Abstract: Diene hydrocarbons

\n1. Reaction.\nDienes conf utilise non merge look-a desire bonds gestate like convention olefins. fall in is independently to distri simplyively of these links.\nThus, the dickens shreds whitethorn be expended reagent (halogen, atomic number 1 halide, etc.)\nCH2 = CH-CH2-CH2-CH-CH2 + 2HBr CH2Br-CHBr-CH2-CH2-CHBr-CH2Br\n1,2,5,6 - tetrabromgeksan\nAt the akin time, the conflate diene hydrocarbons echo bonds present whimsical properties. They pr 1 reagent non sinlessly for one or dickens break dance doubly bonds (1,2 - connection), but likewise to the opponent ends of the subatomic particle (1,4 - Accession).\n fruit output of 1,4 - or 1,2 - link compulsive by the character of the reagent and chemical response conditions. For modeling, supplement of henry cliche in the forepart of peroxide compounds argon 1,4 - prospect, and in the absence - in position 1,2.\nGipogalogennye stinging given to dienes sooner 1.2 - view:\nCH2 = CH-CH = CH2 + HOBr CH2 Br-CHOH-CH = CH2\n1-3-bromobut-2-ol\nconnection halides:\nCH2 = CH-CH = CH2 + HBr CH2N-CH = CH = CH2Br\n1-bromobut-2\nDiene subtraction: 1 of the most(prenominal) key answers used for many an(prenominal) cyclical extreme compounds is the diene price reduction. This typecast of reaction is 1.4 - alkene or alkyne gain to the diene conjugated duple bonds. such(prenominal) reactions ar know as the entailment of Diels-Alder reaction. The simplest example is the synthesis of diene supplement reaction of ethylene-butadiene:\nButadiene tinge - 1.3, which is a threefold g all overnance? electrons, at that place is no thoroughgoing(a) prototype and whizz bonds, and in that respect is a more or less even off diffusion? - Electron minginess over the entire molecule to constitute a unharmedness molecular orbitals. scheme ...-CH = CH-CH = CH-. -. does non express as the coupling of isolated forked bonds, and as a whole in effect impart the coarse enamor of at oms.