Hydrocarbons, hydrocarbon ethylene derivatives, synthesi

Synthesis of hydrocarbons from ethylene derivatives Alkylation of thiophenes with olefins... 

Synthesis of isomeric hydrocarbons from ethylene derivatives s. 13, 696 Rearrangement C C- GHCR... 

Ethylene An alkene (unsaturated aliphatic hydrocarbon) with two carbon atoms, CH2=CH2. A colorless, highly flammable gas with sweet odor (autoignition temperature, 543°C). Derived by thermal cracking of hydrocarbon gases or from synthesis gas. Used as monomer in polymer synthesis, refrigerant, and anesthetic. Also called Ethene. 

Stannous fluoride Knoevenagel condesation Synthesis of ethylene derivatives from aldehydes and hydrocarbons... 

Relatively non-toxic tris(trimethylsilyl)silane performs the same function as Bu3SnH in standard radical-chain reactions, such as hydrocarbon synthesis from ethylene derivs. and iodides. E A mixture of cyclohexyl iodide, acrylonitrile, and 1.2 eqs. tris(trimethylsilyl)silane in toluene heated at 70-90° for 4-5 h in the presence of a little AIBN product. Y 90%. Regioselectivity may also be enhanced, and reaction times... 

Hydrocarbons from acoxy compounds frans-Ethylene derivatives—Stereospecific synthesis... 

Ethylene and styrene derivatives react with various propargylic silyl ethers in the presence of zirconocene(II) to afford allenic products in high yield (Scheme 5.7). For example, substrate 67 was transformed into the trisubstituted allene hydrocarbon 68 in 93% yield under the reaction conditions [20]. In the synthesis of various tetraalkylated allenes, in which several of the alkyl substituents also contained triple bonds, allowing these substrates to be cydized intramolecularly into aromatic com-... 

Propylene is a colorless, flammable gas that follows ethylene as the second simplest alkene hydrocarbon. It has an odor similar to garlic and has wide use in the chemical industry as an intermediate in the synthesis of other derivatives such as polypropylene, propylene oxide, isopropyl alcohol, acetone, and acrylonitrile. The production of propylene is similar to ethylene and is obtained through steam cracking of hydrocarbon feedstocks. Steam cracking is a process used to break molecules into smaller molecules by injecting the catalysts with steam. 

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