Two-alkyne annulations of transition-metal carbene complexes via in situ generated vinyl carbene complexes

WD Wulff, RW Kaesler, GA Peterson…

Index: Wulff, William D.; Kaesler, Ralph W.; Peterson, Glen A.; Tang, Peng-Cho Journal of the American Chemical Society, 1985 , vol. 107, # 4 p. 1060 - 1062

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Citation Number: 70

Abstract

Among the many transition-metal-mediated six-membered ring syntheses, 2 the benzannulation of vinyl carbene complexes of chromium with alkynes is quite novel and still relatively unexpl~ red.~.~ This annulation involves the overall incorporation of an acetylene, a carbon monoxide ligand, the carbene carbon, and its vinyl substituent as indicated schematically by A. Depending

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