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Revision as of 15:13, 9 August 2011 editCheMoBot (talk | contribs)Bots141,565 edits Updating {{chembox}} (no changed fields - added verified revid - updated 'DrugBank_Ref', 'UNII_Ref', 'ChEMBL_Ref', 'ChEBI_Ref', 'KEGG_Ref') per Chem/Drugbox validation (report [[Wikipedia_talk:Wi← Previous edit Latest revision as of 16:21, 27 November 2022 edit undoCrafterNova (talk | contribs)Extended confirmed users16,640 edits +wording +linksTags: Mobile edit Mobile web edit Advanced mobile edit 
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{{chembox {{chembox
| verifiedrevid = 443883679 | verifiedrevid = 443885075
| ImageFile = Isoindol.svg | ImageFile = Isoindol.svg
| ImageSize = 150px | ImageSize = 150px
| ImageName = Skeletal formula | ImageName = Skeletal formula
| ImageFile1 = Isoindole-3D-balls.png | ImageFile1 = Isoindole-3D-balls-2.png
| ImageName1 = Ball-and-stick model | ImageName1 = Ball-and-stick model
| PIN=2''H''-Isoindole<ref>{{cite book |author=] |date=2014 |title=Nomenclature of Organic Chemistry: IUPAC Recommendations and Preferred Names 2013 |publisher=] |pages=213 |doi=10.1039/9781849733069 |isbn=978-0-85404-182-4}}</ref>
|IUPACName=2''H''-Isoindole
|OtherNames= | OtherNames=
|Section1= {{Chembox Identifiers |Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 2282425 | ChemSpiderID = 2282425
| InChI = 1/C8H7N/c1-2-4-8-6-9-5-7(8)3-1/h1-6,9H | InChI = 1/C8H7N/c1-2-4-8-6-9-5-7(8)3-1/h1-6,9H
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| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = VHMICKWLTGFITH-UHFFFAOYSA-N | StdInChIKey = VHMICKWLTGFITH-UHFFFAOYSA-N
| CASNo_Ref = {{cascite|correct|??}}
| CASNo=270-68-8 | CASNo=270-68-8
| UNII_Ref = {{fdacite|correct|FDA}}
| PubChem=3013853
| UNII = PR6T8TL5NT
| ChEBI_Ref = {{ebicite|correct|EBI}}
| PubChem=3013853
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 33179 | ChEBI = 33179
| SMILES = c1cccc2c1cnc2 | SMILES = c1cccc2c1cc2
}} }}
|Section2= {{Chembox Properties |Section2={{Chembox Properties
| Formula=C<sub>8</sub>H<sub>7</sub>N | Formula=C<sub>8</sub>H<sub>7</sub>N
| MolarMass=117.15 g/mol | MolarMass=117.15 g/mol
| Appearance= | Appearance=
| Density= | Density=
| MeltingPt= | MeltingPt=
| BoilingPt= | BoilingPt=
| Solubility= | Solubility=
}} }}
|Section3= {{Chembox Hazards |Section3={{Chembox Hazards
| MainHazards= | MainHazards=
| FlashPt= | FlashPt=
| AutoignitionPt =
| Autoignition=
}} }}
}} }}


In ] and ], '''isoindole''' consists of a ] ring fused with ].<ref>{{ cite book | author = Gilchrist, T. L. | title = Heterocyclic Chemistry | year = 1987 | publisher = Longman | isbn = 0-582-01422-0 }}</ref> The compound is an ] of ]. Its ] form is ]. The parent isoindole is a rarely encountered in the technical literature, but substituted derivatives are useful commercially and occur naturally. Isoindoles units occur in ]s, an important family of dyes. Some ]s containing isoindole have been isolated and characterized.<ref name= Heugebaert>Heugebaert, Thomas S. A.; Roman, Bart I.; Stevens, Christian V. "Synthesis of isoindoles and related iso-condensed heteroaromatic pyrroles" Chemical Society Reviews 2012, volume 41, pp. 5626-5640. {{doi|10.1039/c2cs35093a}}</ref><ref>See for example: {{Cite journal
'''Isoindole''' in ] is a ] fused ].<ref>Heterocyclic chemistry T.L. Gilchrist ISBN 0-582-01422-0</ref> The compound is an ] of ] and its ] form is an ].
| last1 = Zhang | first1 = X.
| last2 = Ye | first2 = W.
| last3 = Zhao | first3 = S.
| last4 = Che | first4 = C. T.
| title = Isoquinoline and isoindole alkaloids from Menispermum dauricum
| doi = 10.1016/j.phytochem.2003.12.004
| journal = Phytochemistry
| volume = 65
| issue = 7
| pages = 929–932
| year = 2004
| pmid = 15081297
| pmc =
}}</ref>


==Synthesis==
In solution its ] without full aromaticity over the whole ring system is predominant:{{Citation needed|date=February 2008}}
The parent isoindole was prepared by ] of an N-substituted isoindoline.<ref>R. Bonnett and R. F. C. Brown "Isoindole" J. Chem. Soc., Chem. Commun., 1972, 393-395. {{doi|10.1039/C39720000393}}</ref> N-Substituted isoindoles, which are easier to handle, can be prepared by dehydration of isoindoline-N-oxides. They also arise by myriad other methods, e.g., starting from xylylene dibromide (C<sub>6</sub>H<sub>4</sub>(CH<sub>2</sub>Br)<sub>2</sub>).


==Structure and tautomerism of 2-H-isoindoles ==
: ]
Unlike indole, isoindoles exhibit noticeable alternation in the C-C bond lengths, which is consistent with their description as pyrrole derivatives fused to a butadiene.


In solution, the 2''H''-isoindole ] predominates. It resembles a ] more than a simple ].<ref>{{cite book | title = Handbook of Heterocyclic Chemistry |author1=Alan R. Katritzky |author2=Christopher A. Ramsden |author3=J. Joule |author4=Viktor V. Zhdankin | page = 133 | publisher = Elsevier | year = 2010}}</ref> The degree to which the 2''H'' predominates depends on the solvent, and can vary with the substituent in substituted isoindoles.<ref>{{cite book | title = Heterocyclic Chemistry |author1=John A. Joule |author2=Keith Mills | publisher = John Wiley & Sons | year = 2010 | page = 447}}</ref>
and therefore the compound resembles a ] more than a simple ]. Isoindoles are building blocks for ]s which are relevant as dyes


:]{{clear left}}
== Isoindole-1,3-diones ==


N-Substituted isoindoles do not engage is tautomerism and are therefore simpler to study.
The commercially important ] is an '''isoindole-1,3-dione''' with two ] groups attached to the heterocyclic ring. ] is an infamous drug based on this framework.

== Isoindole-1,3-diones and related derivatives==
The commercially important ] is an ''isoindole-1,3-dione'' with two ] groups attached to the heterocyclic ring.
<gallery caption="Illustrative Isoindoline Derivatives" widths="130px" heights="120px" >
File:PY139.svg|], a common high performance pigment.
File:PY185.svg|], a common high performance pigment.
File:Copper phthalocyanine.svg|], one of the most pervasive synthetic pigments.
</gallery>


== See also == == See also ==


* ].
* ] with nitrogen replaced by a ] group. * ] with nitrogen replaced by a ].


== References == == References ==
{{reflist}} {{reflist}}


{{Simple aromatic rings}}
]


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