Approach to the Synthesis of gem-Thiolated Alkylboronates via Cobalt-Catalyzed Diboration of Aldehydes.
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DOI: 10.1021/acs.orglett.3c00889
Abstract: A new method has been developed for the sequential gem-thioborylation of readily available aldehydes via the cobalt-catalyzed diboration reaction. The N-heterocyclic carbene (NHC)-cobalt complex has been used as a catalyst for the diboration of aldehydes… read more here.
Keywords: diboration; cobalt catalyzed; cobalt; via cobalt ... See more keywords
Mixed Diboration of Alkynes Catalyzed by LiOH: Regio- and Stereoselective Synthesis of cis-1,2-Diborylalkenes.
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DOI: 10.1021/acs.orglett.8b02830
Abstract: A diboration of terminal alkynes with an unsymmetrical diboron reagent pinBBdan has been achieved using LiOH as the catalyst in the presence of stoichiometric amounts of MeOH, affording 1,2-diborylalkenes with different boryl groups. The reaction… read more here.
Keywords: diboration alkynes; alkynes catalyzed; diboration; regio stereoselective ... See more keywords
Cobalt-Catalyzed 1,1-Diboration of Terminal Alkynes: Scope, Mechanism, and Synthetic Applications.
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DOI: 10.1021/jacs.7b00445
Abstract: A cobalt-catalyzed method for the 1,1-diboration of terminal alkynes with bis(pinacolato)diboron (B2Pin2) is described. The reaction proceeds efficiently at 23 °C with excellent 1,1-selectivity and broad functional group tolerance. With the unsymmetrical diboron reagent PinB-BDan… read more here.
Keywords: diboration terminal; terminal alkynes; cobalt catalyzed; diboration ... See more keywords
Alkylideneborate zwitterions and C-C coupling by atypical diboration of electron-rich alkynes.
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DOI: 10.1039/c7cc07409c
Abstract: The combination of electron-rich diaminoalkynes and ditopic Lewis acids diboranes(4) leads to unusual uncatalysed diboration reactions involving internal Lewis adduct, zwitterion, and C-C bond formation. The products are novel multicyclic, charge-separated compounds with intramolecular dative… read more here.
Keywords: electron rich; coupling atypical; electron; diboration ... See more keywords