𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Conformational analysis of 7,7-dichloro-2,5-dioxabicyclo[4.1.0] heptane by NMR

✍ Scribed by J. Herman Schauble; Nelson R. Lazear

Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
207 KB
Volume
6
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The ^1^H NMR spectra of 7,7‐dichloro‐2,5‐dioxabicyclo‐[4.1.0]heptane (1) were analyzed through the application of programs NMRIT and NMREN2.See Ref. 1.

The half‐chair conformation of 1 was obtained from the vicinal coupling constants by the Buys R method.See Ref. 2.

πŸ“œ SIMILAR VOLUMES

The crystal structure and conformational
The crystal structure and conformational analysis of substituted 2,7-dioxabicyclo[4,1,0[heptanes: 1,2-anhydro-3,4,6-tri-O-benzyl-Ξ²-d-talopyranose
✍ Genpei Li; Lihong Jiang; Fanzuo Kong; Jianhui Liu πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 437 KB

The title compound, C28H27O5, is triclinic, space group P1 with unit cell dimensions a = 12.763(2), b = 11.130(2), c = 4.764(3) A, alpha = 73.78(3), beta = 82.89(3), gamma = 62.16(1) degrees, V = 574.8(4) A3, and Z = 1. The pyranose ring has an 4H5 conformation with some flattening at C-4. Molecular

Synthesis, conformation, and glycosidic
Synthesis, conformation, and glycosidic coupling reactions of highly active substituted 2,7-dioxabicyclo[4.1.0]heptanes: 1,2-anhydro-3,4-di-O-benzyl-Ξ±-d-xylopyranose
✍ Guangbin Yang; Fanzuo Kong; Robert R. Fraser πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 734 KB

The title 1,Zanhydro sugar (8) was synthesized from D-xylose. The key intermediate for the synthesis was 2-0-acetyl-3,4-di-0-benzyl-@-o-xylopyranosyl fluoride, which was transformed into crystalline 8 by ring closure with potassium tert-butoxide. Comparison of the observed vicinal coupling constants

Complete analysis of the 1H NMR spectra
Complete analysis of the 1H NMR spectra of bicyclo[3.2.0]hept-2-en-6-one and the 7,7-dimethyl, 7,7-dichloro and 7-endo-chloro derivatives
✍ Raymond J. Abraham; Geoffrey R. Bedford; Marcus Canton; Paul Leonard πŸ“‚ Article πŸ“… 2001 πŸ› John Wiley and Sons 🌐 English βš– 91 KB

## Abstract The proton spectra of bicyclo[3.2.0]hept‐2‐en‐6‐one and the 7,7‐dimethyl, 7,7‐dichloro and 7‐__endo__‐chloro derivatives were analysed and the chemical shifts and coupling constants are reported. Molecular modelling and chemical shift calculations together with the observed couplings sh