Regiochemistry in the Pd-Mediated Coupling between 6,8-Dihalopurines and Organometallic Reagents.

Jens M. J. Nolsøe,Lise-Lotte Gundersen,Frode Rise,Uffe Anthoni,Per H. Nielsen,Carsten Christophersen,Hong-Gen Wang,Xin-Kan Yao,Hong-Gen Wang,J.-P. Tuchagues,Mattias Ögren

Acta Chemica Scandinavica（1999）

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摘要

The regiochemistry in the Pd-mediated coupling between 6,8-dihalopurines and organometallic reagents has been examined. When 6,8-dichloropurines were reacted. highly selective coupling in the purine 6-position was obtained and the regiochemical outcome was completely reversed when a better leaving group (Br or I) was introduced at C-8.

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