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Carbocation — A carbocation (pronEng|ˌkɑrboʊˈkætaɪɒn) is an ion with a positively charged carbon atom. The charged carbon atom in a carbocation is a sextet , i.e. it has only six electrons in its outer valence shell instead of the eight valence electrons that… … Wikipedia
Magic acid — Fluorosulfuric acid antimony pentafluoride 1:1 Other names Magic Acid … Wikipedia
Tiffeneau-Demjanov rearrangement — The Tiffeneau Demjanov rearrangement (TDR) the chemical reaction of 1 aminomethyl cycloalkanols with nitrous acid to form an enlarged cycloketone.Ref|Tiffeneau1937After being in existence for over 65 years, the reaction is popular among organic… … Wikipedia
Tiffeneau–Demjanov rearrangement — The Tiffeneau Demjanov rearrangement (TDR) is the chemical reaction of a 1 aminomethyl cycloalkanol with nitrous acid to form an enlarged cycloketone. The Tiffeneau–Demjanov ring expansion, Tiffeneau–Demjanov rearrangement, or TDR, provides an… … Wikipedia
Wagner–Meerwein rearrangement — A Wagner–Meerwein rearrangement is a class of carbocation 1,2 rearrangement reactions in which a hydrogen, alkyl or aryl group migrates from one carbon to a neighboring carbon.[1][2] Several reviews have been published.[3][4][5] … Wikipedia
Non-classical ion — Non classical ions in organic chemistry are a special type of carbonium ions displaying delocalization of sigma bonds in 3 center 2 electron bonds of bridged systems.[1] The term non classical ion was first used by John D. Roberts in 1951[2][3]… … Wikipedia
Bredt's rule — is an empirical observation in organic chemistry that states that a double bond cannot be placed at the bridgehead of a bridged ring system, unless the rings are large enough, named after Julius Bredt.For example, two of the following isomers of… … Wikipedia
reaction mechanism — Introduction in chemical reactions (chemical reaction), the detailed processes by which chemical substances are transformed into other substances. The reactions themselves may involve the interactions of atoms (atom), molecules (molecule),… … Universalium
