Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids

We observed an unusual formation of four-coordinate boron(III) complexes from the reaction of 1-(2-pyridinyl)-5-pyrazolone derivatives with arylboronic acids in the basic media. The exact mechanism is not clear; however, the use of unprotected boronic acid and the presence of a bidentate ligand appe...

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Autores principales:	Joungmo Cho, Venkata Subbaiah Sadu, Yohan Han, Yunsoo Bae, Hwajeong Lee, Kee-In Lee
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	1-(2-pyridinyl)-5-pyrazolone [<i>N</i>,<i>O</i>]-bidentate ligand arylboronic acid base diarylborination four-coordinate boron(III) complex Organic chemistry QD241-441
Acceso en línea:	https://doaj.org/article/8f6760d80b164164b91d00995d796abe
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spelling	oai:doaj.org-article:8f6760d80b164164b91d00995d796abe2021-11-25T18:27:26ZStructural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids10.3390/molecules262268141420-3049https://doaj.org/article/8f6760d80b164164b91d00995d796abe2021-11-01T00:00:00Zhttps://www.mdpi.com/1420-3049/26/22/6814https://doaj.org/toc/1420-3049We observed an unusual formation of four-coordinate boron(III) complexes from the reaction of 1-(2-pyridinyl)-5-pyrazolone derivatives with arylboronic acids in the basic media. The exact mechanism is not clear; however, the use of unprotected boronic acid and the presence of a bidentate ligand appeared to be the key structural requirements for the transformation. The results suggest that base-promoted disproportionation of arylboronic acid with the assistance of the [<i>N</i>,<i>O</i>]-bidentate ligation of 1-(2-pyridinyl)-5-pyrazolone should take place and facilitate the formation of pyrazole diarylborinate. Experiments to obtain a deeper understanding of its mechanism are currently underway.Joungmo ChoVenkata Subbaiah SaduYohan HanYunsoo BaeHwajeong LeeKee-In LeeMDPI AGarticle1-(2-pyridinyl)-5-pyrazolone[<i>N</i>,<i>O</i>]-bidentate ligandarylboronic acidbasediarylborinationfour-coordinate boron(III) complexOrganic chemistryQD241-441ENMolecules, Vol 26, Iss 6814, p 6814 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	1-(2-pyridinyl)-5-pyrazolone [<i>N</i>,<i>O</i>]-bidentate ligand arylboronic acid base diarylborination four-coordinate boron(III) complex Organic chemistry QD241-441
spellingShingle	1-(2-pyridinyl)-5-pyrazolone [<i>N</i>,<i>O</i>]-bidentate ligand arylboronic acid base diarylborination four-coordinate boron(III) complex Organic chemistry QD241-441 Joungmo Cho Venkata Subbaiah Sadu Yohan Han Yunsoo Bae Hwajeong Lee Kee-In Lee Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids
description	We observed an unusual formation of four-coordinate boron(III) complexes from the reaction of 1-(2-pyridinyl)-5-pyrazolone derivatives with arylboronic acids in the basic media. The exact mechanism is not clear; however, the use of unprotected boronic acid and the presence of a bidentate ligand appeared to be the key structural requirements for the transformation. The results suggest that base-promoted disproportionation of arylboronic acid with the assistance of the [<i>N</i>,<i>O</i>]-bidentate ligation of 1-(2-pyridinyl)-5-pyrazolone should take place and facilitate the formation of pyrazole diarylborinate. Experiments to obtain a deeper understanding of its mechanism are currently underway.
format	article
author	Joungmo Cho Venkata Subbaiah Sadu Yohan Han Yunsoo Bae Hwajeong Lee Kee-In Lee
author_facet	Joungmo Cho Venkata Subbaiah Sadu Yohan Han Yunsoo Bae Hwajeong Lee Kee-In Lee
author_sort	Joungmo Cho
title	Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids
title_short	Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids
title_full	Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids
title_fullStr	Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids
title_full_unstemmed	Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids
title_sort	structural requirements of 1-(2-pyridinyl)-5-pyrazolones for disproportionation of boronic acids
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/8f6760d80b164164b91d00995d796abe
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Structural Requirements of 1-(2-Pyridinyl)-5-pyrazolones for Disproportionation of Boronic Acids

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