Stereo‐ and Regioselective Cu‐Catalyzed Hydroboration of Alkynyl Chalcogenoethers
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DOI: 10.1002/cctc.202000395
Abstract: A mild stereo‐ and regioselective Cu‐catalyzed hydroboration method for the synthesis of (Z)‐seleno‐alkenyl boronates and (Z)‐thio‐alkenylboronates from internal alkynes in the presence of commercially available B2pin2 is presented. This highly selective transformation relies on the… read more here.
Keywords: regioselective catalyzed; stereo regioselective; alkynyl chalcogenoethers; hydroboration alkynyl ... See more keywords
Lanthanide aryloxides catalyzed hydroboration of aldehydes and ketones
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DOI: 10.1016/j.catcom.2018.04.014
Abstract: Abstract The lanthanide aryloxides Ln(OAr)3(THF)2 (Ar = Ar1 = 2,6-tBu2-4-MeC6H2, Ln = Yb (1), Y (2); Ar = Ar2 = 2,6-iPr2C6H3, Ln = Y (3); Ar = Ar3 = 2,6-Me2C6H3, Ln = Y (4); Ar = Ar1, Ln = Sm (5), Nd (6)) could be served as highly efficient catalysts for the hydroboration of aldehydes and ketones… read more here.
Keywords: aldehydes ketones; aryloxides catalyzed; lanthanide aryloxides; catalyzed hydroboration ... See more keywords
Cu-Catalyzed Hydroboration of Benzylidenecyclopropanes: Reaction Optimization, (Hetero)Aryl Scope, and Origins of Pathway Selectivity.
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DOI: 10.1021/acscatal.9b03557
Abstract: The copper-catalyzed hydroboration of benzylidenecyclopropanes, conveniently accessed in one step from readily available benzaldehydes, is reported. Under otherwise identical reaction conditions, two distinct phosphine ligands grant access to different products by either suppressing or promoting… read more here.
Keywords: reaction optimization; catalyzed hydroboration; hydroboration benzylidenecyclopropanes; benzylidenecyclopropanes reaction ... See more keywords
Access to a pair of ambiphilic phosphine-borane regioisomers by rhodium-catalyzed hydroboration.
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DOI: 10.1039/c8dt01467a
Abstract: Lewis basic substrates, such as vinylphosphines and enamines, can be problematic for transition-metal catalysed hydrofunctionalization reactions due to their propensity to ligate and deactivate transition-metal catalysts as well as form direct Lewis adducts with reaction… read more here.
Keywords: access pair; phosphine; rhodium catalyzed; pair ambiphilic ... See more keywords
Palladium-catalyzed hydroboration reaction of unactivated alkynes with bis (pinacolato) diboron in water
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DOI: 10.1039/d1ra09136k
Abstract: A highly efficient and mild palladium-catalyzed hydroboration of unactivated internal alkynes in water is described. Both aryl- and alkyl-substituted alkynes proceeded smoothly within the reaction time to afford the desired vinylboronates in moderate to high… read more here.
Keywords: bis pinacolato; pinacolato diboron; catalyzed hydroboration; palladium catalyzed ... See more keywords
Organoaluminum hydrides catalyzed hydroboration of carbonates, esters, carboxylic acids, and carbon dioxide.
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DOI: 10.1039/d2dt00785a
Abstract: The reductive functionalization of the CO unit of carbonates, carboxylic acids, esters, and CO2, respectively has received great attention since its introduction. This method is often used industrially for the synthesis of high value-added energy… read more here.
Keywords: hydrides catalyzed; carboxylic acids; organoaluminum hydrides; esters carboxylic ... See more keywords