The synthesis of k -l a b e l l e d methyl benzyl n i t r o s - amine is reported. Two fonns were prepared, one with a l a b e l i n the methyl group and one with l a b e l i n the methylene portion of t h e benzyl group. a c t i v i t i e s were approximately 5 mCi/mmol.
Synthesis of 14C-labelled nitrosamines. IV synthesis of 14C-methyl-(1-acetoxy) methyl nitrosamine and 1-14C-ethyl (acetoxy)ethyl nitrosamine
✍ Scribed by Horst Braun; Manfred Wiessler
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- French
- Weight
- 228 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A scheme is developed for synthesizing ^14^C labelled α‐acetates of secondary α‐hydroxylated nitrosamines. In this manner ^14^C‐methyl (1‐acetoxy)ethyl nitrosamine and 1‐^14^C‐ethyl (1‐acetoxy)ethyl nitrosamine are synthesized in 16.3 and 33.3% yield, radiochemically pure.
📜 SIMILAR VOLUMES
## Abstract The one‐step synthesis of ^14^C‐methyl(acetoxymethyl)nitrosamine (^14^C‐DMN‐OAc) of high specific activity is described. The product was shown to decompose by hydrolysis, as reported previously for the unlabelled material, and by self‐radiolysis, a process which occurred even in methyle
## Abstract A convenient method for the preparation of ethyl chlorocarbonate‐^14^C is described. This has led to a facile synthesis of N‐methyl‐^14^C secondary amines by lithium aluminum hydride reduction of an intermediate ^14^C‐carbamate. The reaction has also been employed in the preparation of
The title com ounds were prepared for metabolic studies, with the 14C labelen bein made a t methyl of the l-methyl-1H-tetrazol-5-ylthio ( k M d group in overall-radiochemical yglds of 26% and 22% based on barium [14C]carbonate, respectively.
## Abstract A synthetic procedure for C‐14‐labeled N‐methyl‐N‐nitrosoaniline is presented. Separate labeling of the methyl and phenyl side chains was achieved by using C‐14‐labeled methyl iodide and aniline, respectively. The overall yield of the four reactions was 62% and the final products were s
## Abstract Two labeled isotopomers of L‐tyrosine, L‐Tyr, have been synthesized using specific properties of the enzymes phenylanine ammonia lyase, PAL, and L‐phenylalanine hydroxylase. In an intermediate step [1‐^14^C]‐, and [2‐^14^C]‐L‐phenylalanine, L‐Phe, have been obtained from [1‐^14^C]‐, and