## Abstract C^14^‐labelled O,N‐dimethylhydroxyurethane is synthesized from C^14^‐labelled dimethylsulfate and N‐hydroxy‐urethane. It is further converted without purification into O,N‐^14^‐C‐dimethyl‐hydroxylammoniumchloride, which was then nitrosated with sodiumnitrite in acidic medium to give N‐N
Preparation and investigation of [14C]padimate-O and [14C]N-nitroso-N-nor-padimate-O
✍ Scribed by Anita H. Lewin; Louise Fudala
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- French
- Weight
- 353 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Carbonation of the aryl lithium obtained from p‐N,N(dimethylamino)bromobenzene with carbon‐14 labeled carbon dioxide, followed by esterification gave [CO~2~‐^14^C]p‐N,N(dimethylamino)benzoate 2‐ethylhexyl ester (Padimate‐O). This material underwent slow decomposition to [^14^C]N‐nor‐Padimate‐O and [^14^C]N‐formyl‐N‐nor‐Padimate‐O. Nitrosation of [^14^C]Padimate‐O with sodium nitrite afforded [^14^C]N‐nitroso‐N‐nor‐Padimate‐O.
📜 SIMILAR VOLUMES
## Abstract O,O‐Vi‐ [1‐^14^C]‐ethyl S‐ [N‐ethoxycarbonyl‐N‐methylcarbamoylmethyl] phosphorothiolothionate has been prepared with a specific activity of 1.97 mCi mmol^−1^. The procedure involved the interaction of [1‐^14^C]‐ethanol with phosphorus pentasulphide in benzene, followed by conversion of
Propylproline and N-demethyl-lincomycin, two i n t e r m e d i a t e s i n l i n c o m y c i n b i o s y n t h e s i s , were prepared i n r a d i o l a b e l e d form. [\*\*C]-labeled N-demethyllincomycin was s y n t h e s i z e d by a r e s t i n g cell suspension of a lincomycin n e g a t i v e
Carbon, nitrogen and oxygen NMR spectra of some nitro derivatives of pyrrole and imidazole have been investigated. The 13C chemical shifts of para-carbons and the 170 chemical shifts of the nitro group correlate qualitatively with the electron densities on these carbon and oxygen atoms, which in tur
## Abstract ^14^C‐Labelled vincristine was prepared from N‐desmethyl vinblastine by formylation with ^14^C‐formic acid. Excess radioactive formic acid was recovered as sodium formate. ^14^C‐Labelled N‐desmethyl‐N‐formyl‐leurosine was prepared analogously.
## N -(mercaptomethyl) -phthalimide-carbonyl-14C-S-(0,O- Dimethylphosphorodithioate) has been synthesized. The starting material was carboxyl labelled o-toluic acid which was oxidized to o-phthalic acid. Phthalimide (carbonyl-W) was prepared from o-pkthalic acid by subliming the ammonium salt of