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Synthesis of intermediates 11a–h.

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posted on 20.11.2012, 00:24 authored by Eman M. Dokla, Amr H. Mahmoud, Mohamed S. A. Elsayed, Ahmed H. El-Khatib, Michael W. Linscheid, Khaled A. Abouzid

Reagents and conditions: (a) SOCl2, reflux, 5 h; (b) NaN3, acetone, −10°C, 30 min; (c) Benzene, 70°C, 3 hrs.