𝔖 Bobbio Scriptorium
✦   LIBER   ✦

17O NMR study of isomeric monochloro- and monohydroxy-benzaldehydes and chlorinated salicylaldehydes

✍ Scribed by E. Kolehmainen; J. Knuu-Tinen

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
178 KB
Volume
29
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

The 1 7 0 N M R chemical shifts of isomeric monochloro-and monohydroxybenzaldehydes and chlorinated salicylaldehydes were measured at 40°C for 0.25 M CDCI, solutions. The "0 N M R chemical shift of the carbonyl oxygen of the compounds studied varies from 506 to 573 ppm measured from external D,O. The observed variation is probably mainly due to the intramolecular hydrogen bonding between the adjacent carbonyl and hydroxyl groups. The 170 N M R chemical shift range of the hydroxyl oxygen is from 80 to 98 ppm.

📜 SIMILAR VOLUMES

17O NMR study of chlorinated anisoles
17O NMR study of chlorinated anisoles
✍ E. Kolehmainen; J. Knuutinen 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 English ⚖ 201 KB

## Acknowledgements The author thanks UMYMFOR (CONICET-FCEyN-UBA) and lic. Dario Doller for generous technical support, and the Universidad de Buenos Aires for financial support. l-Ethyl-9-(l'-ethyl-9'H-py~idof3,4-b]indol-3'-yl)pyrido(3,4-b)indole (22). Colourless plates from benzene-EtOH, m.p.

17O NMR spectroscopy: Study of intramole
17O NMR spectroscopy: Study of intramolecular hydrogen bonding in phenols and salicylaldehydes
✍ David W. Boykin; S. Chandrasekaran; A. L. Baumstark 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 480 KB

## Abstract Natural abundance ^17^O NMR data for fifteen 2‐ and 4‐substituted phenols, ten 3‐and 5‐substituted 2‐hydroxybenzaldehydes and eight 3‐substituted benzaldehydes, recorded at 75°C in acetonitrile are reported. The chemical shift change due to intramolecular hydrogen bonding for the phenol

NMR studies on benzaldehydes. III—Rotati
NMR studies on benzaldehydes. III—Rotational isomerism and torsional barriers in stable protonated o- and m-substituted benzaldehydes
✍ R. Jost; J. M. Sommer; T. Drakenberg 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 351 KB

## Abstract Proton and carbon‐13 NMR spectroscopy have been used to obtain the torsional barrier in some protonated __ortho__ and __meta__ substituted benzaldehydes, and the relative populations of the O‐__cis__ and O‐__trans__ rotamers have been determined. The results are compared with earlier da

13C and 17O NMR study of methoxy groups
13C and 17O NMR study of methoxy groups in chlorinated Di- and trimethoxybenzenes
✍ J. Knuutinen; E. Kolehmainen 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 275 KB

## Abstract ^13^C and ^17^O NMR data [chemical shifts and ^1^__J__(CH) values] for the methoxy groups in isomeric 1,2‐, 1,3‐ and 1,4‐dimethoxybenzenes, 1,2,3‐trimethoxybenzenes and most of their chlorinated derivatives and some related brominated compounds were measured for CDCl^3^ solutions. The ^

1H, 13C and 17O NMR study of aromatic ri
1H, 13C and 17O NMR study of aromatic ring-substituted monochloro- and monobromo-(E)-3-phenylpropenals
✍ Erkki Kolehmainen; Katri Laihia; Pia Mänttäri 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 461 KB

## Abstract __Trans__‐Cinnamaldehydes (CAs) or __o__‐, __m__‐ and __p__‐X‐(__E__)‐3‐phenylpropenals; (X = Cl or Br) were synthesized and their ^1^H, ^13^C and ^17^O NMR spectra were measured, assigned and analysed. The long‐range benzylic couplings are discussed in terms of the conformational chara