102022-17-3Relevant articles and documents
Silver-Promoted Radical Ring-Opening/Pyridylation of Cyclobutanols with N-Methoxypyridinium Salts
Chen, Yu,Zhang, Guang-Yi,Guo, Chan,Lan, Ping,Banwell, Martin G.,He, Yu-Tao
, (2022/03/03)
The silver-promoted reaction of tertiary cyclobutanols with N-methoxypyridinium salts enables the efficient synthesis of a range of C2-substituted pyridines. The overall process likely occurs by ring-opening (via β-scission) of the cyclobutoxy radical to generate the corresponding γ-keto alkyl radical that itself adds to the pyridinium salt. A wide range of tertiary cyclobutanols and N-methoxypyridinium salts are compatible with the reaction conditions.
Enantioselective synthesis of quinolizidines and indolizidines via a catalytic asymmetric hydrogenation cascade
Rueping, Magnus,Hubener, Lukas
, p. 1243 - 1246 (2011/07/31)
A catalytic enantioselective synthesis of a new class of quinolizidines and indolizidines is presented. An asymmetric Bronsted acid catalyzed hydrogenation cascade as well as a sequential Bronsted acid/metal catalyzed hydrogenation protocol of 2-substituted quinolines yields benzofused quinolizidines and indolizidines in good yields with high diastereo- and enantioselectivities. Georg Thieme Verlag Stuttgart - New York.