𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Enantiomerenreine Kohlenhydratmimetika durch Lewis-Säure-induzierte Umlagerung von 1,3-dioxolanylsubstituierten 1,2-Oxazinen

✍ Scribed by Ahmed Al-Harrasi; Hans-Ulrich Reißig


Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
135 KB
Volume
117
Category
Article
ISSN
0044-8249

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Unerwartete Bildung von γ-Lactamen aus 6
✍ Zimmer, Reinhold ;Reißig, Hans-Ulrich ;Lindner, Hans Jörg 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 334 KB

Unexpected Formation of γ‐Lactams from 6__H__‐1,2‐Oxazines Promoted by Lewis Acids The reaction of 6__H__‐1,2‐oxazine 1 with trimethylsilyl cyanide in the presence of titanium tetrachloride provides α,β‐unsaturated γ‐lactam 3. Similarly, Lewis acid‐promoted addition of trimethyl phosphite towards 1

Herstellung enantiomerenreiner Derivate
✍ Axel Griesbeck; Dieter Seebach 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 German ⚖ 417 KB 👁 1 views

From (S)-4-methyloxetan-2-one (l), the b-butyrolactone readily available from the biopolymer (R)-polyhydroxybutyrate (PHB) and various C,N,O and S nucleophiles, the following compounds are prepared: (S)-2-hydroxy-4-octdnone (3), (R)-3-aminobutanoic acid (7) and its N-benzyl derivative 5, (R)-3-azido

Durch Umlagerung induzierte Fragmentieru
✍ C. A. Grob; R. M. Hoegerle; M. Ohta 📂 Article 📅 1962 🏛 John Wiley and Sons 🌐 German ⚖ 708 KB

## Abstract A fragmentation reaction can be induced by generating a γ‐amino‐carbonium ion through a Wagner‐Meerwein rearrangement of a δ‐amino‐__p__‐toluenesulfonic ester. Thus solvolysis of 4‐tosyloxymethyl‐quinuclidine (9a) in aqueous ethanol yields the 4‐methylene‐1‐aza‐cycloheptanes (20a) and (