Cobalt-catalyzed sequential cyclization/cross-coupling reactions of 6-halo-1-hexene derivatives with Grignard reagents and their application to the synthesis of 1,3-diols
combination effectively catalyzes sequential cyclization/cross-coupling reactions of 6-halo-1-hexene derivatives with trialkylsilylmethyl, 1-alkynyl, and aryl Grignard reagents. The sequential cyclization/cross-coupling reactions are applied to the synthesis of 1,3-diols starting from siloxy-tethered 6-halo-1-hexene derivatives.
Silylium‐Catalyzed Alkynylation and Etherification Reactions of Benzylic Acetates
作者:Belén Rubial、Alfredo Ballesteros、José M. González
DOI:10.1002/ejoc.202200051
日期:2022.7.14
Bistriflimide-catalyzed coupling reactions of benzylacetates with both trimethyl(alkynyl)silanes and trimethyl(alkoxy)silanes lead to propargyl arenes and benzyl alkyl ethers, respectively. The acid assists the release of the reactive trimethylsilylium ion into the media, which is the ultimate catalytic species. The cationic nature of the processes is documented.