Friedrich, E. C.; Niyati-Shirkhodaee, F. Regioselectivity and Solvent Effects in Cyclopropanation of Alkadienes. J. Org. Chem. ...
The A race produces alkadienes and alkatrienes (derivatives of fatty acids) wherein n is an odd number 23 through 31. The B ... see vegetable oil refining). Botryococcenes are preferred over alkadienes and alkatrienes for hydrocracking as botryococcenes ... The vast majority of these hydrocarbons are botryocuccus oils: botryococcenes, alkadienes and alkatrienes. Transesterification ...
Alkadienes are acyclic branched or unbranched hydrocarbons having two carbon-carbon double bonds. Alkadienes are also known as ...
The book also described 16 original methods of industrial synthesis and polymerization of dialkenes (alkadienes). In 1910s, ...
... alkadienes MeSH D02.455.326.271.665.146.240 --- butadienes MeSH D02.455.326.271.665.146.280 --- chloroprene MeSH D02.455. ...
The structure of a PAH influences whether and how the individual compound is carcinogenic.[51][55] Some carcinogenic PAHs are genotoxic and induce mutations that initiate cancer; others are not genotoxic and instead affect cancer promotion or progression.[55][56] PAHs that affect cancer initiation are typically first chemically modified by enzymes into metabolites that react with DNA, leading to mutations. When the DNA sequence is altered in genes that regulate cell replication, cancer can result. Mutagenic PAHs, such as benzo[a]pyrene, usually have four or more aromatic rings as well as a "bay region", a structural pocket that increases reactivity of the molecule to the metabolizing enzymes.[57] Mutagenic metabolites of PAHs include diol epoxides, quinones, and radical PAH cations.[57][58][59] These metabolites can bind to DNA at specific sites, forming bulky complexes called DNA adducts that can be stable or unstable.[53][60] Stable adducts may lead to DNA replication errors, while unstable ...
In systematic chemical nomenclature, alkynes are named with the Greek prefix system without any additional letters. Examples include ethyne or octyne. In parent chains with four or more carbons, it is necessary to say where the triple bond is located. For octyne, one can either write 3-octyne or oct-3-yne when the bond starts at the third carbon. The lowest number possible is given to the triple bond. When no superior functional groups are present, the parent chain must include the triple bond even if it is not the longest possible carbon chain in the molecule. Ethyne is commonly called by its trivial name acetylene.. In chemistry, the suffix -yne is used to denote the presence of a triple bond. In organic chemistry, the suffix often follows IUPAC nomenclature. However, inorganic compounds featuring unsaturation in the form of triple bonds may be denoted by substitutive nomenclature with the same methods used with alkynes (i.e. the name of the corresponding saturated compound is modified by ...