Iridium-catalyzed hydroboration of alkenes with pinacolborane


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Title:	Iridium-catalyzed hydroboration of alkenes with pinacolborane
Authors:	Yamamoto, Yasunori Browse this author →KAKEN DB
	Fujikawa, Rhyou Browse this author
	Umemoto, Tomokazu Browse this author
	Miyaura, Norio Browse this author
Keywords:	Hydroboration
	Pinacolborane
	Iridium
	Rhodium
Issue Date:	15-Nov-2004
Publisher:	Elsevier Ltd
Journal Title:	Tetrahedron
Volume:	60
Issue:	47
Start Page:	10695
End Page:	10700
Publisher DOI:	10.1016/j.tet.2004.09.014
Abstract:	Hydroboration of terminal and internal alkenes with pinacolborane (1.2 equiv) was carried out at room temperature in the presence of an iridium(I) catalyst (3 mol%). Addition of dppm (2 equiv) to [Ir(cod)Cl]2 gave the best catalyst for hydroboration of aliphatic terminal and internal alkenes at room temperature, resulting in addition of the boron atom to the terminal carbon of 1-alkenes with more than 99% selectivities. On the other hand, a complex prepared from dppe (2 equiv) and [Ir(cod)Cl]2 resulted in the best yields for vinylarenes such as styrene. These complexes exhibited higher levels of catalyst activity and selectivity than those of corresponding rhodium complexes.
Relation:	http://www.sciencedirect.com/science/journal/00404020
Type:	article (author version)
URI:	http://hdl.handle.net/2115/15836
Appears in Collections:	工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 宮浦憲夫

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