The first example of a hypervalent iodine(III)‐mediated oxidativefluorination of alkylsilanes by fluorideions without the use of transition metals is demonstrated. This reaction is operationally simple, scalable, and proceeds under mild reaction conditions. Mechanistic studies suggest the involvement of a single‐electron transfer resulting from the interaction of an organopentafluorosilicate and
An efficient one-potmethod for the regioselective bromination of allylicalcoholderivatives (two-step reaction sequence) followed by Sonogashira, Negishi, or Suzuki–Miyaura coupling reactions in the same reaction vessel (three-step reaction sequence) has been developed. The key reaction in these one-pot systems is the regioselective DBU-promoted trans HBr elimination of vicinal dibromides bearing
An Efficient Method for the Deallylation of Allyl Aryl Ethers Using Electrochemically Generated Nickel
作者:Akito Yasuhara、Atsushi Kasano、Takao Sakamoto
DOI:10.1021/jo9824706
日期:1999.5.1
Nickel Hydride Catalyzed Cleavage of Allyl Ethers Induced by Isomerization
作者:Andreas Berkefeld、Ivana Fleischer、Prasad M. Kathe
DOI:10.1055/s-0040-1706683
日期:2021.10
This report discloses the deallylation of O- and N-allyl functional groups by using a combination of a Ni-H precatalyst and excess Brønsted acid. Key steps are the isomerization of the O- or N-allyl group through Ni-catalyzed double-bond migration followed by Brønsted acid induced O/N–C bond hydrolysis. A variety of functional groups are tolerated in this protocol, highlighting its synthetic value