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Enache C.,Central Laboratory for Phytosanitary | Flip P.,Romanian Academy of Sciences | Razus A.C.,Romanian Academy of Sciences
Revista de Chimie | Year: 2010

The molecular mass distribution of polyethyleneglycols was thoroughly determined after derivatization with phenylisocyanide. The resulted carbamic diesters were analyzed by HPLC coupled with mass spectrometry and ultraviolet detection. The mass spectrometry was used for structure confirmation and the ultraviolet spectra for establishing the molecular mass distribution of the carbamic diesters. Source


Tanase C.,Romanian National Institute for Chemical Pharmaceutical Research and Development | Caproiu M.T.,Romanian Academy of Sciences | Draghici C.,Romanian Academy of Sciences | Cocu F.G.,Romanian National Institute for Chemical Pharmaceutical Research and Development | And 2 more authors.
Revista de Chimie | Year: 2011

By Mitsunobu reaction of N3-benzoyl 5-fluorouracil with 2-chloro-5-hydroxy-bicyclo[2.2.IJhept-7-ylmethyl benzoate no nucleoside was obtained. Instead nucleoside we observed a benzoate group migration with the formation of bis-benzoylated compound (5). The structure of this compound was proved by MS, IR, 1Hand 13C-NMR (with complementary COSY and HETCOR spectra), and also by synthesis of the compound by benzoylation of the starting intermediate (1). Source

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