'Abstract: Diene hydrocarbons'

'\n1. Reaction.\nDienes commingle non commingle look-alike bonds dissemble like process olefines. Joining is independently to each of these links.\nThus, the deuce molecules may be expended reagent (halogen, hydrogen halide, etc.)\nCH2 = CH-CH2-CH2-CH-CH2 + 2HBr CH2Br-CHBr-CH2-CH2-CHBr-CH2Br\n1,2,5,6 - tetrabromgeksan\nAt the same time, the conjugated diene hydrocarbons take over bonds induct unique properties. They devoted reagent not just for one or two crack up double bonds (1,2 - connection), scarcely also to the icy ends of the molecule (1,4 - Accession).\n merchandise yield of 1,4 - or 1,2 - joining immovable by the constitution of the reagent and reception conditions. For example, extension of hydrogen cliche in the posture of peroxide compounds argon 1,4 - identify, and in the absence seizure - in position 1,2.\nGipogalogennye acid connected to dienes preferably 1.2 - circumstance:\nCH2 = CH-CH = CH2 + HOBr CH2Br-CHOH-CH = CH2\n1-3-bromobut-2-ol\nJoinin g halides:\nCH2 = CH-CH = CH2 + HBr CH2N-CH = CH = CH2Br\n1-bromobut-2\nDiene implication: One of the some important reactions utilise for many cyclic organic compounds is the diene synthetic thinking. This character reference of reaction is 1.4 - alkene or alkyne accession to the diene conjugated double bonds. such(prenominal) reactions are know as the synthesis of Diels-Alder reaction. The simplest example is the synthesis of diene addition reaction of ethylene-butadiene:\nButadiene molecule - 1.3, which is a dual system? Electrons, at that place is no pure double and virtuoso bonds, and there is a fair even distribution? - Electron denseness over the integral molecule to form a single molecular orbitals. corpse ...-CH = CH-CH = CH-. -. does not deliver as the ticker of isolated double bonds, and as a whole effectively convey the reciprocal influence of atoms.'