Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)

A series of novel cobalt bis(dicarbollide) based amidines were synthesized by the nucleophilic addition of primary and secondary amines to highly activated B-N<sup>+</sup>≡C–R triple bond of the propionitrilium derivative [8-EtC≡N-3,3′-Co(1,2-C<sub>2</sub>B<sub>9</su...

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Autores principales: Ekaterina V. Bogdanova, Marina Yu. Stogniy, Kyrill Yu. Suponitsky, Igor B. Sivaev, Vladimir I. Bregadze
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:4446a89e599541dca77225f973a79b5b2021-11-11T18:31:47ZSynthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)10.3390/molecules262165441420-3049https://doaj.org/article/4446a89e599541dca77225f973a79b5b2021-10-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/21/6544https://doaj.org/toc/1420-3049A series of novel cobalt bis(dicarbollide) based amidines were synthesized by the nucleophilic addition of primary and secondary amines to highly activated B-N<sup>+</sup>≡C–R triple bond of the propionitrilium derivative [8-EtC≡N-3,3′-Co(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)]. The reactions with primary amines result in the formation of mixtures of <i>E</i> and <i>Z</i> isomers of amidines, whereas the reactions with secondary amines lead selectively to the <i>E</i>-isomers. The crystal molecular structures of <i>E</i>-[8-EtC(NMe<sub>2</sub>)=HN-3,3′-Co(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)], <i>E</i>-[8-EtC(NEt<sub>2</sub>)=HN-3,3′-Co(1,2- C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)] and <i>E</i>-[8-EtC(NC<sub>5</sub>H<sub>10</sub>)=HN-3,3′-Co(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)] were determined by single crystal X-ray diffraction.Ekaterina V. BogdanovaMarina Yu. StogniyKyrill Yu. SuponitskyIgor B. SivaevVladimir I. BregadzeMDPI AGarticlecobalt bis(dicarbollide)nitrilium derivativesamidinesnucleophilic addition reactionssynthesisstructureOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6544, p 6544 (2021)
institution DOAJ
collection DOAJ
language EN
topic cobalt bis(dicarbollide)
nitrilium derivatives
amidines
nucleophilic addition reactions
synthesis
structure
Organic chemistry
QD241-441
spellingShingle cobalt bis(dicarbollide)
nitrilium derivatives
amidines
nucleophilic addition reactions
synthesis
structure
Organic chemistry
QD241-441
Ekaterina V. Bogdanova
Marina Yu. Stogniy
Kyrill Yu. Suponitsky
Igor B. Sivaev
Vladimir I. Bregadze
Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)
description A series of novel cobalt bis(dicarbollide) based amidines were synthesized by the nucleophilic addition of primary and secondary amines to highly activated B-N<sup>+</sup>≡C–R triple bond of the propionitrilium derivative [8-EtC≡N-3,3′-Co(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)]. The reactions with primary amines result in the formation of mixtures of <i>E</i> and <i>Z</i> isomers of amidines, whereas the reactions with secondary amines lead selectively to the <i>E</i>-isomers. The crystal molecular structures of <i>E</i>-[8-EtC(NMe<sub>2</sub>)=HN-3,3′-Co(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)], <i>E</i>-[8-EtC(NEt<sub>2</sub>)=HN-3,3′-Co(1,2- C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)] and <i>E</i>-[8-EtC(NC<sub>5</sub>H<sub>10</sub>)=HN-3,3′-Co(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>10</sub>)(1′,2′-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)] were determined by single crystal X-ray diffraction.
format article
author Ekaterina V. Bogdanova
Marina Yu. Stogniy
Kyrill Yu. Suponitsky
Igor B. Sivaev
Vladimir I. Bregadze
author_facet Ekaterina V. Bogdanova
Marina Yu. Stogniy
Kyrill Yu. Suponitsky
Igor B. Sivaev
Vladimir I. Bregadze
author_sort Ekaterina V. Bogdanova
title Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)
title_short Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)
title_full Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)
title_fullStr Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)
title_full_unstemmed Synthesis of Boronated Amidines by Addition of Amines to Nitrilium Derivative of Cobalt Bis(Dicarbollide)
title_sort synthesis of boronated amidines by addition of amines to nitrilium derivative of cobalt bis(dicarbollide)
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/4446a89e599541dca77225f973a79b5b
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