- Microwave assisted rapid synthesis of phenoxazines and benzopyridoxazines
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A facile protocol for the synthesis of phenoxazines and benzopyridoxazines by Smiles rearrangement have been demonstrated in short reaction time under microwave irradiation. The control experiments suggest that a reaction proceeds through Smiles rearrangement followed SNAr ring closure by in situ cascade process. In our present work, both the electron donating and electron withdrawing groups were tolerant and provided a corresponding phenoxazine/benzopyridoxazine in good to moderate yields.
- Anchan, Kavitha,Puttappa, Nagaswarupa H.,Poongavanam, Baburajan,Sarkar, Sujit Kumar
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p. 635 - 646
(2020/11/27)
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- Synthesis and enantioselective hydrogenation of seven-membered cyclic imines: Substituted dibenzo[b,f][1,4]oxazepines
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Highly enantioselective hydrogenation of seven-membered cyclic imines, substituted dibenzo[b,f][1,4]oxazepines, was achieved, with up to 94% ee, by using the [Ir(COD)Cl]2/(S)-Xyl-C3*-TunePhos complex as the catalyst in the presence of morpholine-HCl.
- Gao, Kai,Yu, Chang-Bin,Li, Wei,Zhou, Yong-Gui,Zhang, Xumu
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p. 7845 - 7847
(2011/09/13)
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