- bulky groups
- pl.объёмные группы
Англо-русский словарь промышленной и научной лексики. 2014.
bulky groups
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Persistent carbene — A stable carbene: isolated 1,3 dimesitylimidazol 2 ylidene in a Schlenk flask (stir bar also present). A persistent carbene (also known as stable carbene or Arduengo carbene) is a type of carbene demonstrating particular stability. The best known … Wikipedia
Butyl — In organic chemistry, butyl is a four carbon alkyl radical or substituent group with general chemical formula C4H9, derived from either of the two isomers of butane. The isomer n butane can connect either at one of the two terminal carbon atoms… … Wikipedia
SN1 reaction — The SN1 reaction is a substitution reaction in organic chemistry. SN stands for nucleophilic substitution and the 1 represents the fact that the rate determining step is unimolecular [ L. G. Wade, Jr., Organic Chemistry , 6th ed.,… … Wikipedia
Cheletropic 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 … 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
Melatonin receptor agonists — Drug class ATC code N05CH MeSH D008550 AHFS/Drugs.com … Wikipedia
Intramolecular — in chemistry describes a process or characteristic limited within the structure of a single molecule; a property or phenomenon limited to the extent of a single molecule. Examples * intramolecular hydride transfer (transfer of a hydride ion from… … Wikipedia
Intramolecular reaction — Intramolecular in chemistry describes a process or characteristic limited within the structure of a single molecule, a property or phenomenon limited to the extent of a single molecule. Contents 1 Examples 2 Molecular tethers 3 See also … Wikipedia
Cucurbituril — Computer models of Q5, Q6, and Q7. Top row is the view into the cavity and the bottom is the side view Cucurbiturils are methylene linked macrocyclic molecules made of glycoluril [=C4H2N4O2=] monomers. The oxygen atoms are located along the edges … Wikipedia
Pentane interference — or syn pentane interaction is the steric hindrance that the two terminal methyl groups experience in one of the chemical conformations of n pentane. The possible conformations are combinations of anti conformations and gauche conformations and… … Wikipedia
Nucleophilic substitution — In organic and inorganic chemistry, nucleophilic substitution is a fundamental class of reactions in which an electron nucleophile selectively bonds with or attacks the positive or partially positive charge of an atom or a group of atoms called… … Wikipedia
