Palladium Catalyzed Cyclizations of Oxime Esters with 1,2-Disubstituted Alkenes: Synthesis of Dihydropyrroles
摘要:
Pd-catalyzed cyclizations of oxime esters with 1,2-dialkylated alkenes provide an entry to chiral dihydropyrroles. Substrate and catalyst controlled strategies for selective product formation (vs alternative pyrroles) are outlined.
Copper catalyzed Heck-like cyclizations of oxime esters
作者:Adele Faulkner、Nicholas J. Race、James S. Scott、John F. Bower
DOI:10.1039/c4sc00652f
日期:——
Copper catalyzed Heck-like cyclizations of oxime esters are described. This new protocol is an effective alternative to Pd-based systems and highlights the value of replacing precious metal catalysts with cheaper and more sustainable variants.
Visible-Light-Mediated Two Transient C(sp<sup>3</sup>) Radical-Selective Cross-Coupling via Nickel Catalyst Continuous Capture: Synthesis of Pyrroline Derivatives
Two C(sp3) radicals cross-coupling as a straightforward method for constructing C(sp3)–C(sp3) bonds has attracted extensive attention from chemists. Unfortunately, the strategy is challenging due to unexpected reactions of transient radicals, such as homocoupling and hydrogen atom transfer. In this regard, capturing open-shell radicals by metal catalysts can effectively enhance the selectivity of transient