- meta-directing group
- 1) Химия: заместитель, направляющий в метаположение2) Нефть: заместитель, направляющий в мета-положение
Универсальный англо-русский словарь. Академик.ру. 2011.
Универсальный англо-русский словарь. Академик.ру. 2011.
Electrophilic aromatic substitution — or EAS is an organic reaction in which an atom, usually hydrogen, appended to an aromatic system is replaced by an electrophile. The most important reactions of this type that take place are aromatic nitration, aromatic halogenation, aromatic… … Wikipedia
carboxylic acid — Chem. any organic acid containing one or more carboxyl groups. [1900 05; CARBOXYL + IC] * * * Any organic compound with the general chemical formula ―COOH in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond to make a… … Universalium
Benzoic acid — Benzoic acid … Wikipedia
Fries rearrangement — The Fries rearrangement, named for the German chemist Karl Theophil Fries, is a rearrangement reaction of a phenyl ester to a hydroxy aryl ketone by catalysis of lewis acids. [cite journal title = Über Homologe des Cumaranons und ihre Abkömmlinge … Wikipedia
Povarov reaction — [ frame|Scheme 3 Four component Povarov reaction. In order to clarify the role of the lewis acid, a solid scandium nitrogen bond is drawn. Reaction conditions 2 days in acetonitrile at room temperature] The Povarov reaction is a chemical reaction … Wikipedia
Diethyl phthalate — Diethyl phthalate[1] Identifiers CAS number … Wikipedia
ABC Daytime — (ABC D) is a programming block on the ABC Network. The Disney ABC Television Group named Brian Frons the president of the newly created Daytime, Disney ABC Television Group in May 2006. The promotion elevated Frons from his position as head of… … Wikipedia
Stroke — For other uses, see Stroke (disambiguation). Stroke Classification and external resources CT scan slice of the brain showing a right hemispheric ischemic stroke (left side of image). ICD 10 … Wikipedia
Colombia — Colombian, adj., n. /keuh lum bee euh/; Sp. /kaw lawm byah/, n. a republic in NW South America. 37,418,290; 439,828 sq. mi. (1,139,155 sq. km). Cap.: Bogotá. * * * Colombia Introduction Colombia Background: Colombia was one of the three countries … Universalium
motion picture, history of the — Introduction history of the medium from the 19th century to the present. Early years, 1830–1910 Origins The illusion of motion pictures is based on the optical phenomena known as persistence of vision and the phi phenomenon. The first … Universalium
Conflict management — involves implementing strategies to limit the negative aspects of conflict and to increase the positive aspects of conflict at a level equal to or higher than where the conflict is taking place. Furthermore, the aim of conflict management is to… … Wikipedia