作者:Zhibin Zhang、Seong Du Lee、Aaron S. Fisher、Ross A. Widenhoefer
DOI:10.1016/j.tet.2008.10.113
日期:2009.2
A gold(I) N-heterocyclic carbene complex catalyzes the intermolecular hydration of allenes to form allylic alcohols in modest yield with selective delivery of water to the terminal carbon atoms of the allenyl moiety.
金 (I) N -杂环卡宾配合物催化丙二烯的分子间水合,以适度的产率形成烯丙醇,并选择性地将水输送到丙二烯基部分的末端碳原子。
Amine induced carbonylation of alkynes to cyclobutenediones using Fe3(CO)12
作者:Chellappan Rameshkumar、Mariappan Periasamy
DOI:10.1016/s0040-4039(00)00247-1
日期:2000.4
Iron carbonyl species, prepared in situ in THF using Fe3(CO)12, react with alkynes at 25°C, in the presence of certain amines, to give the corresponding cyclobutenediones in moderate to good yields (25–61%) after CuCl2·2H2O oxidation.
Terminal alumination of alkynes by DIBALH or trimethylaluminum can be performed in a simple manner in the presence of a small amount of triethylamine. This new Lewis-base-catalyzed process delivers mixed alkynyldialkylalanes of great interest, without the need of an initial deprotonation step with lithium or sodium derivatives followed by a transmetalation.