作者:Marie E. Krafft、Carmelinda A. Juliano、Ian L. Scott、Colin Wright、Michael D. McEachin
DOI:10.1021/ja00005a038
日期:1991.2
The regioselectivity of the cobalt-mediated cocyclization of an alkene, an alkyne, and carbon monoxide has been shown to be directed by the use of a soft atom, either sulfur or nitrogen, tethered to the alkene partner by a carbon chain. Direction from the homoallylic position is more efficient thant from the allylic or bishomoallylic position. A rationale is proposed to explain this observation. Studies
Regiocontrol in the intermolecular cobalt-catalyzed olefin-acetylene cycloaddition
作者:Marie E. Krafft
DOI:10.1021/ja00211a048
日期:1988.2.3
Reactions de complexes de Co 2 (CO) 6 a coordinat acetylenique avec des sulfures ou amines homoallyliques: obtention de methylthio-2'- et dimethylamino-2' ethyl-5 cyclopentene-2ones
反应 de Co 2 (CO) 6 a coordinat acetylenique avec dessulfes ou amines homoallyliques: obtention demethylthio-2'- et dimethylamino-2'ethyl-5 cyclopentene-2ones