Accoun ts Letters - Thieme Chemistry

Letters
IV Table of Contents
1211
Kinetic and Thermodynamic Control in the
Synthesis of Tetrahydro-Pyrans and -Furans from
1,4-Diols by Stereospecific Phenylsulfanyl (PhS)
Migration: Competition Between exo and endo
Transition States and between [1,2] and [1,4]
Sulfanyl Participation
J. Eames, N. Kuhnert, F. H. Sansbury, S. Warren
1215
[1,4]-SPh Shift Cyclisations or [1,2]-SPh-Cyclisations
as Alternative Cascade Sequences for Stereocontrolled
Synthesis of Substituted Tetrahydrofurans
J. Eames, N. Kuhnert, S. Warren
1219
Synthesis of a Polyhydroxyquinolizidine bearing a
Polyhydroxylated Carbon Side-Chain
C. Schaller, P. Vogel
1223
Palladium-Catalyzed Synthesis of N-Aryl- and N-
Heteroaryl-aza-crown Ethers via Cross-Coupling
Reactions of Aryl- and Heteroaryl Bromides with
Aza-crown Ethers
B. Witulski
1227
First Synthesis of Xerulin, an Inhibitor of the
Biosynthesis of Cholesterol
K. Siegel, R. Brückner
1231
Oxidative Asymmetrization of Racemic Alkenes:
Asymmetric Synthesis of Optically Active Dicyclopentadiene
Derivatives
Y. Kohmura, T. Katsuki
O
Ph3P
+
(4 eq)
O
O
H
H
1) PhCO3Bu-t (1 eq)
Cu(OTf)2-L* (0.05 eq)
2) NaOHaq O
O
H
H
HO
(racemic)
L* = chiral tris(oxazoline) ligand
80% ee, 27%
O
O
O
O