hetero-cyclic
1hetero — /het euh roh /, adj., n., pl. heteros. adj. 1. Chem. of or pertaining to an atom other than carbon, particularly in a cyclic compound. 2. Informal. heterosexual. n. 3. Informal. a heterosexual person. [1930 35 for def. 2; (in def. 1) by… …
2heterocyclic — heterocycle /het euhr euh suy keuhl/, n. /het euhr euh suy klik, sik lik/, adj. Chem. 1. of or pertaining to the branch of chemistry dealing with cyclic compounds in which at least one of the ring members is not a carbon atom (contrasted with… …
3heterocyclic — [het΄ər ōsīk′lik] adj. [ HETERO + CYCLIC] of or relating to certain cyclic compounds with a ring composed of carbon atoms and those of any other element or elements …
4Diels–Alder reaction — Named after Otto Paul Hermann Diels Kurt Alder Reaction type Cycloaddition Reaction …
5Cheletropic reaction — Pericyclic Reactions Cheletropic reactions are a type of pericyclic reaction. A pericyclic reaction is one that involves a transition state with a cyclic array of atoms and an associated cyclic array of interacting orbitals. A reorganization of σ …
6heterocyclic compound — Any of a class of organic compounds whose molecules contain one or more rings of atoms with at least one atom (the heteroatom) being an element other than carbon, most frequently oxygen, nitrogen, or sulfur. As in regular cyclic hydrocarbons,… …
7Diels-Alder reaction — The Diels Alder reaction is an organic chemical reaction (specifically, a cycloaddition) between a conjugated diene and a substituted alkene, commonly termed the dienophile, to form a substituted cyclohexene system. [cite journal author = Diels,… …
8peptide — A compound of two or more amino acid s in which a carboxyl group of one is united with an amino group of another, with the elimination of a molecule of water, thus forming a p. bond, –CO–NH–; i.e., a substituted amide. Cf.:eupeptide bond …
9Heterocyclic compound — Heterocyclic compounds are organic compounds containing at least one atom of carbon, and at least one element other than carbon, such as sulfur, oxygen or nitrogen within a ring structure .cite book author = Eicher, T.; Hauptmann, S. title = The… …
10Michael Veith (Chemiker) — Michael Veith demonstriert die Selbstentzündung nanoskaliger Eisenpartikel Michael Veith (* 9. November 1944 in Görlitz) ist ein deutscher Chemiker. Er ist Wissenschaftlicher Geschäftsführer am INM – Leibniz Institut für Neue Materialien in… …
