- selective photochemical reaction
- селективная фотохимическая реакция
English-russian dictionary of physics. 2013.
English-russian dictionary of physics. 2013.
DeMayo reaction — The DeMayo reaction is a photochemical reaction in which the enol of a 1,3 diketone reacts with an alkene (or another species with a C=C bond) and the resulting cyclobutane ring undergoes a retro aldol reaction to yield a 1,5 diketone [1]: The… … Wikipedia
Prins reaction — are formed. HistoryThe original reactants employed by Dutch chemist Hendrik Jacobus Prins in his 1919 publication were styrene ( scheme 2 ), pinene, camphene, eugenol, isosafrole and anethole. In 1937 the reaction was investigated as part of a… … Wikipedia
Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… … Universalium
eye, human — ▪ anatomy Introduction specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit The eye is protected from mechanical injury… … Universalium
electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… … Universalium
Alkene — This article is about the chemical compound. For the material, see Olefin fiber. Not to be confused with Alkane or Alkyne. A 3D model of ethylene, the simplest alkene. In organic chemistry, an alkene, olefin, or olefine is an unsaturated ch … Wikipedia
heterocyclic 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,… … Universalium
Carbonylation — refers to reactions that introduce carbon monoxide into organic and inorganic substrates. Carbon monoxide is abundantly available and conveniently reactive, so it is widely used as a reactant in industrial chemistry. Contents 1 Organic chemistry… … Wikipedia
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations … Universalium
Supramolecular chemistry — refers to the area of chemistry that focuses on the noncovalent bonding interactions of molecules. [cite journal | author=Lehn JM | title=Supramolecular chemistry | journal=Science | volume=260 | issue=5115 | year=1993 | pages=1762–3 |… … Wikipedia