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Synthesis of Unsymmetrical Diboranes by Diborane Metathesis

Synthesis of Unsymmetrical Diboranes by Diborane Metathesis

Anne-Frédérique Pécharman, Michael S Hill, Mary F Mahon

Angew Chem Int Ed Engl. 2018 Aug 13;57(33):10688-10691.

PMID: 29873441

Abstract:

Reactions of readily accessible magnesium-centered pinacolatoboryl nucleophiles with [(Ph2 B)2 O] result in B-O bond activation of the diphenylborinic anhydride. Although [pinBBPh2 ] is apparently generated when the nucleophilic boron unit is derived in situ from a magnesium diboranate, it cannot be isolated owing to its onward derivatization by a further {Bpin}- equivalent. A reaction with a terminal magnesium boryl species similarly provides a boryloxide byproduct. In this case, however, the unsymmetrical B(sp2 )-B(sp3 ) diborane may be intercepted as its DMAP adduct.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP4426215	Diphenylborinic anhydride		4426-21-5	Price

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