Die 1,3-diphenylcyclopentadienylkomplexe von Natrium, Indium(I), Thallium(I) und Eisen(II): Röntgenstrukturanalyse von Tl(C5H3Ph2)(THF) und Fe(C5H3Ph2)2
摘要:
1,4-Diphenylcyclopentadiene (1) reacts with TlOC2H5 or NaNH2 to give the corresponding half-sandwich complexes Na(C(5)H(3)Ph(2)) (2) and Tl(C(5)H(3)Ph(2)) (4). 2 reacts with InCl to form In(C(5)H(3)Ph(2)) (3), and 2 as well as 4 react with FeCl2 to form Fe(C(5)H(3)Ph(2))(2) (5). The H-1, C-13 NMR and mass spectra of the new compounds, as well as the X-ray crystal structure analyses of 4 and 5, are reported and discussed.
Rhodium‐Catalyzed Benzylic Addition Reactions of Alkylarenes to Michael Acceptors
作者:Yuntong Li、Wen‐Qiang Wu、Hui Zhu、Qi‐Kai Kang、Lun Xu、Hang Shi
DOI:10.1002/anie.202207917
日期:2022.8.26
A rhodium catalyzed benzylic C(sp3)− C(sp3) bond formation with Michaelacceptors was achieved. The catalyst is proposed to activate the aromatic ring via η6-coordination, dramatically facilitating benzylic deprotonation and addition of the resulting carbanion to the electrophile in the absence of a base. This byproduct-free method features a wide scope of alkylarenes bearing primary, secondary, or