✦ LIBER ✦

13C NMR Spectral Characterization of 4-Aryl-Substituted Bispyrazolo[3,4–b;4′,3′–e]pyridines

✍ Scribed by E. Kolehmainen; K. Laihia; D. Rasała; A. Puchała

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 210 KB
Volume: 34
Category: Article
ISSN: 0749-1581
DOI: 10.1002/(sici)1097-458x(199607)34:7<570::aid-omr921>3.0.co;2-a

No coin nor oath required. For personal study only.

✦ Synopsis

I5N NMR spectra

The "N NMR spectra were recorded on a Bruker AM-500 spectrometer (50.684 MHz) equipped with an ASPECT-3000 computer system and INVGATE program at 27 "C in DMSO-8, solution and the chemical shifts were referenced to CH3'5N0, (380 ppm) as the standard.

The spectra of la, 2a, 3a, 3b, 4a, 5a, 6a and 6c were measured in 5-20 M solutions with 250-1000 scans and those of lb, 2b, 2e, 4b, 5b, 9, 6b and 7a in 4-1 M solutions with 8100-10700 scans using a Model 5d, probe.

The spectra of ld, 2d,3d, 4d, 5d, 6d, 7b and 7d

were measured in 0.5-0.1 M solutions with 3300-30000 scans using a Model 104 probe. The spectral width was 25 kHz sampled over 64K data points and the digital resolution was 0.763 Hz per point.

References

📜 SIMILAR VOLUMES

13C NMR spectral characterization of N-a

13C NMR spectral characterization of N-aryl-substituted 4H-1,4-benzothiazine 1,1-dioxide derivatives

✍ Simón E. López; M. Valentina Godoy; Jaime Charris; Neudo Urdaneta; José Salazar; 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 40 KB 👁 1 views

1H and 13C NMR spectroscopy of 6-aryl-su

1H and 13C NMR spectroscopy of 6-aryl-substituted 3-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-s-triazolo[3,4-b]-1,3,4-thiadiazoles

✍ Heng-Shan Dong; Bin Quan; Kun Wei; Qing-Lian Wang; Zi-Yi Zhang 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 93 KB 👁 1 views

Novel 6-aryl-3-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-s-triazolo[3,4-b]-1,3,4-thiadiazoles were synthesized by the condensation of 3-[5-methyl-1-(4-methylphenyl)-1,2,3-triazol-4-yl]-4amino-5-mercapto-s-triazole with various aromatic carboxylic acids in the presence of phosphorus oxychlorid

1H and 13C NMR spectra of 3-substituted

1H and 13C NMR spectra of 3-substituted 4-quinolones

✍ Ľubomír Zalibera; Viktor Milata; Dušan Ilavský 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 180 KB 👁 2 views

A series of 14 3-substituted 4-oxoquinolones with or without a substituent (methyl, ethyl) in position 1 were prepared. Literature and measured data were used to study the inÑuence of the substituent on the shifts of carbon atoms of these compounds, which are model compounds for antibacterial drugs

1H and 13C NMR spectral characterization

1H and 13C NMR spectral characterization of some antimalarial in vitro 3-amino-9-methyl-1H-pyrazolo[3,4-b]-4-quinolones

✍ Jaime E. Charris; José N. Domínguez; Gricela Lobo; Mary I. Cordero; Simón E. Lóp 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 46 KB 👁 1 views

1H and 13C NMR Spectroscopy of Substitut

1H and 13C NMR Spectroscopy of Substituted Tris-1,3,4-oxadiazoles

✍ HASAN TASHTOUSH; RUFAIDA SUBAIHI AND MAHMOUD AL-TALIB 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 197 KB 👁 1 views

Jordan 1,3,5-Tris(5-substituted-1,3,4-oxadiazol-2-yl)benzenes were prepared by the dehydration of the corresponding hydrazides. The structures of these compounds were elucidated by IR, 1H and 13C NMR spectroscopy.

Cyclothioacetals and Cycloacetals of And

Cyclothioacetals and Cycloacetals of Androst-4-ene-3,17-dione and Related Compounds. 13C NMR Spectral Assignments

✍ G. M. Caballero; E. G. Gros 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 203 KB

The 13C NMR spectra 1 7 derivatives of androst-4-ene-3,17-dione were recorded and assigned. Assignments were based on spectral comparison with compounds of similar structure and distortionless enhancement by polarization transfer (DEPT) NMR measurements.