𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Optically active triarylboranes: synthesis and stereoisomerization of ethano-bridged triarylboranes

✍ Scribed by Keiji Okada; Haruki Inokawa; Masaji Oda


Publisher
Elsevier Science
Year
1991
Tongue
French
Weight
234 KB
Volume
32
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Synthesis and Reactions of Optically Act
✍ Werner Tochtermann; Anne-Katrin Mattauch; Eva-Maria Peters; Karl Peters; Hans Ge πŸ“‚ Article πŸ“… 1998 πŸ› John Wiley and Sons 🌐 English βš– 533 KB

Treatment of the bridged methyl furanosides 1, 3 and 5 with dilute acid furnishes the corresponding deoxyfuranose derivatives 2, 4 and 6. The trans-substitution pattern of the tetrahydrofuran ring was established by X-ray structural analysis of 2 and by comparison of the 1 H-NMR spectra. A new reso-

Synthesis of Medium and Large Rings, XLI
✍ Tochtermann, Werner ;Panitzsch, Torsten ;Peschanel, Matthias ;Wolff, Christian ; πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 533 KB

## Abstract Irradiation of the dihydrooxepine monoester (+)‐4 gives the bridged bicyclobutane (+)‐5 in 77% yield. On the other hand, the corresponding diester 1 yields the cyclobutene 2. Possible explanations for this differing behaviour are discussed.

Synthesis of Medium and Large Ring Compo
✍ Tochtermann, Werner ;Mattauch, Anne-Katrin ;Kasch, Michael ;Peters, Eva-Maria ;P πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons 🌐 English βš– 678 KB

## Abstract The resolution of the earlier reported racemic bridged methyl deoxyfuranosides 1 and 3 was achieved via fractional crystallization of the ephedrinium salts 2 or by column chromatography of the camphanoates 5. The absolute configurations of 1 and 3 were established by X‐ray structural an