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DOI: 10.1055/s-2006-950240
Aqueous-Phase Suzuki-Miyaura Cross-Coupling Reactions of Free Halopurine Bases
Publication History
Publication Date:
10 October 2006 (online)
Abstract
The Suzuki-Miyaura reaction of 9-unsubstituted 2-, 6-, and 8-halopurine bases with diverse aryl- and alkenylboronic acids in water-acetonitrile mixtures under microwave irradiation was used for the single-step synthesis of arylpurines. In most cases the product crystallized directly from the reaction mixture in high yields and good purity. The scope and limitations of these reactions were studied.
1 Introduction
2 Results and Discussion
2.1 Cross-Coupling Reactions of 6-Chloro-9H-purine
2.2 Cross-Coupling Reactions of 2-Amino-6-chloro-9H-purine
2.3 Cross-Coupling Reactions of 8-Bromoadenine
2.4 Cross-Coupling Reactions of 2-Chloroadenine
2.5 Cross-Coupling Reactions of 2,6-Dichloro-9H-purine
2.6 NMR Analysis of Arylpurines and Determination of Regioselectivity
3 Conclusions
4 Experimental Section
5 References
Key words
purines - cross-coupling reactions - boronic acids - microwaves - water
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