One step direct conversion of azides and benzyl carbamates to t-butyl carbamates is achieved using inexpensive and safe hydride source namely polymethylhydrosiloxane (PMHS) under Pd-C catalysis.
Copper-Catalyzed Oxidative Acetalization of Boronic Esters: An Umpolung Strategy for Cyclic Acetal Synthesis
作者:Eric M. Miller、Maciej A. Walczak
DOI:10.1021/acs.joc.0c00720
日期:2020.6.19
copper, and the conditions proved to be mild and were amenable to a variety of functional groups. We expanded the Chan–Lam coupling to include C(sp3) nucleophiles and converted them into corresponding acetals. This method allows for the orthogonal acetalization of substrates with reactive, acid-sensitive functional groups.