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Solid-phase Synthesis of [4.4] Spirocyclic Oximes
Published on: February 6, 2019
Application of Silica-Supported Alkylating Reagents in a One-Pot, Sequential Protocol to Diverse Benzoxathiazepine
Saqib Faisal1,2, Pradip K Maity1,2, Qin Zang1,2
1Department of Chemistry, University of Kansas , 1251 Wescoe Hall Drive, Lawrence, Kansas 66045-7582, United States.
Abstract:
Applications of silica-ROMP reagents in a one-pot, sequential protocol have been developed for the synthesis of a variety of diverse benzoxathiazepine 1,1-dioxides. This protocol includes sulfonylation, intramolecular SNAr, alkylation with silica-supported oligomeric benzyl (Si-OBPn) and triazole (Si-OTPn) phosphates, and intermolecular SNAr addition with a number of secondary amines in one-pot to afford a variety of unique benzoxathiazepine 1,1-dioxides sultams in good to excellent yields.
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