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Pteridine studies: III—13C n.m.r. data of pteridine, some of its derivatives and their covalent σ-adducts with ammonia and water

✍ Scribed by J. P. Geerts; A. Nagel; H. C. van der Plas

Publisher: John Wiley and Sons
Year: 1976
Tongue: English
Weight: 388 KB
Volume: 8
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270081204

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✦ Synopsis

Abstract

^13^C n.m.r. spectral data of pteridine and nineteen of its derivatives (containing one or more chloro, methylthio, methyl, t‐butyl or phenyl substituents) are reported. The ^13^C n.m.r. spectrum of the title compound has been assigned conclusively. ^13^C n.m.r. substituent effects are shown to be very useful in discerning between 6‐ and 7‐substituted pteridines. Additionally, the ^13^C n.m.r. spectra of several covalent amination products, i.e. the 3,4‐dihydro‐4‐ amino‐ and the 5,6,7,8‐tetrahydro‐6,7‐diaminopteridine derivatives, formed by dissolving the appropriate pteridine in liquid ammonia, have been recorded. The ^13^C n.m.r. spectra of the corresponding covalent hydrates are also reported.

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✍ J. P. Geerts; H. C. van der Plas; A. van Veldhuizen 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 347 KB

## Abstract Carbon‐13 NMR spectra of the σ‐adduct complexes formed in liquid ammonia between the amide ion and some 2‐R‐pyrimidines, some 4‐chloro‐2‐R‐pyrimidines (R = dimethylamino‐, __N__‐methylanilino, piperidino‐, morpholino‐, phenyl‐), 5‐bromo‐2‐piperidinopyrimidine and pyrimidine itself are d