write structural formulas for cis-4-octene and trans-A-octene. 

Isonurization of dienes. This strong base effects isomerization of 1,5- or 1,3-cyclooctadiene to cij-bicyclo[3.3.0]-A -octene (5) in 50-65% yield (stirred in an autoclave at 175° for 22 hrs.). In the case of 1,3-cyclooctadiene, isomerization to... 

AI3-28403 Caprylene 1-Caprylene EINECS 203-893-7 HSDB 1084 Octene Octene-1 a-Octene 1-Octene Octylene 1-Octylene n-1-Octene NSC 8457. Intermediate for surfactants and specialty industrial chemicals. Liquid mp = -101.7° bp = 121.2°. 0 = 0.7149 insoluble in H2O. slightly soluble in CQ4, soluble in Et20. MezCO. CeHe, very soluble in CHCI3. Air Products Chemicals Inc. Chevron Ethicon Inc. Shell Sigma-Aldrich Fine Chem. Texaco. 

For evaluation of catalytic efficiency, the specific reaction employed was the hydrogenation of a-octene-1 in ethanol solution. The reference material chosen was Harshaw 0104 P (a nickel catalyst on kieselguhr manufactured for olefin hydrogenations). For both catalysts, the conversion of octene-1 to octane was measured by gas-liquid chromatography (GLC). The results of the catalytic activity measurements indicated that the PEO-protected nickel catalyst is comparable to the commercial Harshaw product. In addition, it could have several advantages, including convenience and greatly increased shelf life. 

SOLUTION (a) Octene, like octane, indicates an eight-carbon chain. The chain... 

Thermal degradation of blends based on recycled PP and an elastomeric additive, ethylene/ a-octene copolymer (EOC) or synthetic rubber, in low concentration is usually a one-step process and can be kinetically described by using the autocatal)U ic model [a.3]. Figures 43 and 44 show the dynamic TG results obtained. 

Octene comonomer slow cooled A Octene comonomer quenched... 

COT is prepared by the polymerization of ethyne at moderate temperature and pressure in the presence of nickel salts. The molecule is non-planar and behaves as a typical cyclic olefin, having no aromatic properties. It may be catalytically hydrogenated to cyclo-octene, but with Zn and dil. sulphuric acid gives 1,3,6-cyclooclairiene. It reacts with maleic anhydride to give an adduct, m.p. 166 C, derived from the isomeric structure bicyclo-4,2,0-octa-2,4,7-triene(I) ... 

For molecules similar to safrole or allylbenzene we take the work done on any terminal alkene such as 1-heptene, 1 octene. Another term to look for is olefin which is a term for a doublebond containing species. What we then look for are articles about these olefins where the functional groups we are looking for are formed. Articles with terminology like methyl ketones from (P2P), ketones from , amines from etc. Or when we want to see about new ways to aminate a ketone (make final product from P2P) we look for any article about ketones where amines are formed. Sound like science fiction to you Well, how do you think we came up with half the recipes in this book It works ... 

A highly diastereoselective alkcnylation of c/s-4-cyclopentene-l,3>diols has been achieved with 0-protected (Z)-l-iodo-l-octen-3-ols and palladium catalyst (S. Torii, 1989). The ( )-isomers yielded 1 1 mixtures of diastcrcomcric products. The (Z)-alkenylpalladium intermediate is thought to undergo sy/i-addition to the less crowded face of the prochiral cyclopentene followed by syn-elimination of a hydropalladium intermediate. 

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]. ... 

Tnmethyl 1 butene gives only (CH3)3CC=CH2 1 Octene gives a mixture of... 

Other Dimer Olefins. Olefins for plasticizer alcohols are also produced by the dimerization of isobutene [115-11-7] 4 8 codimerization of isobutene and / -butene [25167-67-3]. These highly branched octenes lead to a highly branched isononyl alcohol [68526-84-1] product. BASE, Ruhrchemie, ICl, Nippon Oxocol, and others have used this source. 

Content of Ot-Olefin. An increase in the a-olefin content of a copolymer results in a decrease of both crystallinity and density, accompanied by a significant reduction of the polymer mechanical modulus (stiffness). Eor example, the modulus values of ethylene—1-butene copolymers with a nonuniform compositional distribution decrease as shown in Table 2 (6). A similar dependence exists for ethylene—1-octene copolymers with uniform branching distribution (7), even though all such materials are, in general, much more elastic (see Table 2). An increase in the a-olefin content in the copolymers also results in a decrease of their tensile strength but a small increase in the elongation at break (8). These two dependencies, however, are not as pronounced as that for the resin modulus. 

Other Higher Oleiins. Linear a-olefins, such as 1-hexene and 1-octene, are produced by catalytic oligomerization of ethylene with triethyl aluminum (6) or with nickel-based catalysts (7—9) (see Olefins, higher). Olefins with branched alkyl groups are usually produced by catalytic dehydration of corresponding alcohols. For example, 3-methyl-1-butene is produced from isoamyl alcohol using base-treated alumina (15). 

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