transannular bond

См. также в других словарях:

• Atrane — An Atrane is a tricyclic molecule with three five membered rings. It has a transannular dative bond by a nitrogen atom, depicted as A. The name atrane was first proposed by Mikhail Grigorievich Voronkov.Various atranes are named depending on the… …   Wikipedia

• Cyclol — Figure 1: In the classic cyclol reaction, two peptide groups are linked by a N C’ bond, converting the carbonyl oxygen into a hydroxyl group. Although this reaction occurs in a few cyclic peptides, it is disfavored by free energy, mainly because… …   Wikipedia

• Tetrasulfur tetranitride — Tetrasulfur tetranitride …   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

• Hipótesis del ciclol — Reacción del ciclol clásica. Dos grupos peptídicos se unen por enlace N C , convirtiendo el oxígeno carbonílico en una grupo hidroxilo. Si bien esta reacción ocurre en unos pocos péptidos cíclicos, es desfavor …   Wikipedia Español

• Johnson–Corey–Chaykovsky reaction — The Johnson–Corey–Chaykovsky reaction (sometimes referred to as the Corey–Chaykovsky reaction or CCR) is a chemical reaction used in organic chemistry for the synthesis of epoxides, aziridines, and cyclopropanes. It was discovered in 1961 by A.… …   Wikipedia

• Ring strain — is an organic chemistry term that describes the destabilization of a cyclic molecule such as a cycloalkane due to the non favorable high energy spatial orientations of its atoms. Non cyclic molecules do not exhibit ring strain because their… …   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

• Annulation — (derived from annular, occasionally annelation) in organic chemistry is a chemical reaction in which a new ring is constructed on another molecule (often another ring). [GoldBookRef|title=annulation|url=http://goldbook.iupac.org/A00367.html… …   Wikipedia

• atrane — noun Any of a class of tricyclic cagelike heterocycles having a transannular dative bond between a nitrogen and another heteroatom …   Wiktionary

• Through-Space-Wechselwirkung — [θru: speɪs ; engl. through space = durch den Raum]: Bez. für intramol. Wechselwirkungen räumlich getrennter Atomorbitale, die sich über den Raum hinweg (z. B. transannular) überlappen. Vgl. Through Bond Wechselwirkung …   Universal-Lexikon