環状化合物、環式化合物

WordNet

create by mixing or combining
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight (同)chemical_compound
put or add together; "combine resources" (同)combine
an enclosure of residences and other building (especially in the Orient)
a whole formed by a union of two or more elements or parts
combine so as to form a whole; mix; "compound the ingredients" (同)combine
calculate principal and interest
composed of more than one part; "compound leaves are composed of several lobes; "compound flower heads"
consisting of two or more substances or ingredients or elements or parts; "soap is a compound substance"; "housetop is a compound word"; "a blackberry is a compound fruit"
of a compound having atoms arranged in a ring structure
recurring in cycles (同)cyclical
conforming to the Carnot cycle
forming a whorl or having parts arranged in a whorl; "cyclic petals"; "cyclic flowers"
marked by repeated cycles
combined into or constituting a chemical compound

PrepTutorEJDIC

(…になるように)〈要素・成分など〉'を'混ぜ合わせる《+『名』+『into』+『名』》;(…から)〈薬など〉'を'調合する,混ぜ合わせて作る《+『名』+『from』(『of』)+『名』》 / 《しばしば受動態で》〈めんどうな事・損害など〉'を'もっとひどくする / 〈利子〉'を'複利で計算する / (…と)話し合いをつける,妥協する《+『with』+『名』》 / 複合の,合成の / 『合成物』,混合物,調合物;化合物 / 複合語,合成語(classroom, heart-to-heartなどをいう)
(異民族の家屋・商館などがある)囲み地区,構内

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/03/17 04:10:40」(JST)

wiki en

In chemistry, a cyclic compound is a compound in which a series of atoms is connected to form a loop or ring.^[1] While the vast majority of cyclic compounds are organic, a few inorganic substances form cyclic compounds as well, including sulfur, silanes, phosphanes, phosphoric acid, and triboric acid. Cyclic compounds may or may not be aromatic. Benzene is a well known example. The term "polycyclic" is used when more than one ring is formed in a single molecule for instance in naphthalene, and the term macrocycle is used for a ring containing more than a dozen atoms.

Cycloheptane, a non-aromatic cyclic compound.
Benzene, a cyclic compound.
Naphthalene, a polycyclic compound.
Porphyrin, a macrocyclic compound.
Pentazole, an inorganic cyclic compound.

Alicyclic compound are named according to the IUPAC system of nomenclature by attaching the prefix cyclo- to the name of the corresponding open chain hydrocarbon possessing the same number of carbon atoms. The common names resemble the IUPAC names. For example: Cyclo pantane, cyclo butane etc....

Ring-closing & opening reactions

Dieckmann ring-closing reaction

Related concepts in organic chemistry are so-called ring-closing reactions in which a cyclic compound is formed and ring-opening reactions in which rings are opened.

Examples of ring-closing reactions:

Ring-closing metathesis
Nazarov cyclization reaction
Ruzicka large ring synthesis
Dieckmann condensation
Wenker synthesis
Radical cyclization

Example of ring-opening reactions:

A general type of polymerization reaction: Ring-opening polymerization
Ring opening metathesis polymerisation

External links

MeSH Polycyclic+Compounds
MeSH Macrocyclic+Compounds

References

^ March, Jerry (1985), Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (3rd ed.), New York: Wiley, ISBN 0-471-85472-7

UpToDate Contents

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English Journal

The Emergence of 2-Oxoglutarate as a Master Regulator Metabolite.

Huergo LF1, Dixon R2.
Microbiology and molecular biology reviews : MMBR.Microbiol Mol Biol Rev.2015 Dec;79(4):419-35. doi: 10.1128/MMBR.00038-15.
The metabolite 2-oxoglutarate (also known as α-ketoglutarate, 2-ketoglutaric acid, or oxoglutaric acid) lies at the intersection between the carbon and nitrogen metabolic pathways. This compound is a key intermediate of one of the most fundamental biochemical pathways in carbon metabolism, the tric
PMID 26424716

A crystalline low molecular weight cyclic organoboron compound for efficient solid state lithium ion transport.

Joshi P1, Vedarajan R, Matsumi N.
Chemical communications (Cambridge, England).Chem Commun (Camb).2015 Oct 18;51(81):15035-8. doi: 10.1039/c5cc04753f. Epub 2015 Aug 27.
We report the synthesis of a crystalline cyclic organoboron compound that shows an anomalous Li-ion conduction behaviour with specific composition and method of insertion of a Li salt. The enhanced ionic conductivity of crystalline boric ester/LiTFSI prepared by the grinding method should be due to
PMID 26310491

Surface structured platinum electrodes for the electrochemical reduction of carbon dioxide in imidazolium based ionic liquids.

Hanc-Scherer FA1, Montiel MA, Montiel V, Herrero E, Sánchez-Sánchez CM.
Physical chemistry chemical physics : PCCP.Phys Chem Chem Phys.2015 Oct 7;17(37):23909-16. doi: 10.1039/c5cp02361k. Epub 2015 Aug 26.
The direct CO2 electrochemical reduction on model platinum single crystal electrodes Pt(hkl) is studied in [C2mim(+)][NTf2(-)], a suitable room temperature ionic liquid (RTIL) medium due to its moderate viscosity, high CO2 solubility and conductivity. Single crystal electrodes represent the most con
PMID 26307480

Japanese Journal

両親媒性カリックス[4]レゾルシンアレーンの複合体形成について

高分子論文集 advpub(0), 2016
NAID 130005125560

Degradation of Peroxynitrite by Simple, Recyclable Selenolanes

Bulletin of the Chemical Society of Japan advpub(0), 2016
NAID 130005124581

Crystal Structure of 4,4′-Bi(3-(1-methylethoxy)-3-cyclobutene-1,2-dione)

X-ray Structure Analysis Online 31(0), 57-58, 2015
NAID 130005114641

Related Pictures

★リンクテーブル★

リンク元	「環式化合物」「環状化合物」
拡張検索	「2-ring heterocyclic compound」「polycyclic compound」「macrocyclic compound」
関連記事	「cyclic」「compound」