Journal
ORGANOMETALLICS
Volume 28, Issue 4, Pages 1221-1226Publisher
AMER CHEMICAL SOC
DOI: 10.1021/om8010245
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First examples of Bronsted acid-induced P,O bond-selective ring expansion reactions of a transition metal coordinated sigma(3)lambda(3)-oxaphosphirane derivative are described. The method provides new and high-yield access to 4,5-dihydro-1,3,4-oxazaphosphole complexes 5a,b-7a,b using oxaphosphirane complex 1 and trifluoromethanesulfonic acid in the presence of different carbonitriles, followed by treatment with triethylamine. A DFT-based reaction course is proposed.
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