Chemoselective Cross-Metathesis Reaction. Application to the Synthesis of the C1−C14 Fragment of Amphidinol 3
作者:Samir BouzBouz、Janine Cossy
DOI:10.1021/ol0157095
日期:2001.5.1
[reaction: see text] An efficient synthesis of the C1-C14 fragment of amphidinol3 is described. The synthesis is based on chemoselective cross-metathesis reactions and enantioselective allyltitanations.
Cobalt(II) chloride catalysed conversion of allylic alcohols to rearranged allylic amides
作者:Naresh K. Nayyar、M. Madhava Reddy、Javed Iqbal
DOI:10.1016/0040-4039(91)80456-g
日期:1991.11
Secondary and tertiary allylic alcohols can be converted to the corresponding allylically rearranged amides and acetates in presence of a catalytic quantity of cobalt(II) chloride and acetic anhydride in acetonitrile. Tertiary alcohols undergo complete rearrangement whereas the secondary ones yield a mixture of regioisomers.
High Atom Efficiency in Sc(OTf)3-Catalyzed Allylation of Aldehydes with Tetraallyltin
作者:Yoshifumi Nagano、Akihiro Orita、Junzo Otera
DOI:10.1002/adsc.200202207
日期:2003.5
The high atom efficiency was achieved through addition of Ac2O in the Sc(OTf)3-catalyzed allylation of aldehyde with tetraallytin in a 4 : 1 molar ratio.
prepared using Schiff's bases derived from aromatic aldehydes and amines or α-aminoesters. These complexes are versatile catalyst for the reaction between aliphatic aldehydes and various alkenes. The outcome of the reaction is controlled by the electronic nature of the alkene as the electron deficient alkenes undergo oxidative addition of aldehydes followed by dioxygen incorporation to yield 2-hydr
Palladium-catalysed substitution reactions of geminal allylic diacetates
作者:Fanie R. van Heerden、Johan J. Huyser、D. Bradley、G. Williams、Cedric W. Holzapfel
DOI:10.1016/s0040-4039(98)01000-4
日期:1998.7
The Pd(0)-catalysed substitution of allylic 1,1-diacetates by both carbon and oxygen nucleophiles is described. The products isolated resulted from either single or double substitution reactions.