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
Carbopalladation-depalladation of homoallylic amines and sulfides
作者:Robert A. Holton、Richard A. Kjonaas
DOI:10.1016/s0022-328x(00)91829-1
日期:1977.12
stabilized enolates have been found to add to C-4 of homoallylic amines and sulfides in the presence of lithium tetrachloropalladate to give stable chelated palladium complexes in high yield. These complexes may either be isolated or reduced directly with sodium borohydride, providing a simple new route to ω-functionalized amines and sulfides.