A New Cyclization Reactions Cascade: Ene Type, [2 + 2 + 2], [4 + 2]. Stereoselective Formation of Six Carbon-Carbon Bonds and Four Rings in a One-Pot Sequence
作者:Paul Cruciani、Corinne Aubert、Max Malacria
DOI:10.1021/jo00114a010
日期:1995.5
Cruciani Paul, Aubert Corinne, Malacria Max, J. Org. Chem, 60 (1995) N 9, S 2664-2665
作者:Cruciani Paul, Aubert Corinne, Malacria Max
DOI:——
日期:——
New Cobalt-Catalyzed Cycloisomerization of ε-Acetylenic β-Keto Esters. Application to a Powerful Cyclization Reactions Cascade
type reaction of epsilon-acetylenic beta-keto esters to form highly functionalized methylenecyclopentanes are described. The observed regio-, chemo-, and stereoselectivities support a process of cycloisomerization which controls the relative stereochemistry of two contiguous stereogenic centers. An efficient route to the basic skeleton of the phyllocladane family has been achieved via a one-pot sequence