Mechanism of co-dimerization of vinylboronates with terminal alkynes catalyzed by ruthenium-hydride complex

Recent Advances in Boron‐Substituted 1,3‐Dienes Chemistry: Synthesis and Application

“…The stoichiometric reactions monitored by 1 H NMR allowed us to propose the catalytic cycle of this process (Scheme ). The mechanism was later examined by density functional theory (DFT) calculations and kinetic measurements . DFT calculation showed that the rate‐determining step for the catalytic cycle is β‐hydride elimination of the diene .…”

“…The mechanism wasl ater examined by density functional theory( DFT) calculations and kinetic measurements. [142] DFT calculation showedt hat the rate-determining step for the catalytic cyclei sb-hydride elimination of the diene. [142] The transition state that determines the process rate is marked on the catalytic cycle (Scheme 57).…”

“…[142] DFT calculation showedt hat the rate-determining step for the catalytic cyclei sb-hydride elimination of the diene. [142] The transition state that determines the process rate is marked on the catalytic cycle (Scheme 57). Scheme51.…”

Wet carbonate-promoted radical arylation of vinyl pinacolboronates with diaryliodonium salts yields substituted olefins

“…1a) [11][12][13][14] , functional groups are needed to induce the vinyl group of boronates via precedent process or complicated conditions. Among them, the hydroboration of alkynes has gained much attention owing to efficiently access to arylvinylboronates via employing transition metal such as copper 15,16 , silver 17 , ruthenium 18 , etc. as catalyst ( Fig.…”