Lewis acid/CpRu dual catalysis in the enantioselective decarboxylative allylation of ketone enolates
作者:David Linder、Martina Austeri、Jérôme Lacour
DOI:10.1039/b910475e
日期:——
The addition of a Lewisacidic metal triflate salt Mg(OTf)2 as co-catalyst in the CpRu-catalyzed decarboxylative allylation of in situ-generated ketone enolates allows the reaction to proceed at lower temperature with higher regio- and enantioselectivity. Even so-far-unreactive substrates react.
Extension of ring closing metathesis methodology to the synthesis of carbocyclic methyl and silyl enol ethersElectronic supplementary information (ESI) available: full experimental details. See http://www.rsc.org/suppdata/cc/b2/b208445g/
作者:Varinder K. Aggarwal、Adrian M. Daly
DOI:10.1039/b208445g
日期:2002.10.18
Carbocyclic methyl and silyl enol ethers (TBDMS is optimum) can be synthesised regiospecifically by ring closing metathesis using the ‘second generation’ Grubbs ruthenium carbene catalyst in combination with molecular sieves.