Trifunctionalization of the Purine Scaffold Using Mg and Zn Organometallic Intermediates
摘要:
Starting from an appropriate 6-chloro-2-TMS-purine derivative, a regioselective functionalization of the purine scaffold was achieved successively at positions 8, 6, and 2 via zinc and magnesium intermediates which were generated either by a direct zincation with TMPZnCl.LiCl or by an l/Mg exchange with iPrMgCl.