Ru-Catalyzed Cyclization of Terminal Alkynals to Cycloalkenes
作者:Jesús A. Varela、Carlos González-Rodríguez、Silvia G. Rubín、Luis Castedo、Carlos Saá
DOI:10.1021/ja0610434
日期:2006.8.1
Cycloalkenes can be efficiently prepared by a new Ru-catalyzed cyclization of terminal alkynals. Under appropriate conditions, cycloisomerizations to conjugated aldehydes may be observed. Both processes involve catalytic Ru vinylidenes.
Chemistry of organosilicon compounds. 148. 3-Chloro-2-(trimethylsiloxy)-1-propene as an electrophilic acetonyl equivalent. Novel regioselective synthesis of 1,4-dicarbonyl compounds
LERMAN, O.;TOR, Y.;ROZEN, S., J. ORG. CHEM., 1981, 46, N 22, 4631-4633
作者:LERMAN, O.、TOR, Y.、ROZEN, S.
DOI:——
日期:——
Tin-free radical chemistry: intramolecular addition of alkyl radicals to aldehydes and ketones
作者:Priscille Devin、Louis Fensterbank、Max Malacria
DOI:10.1016/s0040-4039(99)01072-2
日期:1999.7
The radical cyclization of several ω-iodoaldehydes and a ketone can be accomplished without the use of tributyltin hydride. Triethylborane in presence of oxygen or light from a sun lamp can serve as a radical initiator and terminator. In these conditions, a 5-exo-trig cyclization on an aldehyde is faster than on an alkene.