Catalytic Synthesis of N-Unprotected Piperazines, Morpholines, and Thiomorpholines from Aldehydes and SnAP Reagents
作者:Michael U. Luescher、Jeffrey W. Bode
DOI:10.1002/anie.201505167
日期:2015.9.7
available SnAP (stannyl amine protocol) reagents allow the transformation of aldehydes and ketones into a variety of N‐unprotected heterocycles. By identifying new ligands and reaction conditions, a robust catalytic variant that expands the substrate scope to previously inaccessible heteroaromatic substrates and new substitution patterns was realized. It also establishes the basis for a catalytic enantioselective
SnAP Reagents for the Transformation of Aldehydes into Substituted Thiomorpholines-An Alternative to Cross-Coupling with Saturated Heterocycles
作者:Cam-Van T. Vo、Gediminas Mikutis、Jeffrey W. Bode
DOI:10.1002/anie.201208064
日期:2013.2.4
It's a SnAP! The transformation of aldehydes into N‐unsubstituted 3‐thiomorpholines provides a convenient alternative to metal‐catalyzed cross‐coupling reactions, which are generally unsuited to the functionalization of saturated N‐heterocycles. A copper‐mediated radical cyclization is the key to the mild conditions, high functional group tolerance, and broad substrate scope offered by these reagents