𝔖 Bobbio Scriptorium
✦   LIBER   ✦

13C and 15N NMR study of derivatives of N-unsubstituted pyrrolidines

✍ Scribed by Didier Barbry; Bruno Hasiak; Daniel Couturier


Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
192 KB
Volume
28
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

^13^C and ^15^N NMR data for twelve N‐unsubstituted pyrrolidines are reported and cis and trans stereomers are assigned for 2,3‐, 2,4‐ and 2,5‐disubstituted compounds.


📜 SIMILAR VOLUMES


13C NMR chemical shifts of N-unsubstitut
✍ Pilar Cabildo; Rosa Maria Claramunt; Jose Elguero 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 331 KB

## Reference Data 13C NMR Chemical Shifts of N u nsubstituted-and N-MethyI-Pyramle Derivatives 13C shielding data for 100 derivatives of pyrazole are reported. These include methyl, ethyl, n-propyl, tert-butyl, phenyl, hydroxymethyl, carboxyl, ethoxycarbonyl, cyano. amino, hydrazino, nitro, azido,

13C and 15N NMR Study of Electron Distri
✍ Ian D. Cunningham; Nan Chi Wan 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 512 KB

13C and "N NMR spectroscopic assignments are given for a series of N-aryl-N-cyanoguanidines in DMSO-d, along with those for a few related cyanoguanidines. The NMR data are interpreted in terms of minimal overlap of the amino lone pair with the attached aryl ring, and a planar guanidine structure wit

1H, 13C and 15N NMR study of N1-alkyl-N2
✍ Iwona Wawer; Vera Koleva 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 407 KB

## Abstract ^13^C and ^15^N NMR chemical shifts were measured for __N__^1^‐alkyl‐__N__^2^‐arylthioureas. The absence of decoalescence of the __N__^1^‐alkyl group carbon signals down to 190 K, the europium‐induced chemical shifts and the molecular mechanics calculations indicate that the preferred c

1H, 13C and 15N NMR assignments of phena
✍ Eleuterio Burgueño-Tapia; Yolanda Mora-Pérez; Martha S. Morales-Ríos; Pedro Jose 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 120 KB

## Abstract Phenazopyridine hydrochloride (**1**), a drug in clinical use for many decades, and some derivatives were studied by one‐ and two‐dimensional ^1^H, ^13^C and ^15^N NMR methodology. The assignments, combined with DFT calculations, reveal that the preferred protonation site of the drug is

1H, 13C and 15N NMR spectra of [1,2-15N2
✍ Alain Fruchier; Valdo Pellegrin; Rosa Maria Claramunt; Jose Elguero 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 199 KB

## REFERENCE DATA carbons, for various substituent groups and positions were carried out by gated decoupling with NOE. ## RESULTS AND DISCUSSION The I3C NMR chemical shifts of the compounds are shown in Tables 123; 'J(CH) and long-range coupling constants of 2, 9, 13 and 18, measured by gated d

NMR study of C- and N-trimethylsilylazol
✍ Lyudmila I. Larina; Mikhail S. Sorokin; Aleksandr I. Albanov; Valentina N. Elokh 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 223 KB 👁 2 views

C-and N-trimethylsilylazole derivatives were studied by 1H, 13C and 29Si NMR spectroscopy. Degenerated prototropic tautomerism of 4-trimethylsilylpyrazole in methanol and the silylotropy of 1trimethylsilyl-4-methylpyrazole in a neat liquid were investigated for the Ðrst time. 3-and 5-tautomers of 3(