## Abstract A wide range of anilines, benzylamines and some __N__‐heterocyclics can be __ortho__‐deuterated at room temperature using deuterium gas and cycloocta‐1,5‐dienyliridium(I)‐1,1,1,5,5,5‐hexafluoropentan‐2,4‐dionate in DMF or DMA. The method is applicable to labelling with tritium. Copyrigh
Iridium-catalysed labelling of anilines, benzylamines and nitrogen heterocycles using deuterium gas and cycloocta-1,5-dienyliridium(I) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate
✍ Scribed by Michael J Hickey; John R Jones; Lee P Kingston; William J.S Lockley; Andrew N Mather; Barry M McAuley; David J Wilkinson
- Book ID
- 104253532
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- French
- Weight
- 82 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
A wide range of variously substituted anilines, benzylamines, and nitrogen heterocycles may be conveniently deuterated by exchange with deuterium gas and cycloocta-1,5-dienyliridium(I) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate. The isotopic exchange can be carried out efficiently in dimethylformamide or dimethylacetamide, hence it is directly applicable to the deuteration of polar compounds such as pharmaceuticals. Isotope incorporation is rapid and yields ortho-regiospecificity.
📜 SIMILAR VOLUMES
## Abstract Aromatic compounds bearing an __ortho__‐directing substituent may be deuterated by exchange with deuterium oxide in the presence of a range of cycloocta‐1,5‐dienyliridium(I)1,3‐dionate catalysts. The exchange takes place in several dipolar aprotic solvents and is directly applicable to
## Abstract 5‐(2‐Aminophenyl)‐6‐azauracil 1 was converted to 7‐(6‐azauracil‐5‐yl)isatin 3, semicarbazone 4 of which was recyclized to 2,6‐bis(6‐azauracil‐5‐yl)aniline 5. This one served as a starting compound for preparation of other noncondensed two nuclear heterocycles 7, 9, 10 and condensed 1,2,