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Cover Picture: Enantioselective Addition of a 2‐Alkoxycarbonyl‐1,3‐dithiane to Imines Catalyzed by a Bis(guanidino)iminophosphorane Organosuperbase (Angew. Chem. Int. Ed. 52/2015) 下载免费PDF全文
Dr. Azusa Kondoh Masafumi Oishi Tadahiro Takeda Prof. Dr. Masahiro Terada 《Angewandte Chemie (International ed. in English)》2015,54(52):15587-15587
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Alesandere Ortega Dr. Rubén Manzano Prof. Dr. Uxue Uria Prof. Dr. Luisa Carrillo Prof. Dr. Efraim Reyes Prof. Dr. Tomas Tejero Prof. Dr. Pedro Merino Prof. Dr. Jose L. Vicario 《Angewandte Chemie (International ed. in English)》2018,57(27):8225-8229
Racemic cyclopropyl ketones undergo enantioselective rearrangement to deliver the corresponding dihydrofurans in the presence of a chiral phosphoric acid as the catalyst. The reaction involves activation of the donor‐acceptor cyclopropane substrate by the chiral Brønsted acid catalyst to promote the ring‐opening event, thus generating a carbocationic intermediate that subsequently undergoes cyclization. Computational studies and control experiments support this mechanistic pathway. 相似文献
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