Chavagnan T, Sémeril D, Matt D, Harrowfield J, Toupet L. Cracking cavitands: metal-directed scission of phosphinyl-substituted resorcinarenes.
Chemistry 2015;
21:6678-81. [PMID:
25801729 DOI:
10.1002/chem.201500177]
[Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Indexed: 11/06/2022]
Abstract
Resorcinarene-derived tetramethylene cavitands bearing a diphenylphosphino group grafted to their wider rim undergo facile, directed C-O bond breaking upon reaction with transition-metal ions in the presence of nucleophiles. One possible reaction mechanism involves formation of a P,O-chelate complex, which weakens the adjacent O-CH2 bond, leading to the formation of an oxacarbenium intermediate.
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