Application of Silica-Supported Alkylating Reagents in a One-Pot, Sequential Protocol to Diverse Benzoxathiazepine 1,1-Dioxides
摘要:
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.
Synthesis of Amino-Benzothiaoxazepine-1,1-dioxides Utilizing a Microwave-Assisted, S<sub>N</sub>Ar Protocol
作者:Alan Rolfe、Farman Ullah、Thiwanka B. Samarakoon、Ryan D. Kurtz、Patrick Porubsky、Benjamin Neuenswander、Gerald H. Lushington、Conrad Santini、Michael G. Organ、Paul R. Hanson
DOI:10.1021/co200076j
日期:2011.11.14
The development of a microwave-assisted, intermolecular SNAr protocol for the synthesis of a 126-member benzothiaoxazepine-1,1-dioxide library is reported. Diversification of 12 benzothiaoxazepine-1,1-dioxides was achieved in rapid fashion utilizing a variety of 2 degrees amines; and amino alcohols to generate an 80-member library. A second 48-member library was subsequently generated via a two-step alkylation, intermolecular SNAr diversification protocol.