sterically hindered

sterically hindered
просторово утруднений

English-Ukrainian analytical chemistry dictionary. 2013.

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  • Hindered amine — Hindered amines are chemical compounds containing an amine functional group surrounded by a crowded steric environment. They have uses such as gas scrubbing, as stabilizers against light induced degradation of polymers, and as reagents for… …   Wikipedia

  • Wittig reaction — The Wittig reaction is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide (often called a Wittig reagent) to give an alkene and triphenylphosphine oxide. [cite journal author = Georg Wittig, Ulrich Schöllkopf journal …   Wikipedia

  • Metal bis(trimethylsilyl)amides — The bis(trimethylsilyl)amide ligand Metal bis(trimethylsilyl)amides are coordination complexes of a metal cation with bis(trimethylsilyl)amide ligands. These ligands are often denoted hmds (from hexamethyldisilazide). These compounds are part of… …   Wikipedia

  • Asymmetric induction — (also enantioinduction) in stereochemistry describes the preferential formation in a chemical reaction of one enantiomer or diastereoisomer over the other as a result of the influence of a chiral feature present in the substrate, reagent,… …   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

  • Amine — For other uses, see Amine (disambiguation). Primary amine Secondary amine Tertiary amine …   Wikipedia

  • Aldol reaction — The aldol reaction is a powerful means of forming carbon–carbon bonds in organic chemistry.[1][2][3] Discovered independently by …   Wikipedia

  • Lithium diisopropylamide — Chembox new Name = Lithium diisopropylamide ImageFile = lithium diisopropylamide.png ImageSize = 150px ImageName = Lithium diisopropylamide IUPACName = Lithium diisopropylamide OtherNames = LDA Section1 = Chembox Identifiers SMILES = CC(C) [N ]… …   Wikipedia

  • Glycerol ester of wood rosin — Glycerol ester of wood rosin, glyceryl abietate, or Ester gum is a food additive used as an emulsifier and stabiliser, to keep oils in suspension in water. [ [http://www.inchem.org/documents/jecfa/jecmono/v35je05.htm WHO Food Additives Series 35 …   Wikipedia

  • Chemical bond — A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite charges, either between electrons and… …   Wikipedia

  • Piperidine — chembox References= [ [http://www.ilo.org/public/english/protection/safework/cis/products/icsc/dtasht/ icsc03/icsc0317.htm International Chemical Safety Card 0317] ] Name = Piperidine ImageFileL1 = Piperidine.svg ImageSizeL1 = 100px ImageFileR1 …   Wikipedia


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