Gold(I)-Catalyzed Rearrangement of Propargylic Alcohols to α,β-Unsaturated Ketones
作者:Young Chung、Sang Lee、Ji Baek、So Sim
DOI:10.1055/s-2007-983725
日期:——
We have developed a gold(I)-catalyzed rearrangement of propargylic alcohols to α,β-unsaturated ketones. The reaction might proceed through a dehydration of an alkynol, followed by an addition of water to a cumulene intermediate. The substituents of the alkynol play an important role in the rearrangement.
The efficient addition of terminal alkynes to aldehydes or ketones to give propargyl alcohols in yields of 66-96 % can be achieved by activation with catalytic amounts of CsOH⋅H2 O [Eq. (a)]. A CsOH-catalyzed addition of acetonitrile derivatives to terminal alkynes is also possible.
Dehmlow, Eckehard V.; Shamout, Abdul Rahman, Liebigs Annalen der Chemie, 1982, # 9, p. 1750 - 1752
作者:Dehmlow, Eckehard V.、Shamout, Abdul Rahman
DOI:——
日期:——
DEHMLOW, E. V.;SHAMOUT, A. R., LIEBIGS ANN. CHEM., 1982, N 9, 1750-1752
作者:DEHMLOW, E. V.、SHAMOUT, A. R.
DOI:——
日期:——
Newin situ Generated Ruthenium Catalyst for Enyne Metathesis: Access to Novel Cyclic Siloxanes
作者:David Sémeril、Myriam Cléran、Christian Bruneau、Pierre H. Dixneuf