## Abstract Efficient methods for synthesising L‐[methy‐ ^13^C]methionine from [^13^C]iodomethane and L‐methionine, and L‐[3,4‐^13^C~2~] methionine from [^13^C~2~]ethene, are described; the preparation of [3,3‐^2^H~2~]methionine and [2,3,3‐^2^H~3~]methionine from methionine by an exchange method is
Synthesis of mixed halogenated trihalomethanes labelled with the stable isotopes 2H or 13C
✍ Scribed by H. L. Vermeulen; R. Sangaiah; L. M. Ball; A. Gold
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- French
- Weight
- 354 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
^2^H and ^13^C‐labelled bromodichloromethane and chlorodibromomethane were obtained in yields of 20 and 12% (for ^2^H) and 6 and 3% (for ^13^C) respectively from a convenient aluminum chloride‐catalyzed reaction of bromoethane with commercially‐available isotopically‐substituted chloroform. The products were purified by preparative gas chromatography and characterized by MS and ^13^C NMR, and by ^1^H for the ^13^C‐labelled material; mass and nuclear magnetic resonance spectroscopy data are reported.
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