Synthesis of <i>E</i>-Alkyl Alkenes from Terminal Alkynes via Ni-Catalyzed Cross-Coupling of Alkyl Halides with B-Alkenyl-9-borabicyclo[3.3.1]nonanes
作者:Thomas Di Franco、Alexandre Epenoy、Xile Hu
DOI:10.1021/acs.orglett.5b02482
日期:2015.10.2
The first Ni-catalyzed Suzuki–Miyaura coupling of alkyl halides with alkenyl-(9-BBN) reagents is reported. Both primary and secondary alkyl halides including alkylchlorides can be coupled. The coupling method can be combined with hydroboration of terminal alkynes, allowing the expedited synthesis of functionalized alkyl alkenes from readily available alkynes with complete (E)-selectivity in one pot
Diastereoselective and Enantioselective Conjunctive Cross-Coupling Enabled by Boron Ligand Design
作者:Jesse A. Myhill、Christopher A. Wilhelmsen、Liang Zhang、James P. Morken
DOI:10.1021/jacs.8b09909
日期:2018.11.14
Enantio- and diastereoselective conjunctive cross-coupling of β-substituted alkenylboron "ate" complexes is studied. Whereas β-substitution shifts the chemoselectivity of the catalytic reaction in favor of the Suzuki-Miyaura product, use of a boronic ester ligand derived from acenaphthoquinone allows the process to favor the conjunctive product, even with substituted substrates.
Cu-catalyzed C(sp<sup>2</sup>)–N-bond coupling of boronic acids and cyclic imides
作者:Linn Neerbye Berntsen、Thomas Nordbø Solvi、Kristian Sørnes、David S. Wragg、Alexander H. Sandtorv
DOI:10.1039/d1cc04356k
日期:——
Cu-t the Ru. A general Cu-catalyzed method for (E)-enimide-formation is described. The process is mild and practical, and couples cyclic imides and alkenylboronic acids. The method can also be used to prepare N-arylimides.
Transfer of alk-1-enyl group from boron to boron: preparation of B-[(E)-alk-1-enyl]-9-borabicyclo[3.3.1]nonane
作者:Masayuki Hoshi、Kazuya Shirakawa、Akira Arase
DOI:10.1039/a801939h
日期:——
Treatment of (E)-alk-1-enyldicyclohexylborane 1 with B-methoxy-9-borabicyclo[3.3.1]nonane (B-MeO-9-BBN) at 0 °C results in transfer of alk-1-enyl group from boron to boron to give B-[(E)-alk-1-enyl]-9-BBN 2 with retention of configuration.