Nitrogen??15 NMR evidence for the structures of N??9??H??Xanthen??9??yl??and N, N′??Di??9 H??xanthen??9??yl??ureas

B Coxon, AJ Fatiadi, A Cohen…

Index: Coxon, Bruce; Fatiadi, Alexander J.; Cohen, Alex; Hertz, Harry S.; Schaffer, Robert Organic Magnetic Resonance, 1980 , vol. 13, # 3 p. 187 - 192

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Citation Number: 11

Abstract

Abstract A new monoxanthen‒9‒yl derivative of urea has been synthesized and the structure of this product (N‒9 H‒xanthen‒9‒ylurea) and that of the previously known N, N′‒di‒9 H‒xanthen‒9‒ylurea have been proved by 15 N NMR and other spectroscopic techniques. A series of 13 C and 15 N labeled urea derivatives has been prepared and the utility of their 13 C and 15 N chemical shifts and coupling constants in the structural ...