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2-Oxacyclopentylidene, 2-Oxacyclohexylidene, and 2-Oxacycloheptylidene Rhenium Complexes by Reaction of ω-Alkynols with the [{MeC(CH2PPh2)3}Re(CO)2]+ Auxiliary by Claudio Bianchini; Andrea Marchi; Nicoletta Mantovani; Lorenza Marvelli; Dante Masi; Maurizio Peruzzini; Roberto Rossi is a Chemistry article available to read on EtoBox.

What is 2-Oxacyclopentylidene, 2-Oxacyclohexylidene, and 2-Oxacycloheptylidene Rhenium Complexes by Reaction of ω-Alkynols with the [{MeC(CH2PPh2)3}Re(CO)2]+ Auxiliary about?

Various β-, γ-, and δ-alkynols have been reacted with the cedented seven-membered oxacarbene ring. The rheniumassisted δ-alkynol to 2-oxacyloheptylidene rearrangement 16e Ϫ fragment [(triphos)Re(CO) 2 ] + generated in situ by H 2 elimination from [(triphos)Re(CO) 2 (η 2 -H 2 )]BF 4 [triphos = proceeds via the hydroxybutylvinylidene kinetic intermediate [(triphos)Re(CO) 2 {C=C(H)CH 2 CH 2 CH 2 CH 2 OH}]BF 4 , MeC(CH 2 PPh 2 ) 3 ]. Irrespective of the length of the alkyl chain between the CεC and OH functional groups in the ω-alkywhich has been characterized in both the solid state and solution. An X-ray analysis has been carried out on a single nol, 2-oxacyclocarbene complexes are obtained. These include the 2-oxacyclopentylidene derivatives [(triphos)-crystal of [(triphos)Re(CO) 2 {=CCH 2 CH 2 CH(Me)O}]BF 4 . The structure of this complex consists of [(triphos)Re(CO) 2 {= Re(CO) 2 {=CCH 2 CH 2 CH 2 O}]BF 4 and [(triphos)Re(CO) 2 -{=CCH 2 CH 2 CH(Me)O}]BF 4 , the 2-oxacyclohexylidene dervi-CCH 2 CH 2 CH(Me)O}] + cations and tetrafluoroborate anions with no interspersed solvent molecules. A facial triphos li-vatives [(triphos)Re(CO) 2 {=CCH 2 CH 2 CH 2 CH 2 O}]BF 4 and [(triphos)Re(C

Who reads 2-Oxacyclopentylidene, 2-Oxacyclohexylidene, and 2-Oxacycloheptylidene Rhenium Complexes by Reaction of ω-Alkynols with the [{MeC(CH2PPh2)3}Re(CO)2]+ Auxiliary?

Author

Claudio Bianchini; Andrea Marchi; Nicoletta Mantovani; Lorenza Marvelli; Dante Masi; Maurizio Peruzzini; Roberto Rossi

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1434-1948)

Published

1998

Language

EN

Field

Chemistry (Physical Sciences)