4208-57-5Relevant articles and documents
Rh-Catalyzed Coupling of Aldehydes with Allylboronates Enables Facile Access to Ketones
Zhang, Kezhuo,Huang, Jiaxin,Zhao, Wanxiang
supporting information, (2022/02/21)
We present herein a novel strategy for the preparation of ketones from aldehydes and allylic boronic esters. This reaction involves the allylation of aldehydes with allylic boronic esters and the Rh-catalyzed chain-walking of homoallylic alcohols. The key to this successful development is the protodeboronation of alkenyl borylether intermediate via a tetravalent borate anion species in the presence of KHF2 and MeOH. This approach features mild reaction conditions, broad substrate scope, and excellent functional group tolerance. Mechanistic studies also supported that the tandem allylation and chain-walking process were involved.
Unexpectedly high activity of Zn(OTf)2·6H2O in catalytic Friedel-Crafts acylation reaction
He, Fei,Wu, Huayue,Chen, Jiuxi,Su, Weike
, p. 255 - 264 (2008/03/17)
Zn(OTf)2·6H2O was used to promote Friedel-Crafts acylation of aromatics. The work describes the high activity and efficiency of Zn(OTf)2·6H2O in acylation of aromatics, and the catalyst has surpassed most metal triflates in dispensing when dried at high temperature under vacuum before use. Copyright Taylor & Francis Group, LLC.
Friedel-Crafts acylation of furan and thiophene using ytterbium(III) trifluoromethanesulfonate in [BPy][BF4] ionic liquid
Su, Weike,Wang, Yan
, p. 398 - 400 (2007/10/03)
Friedel-Crafts reactions of furan and thiophene have been catalyzed by ytterbium(III) trifluoromethanesulfonate in [BPy][BF4] (n-butylpyridinium tetrafluoroborate) ionic liquid to produce intermediates of pharmaceuticals with good yields. The catalyzing system [BPy][BF 4]/Yb(OTf)3 could be reused.