An
efficient anodic C(sp3)–H acyloxylation protocol
has been established via intermolecular cross-dehydrogenative C(sp3)–O coupling. The protocol provides various C2-acyloxy
indolin-3-ones without the addition of metal catalysts and external
oxidants because indolin-3-ones can be directly oxidized at the anode.
The effective application of several medical drugs and the realization
of the gram-scale experiment have proven the practicality of this
protocol.
An electrochemical protocol for the construction of substituted isoindolinones via reduction/amidation of 2-carboxybenzaldehydes and amines has been realized. Under metal-free and external-reductant-free electrolytic conditions, the reaction achieves the cascade formation of intermolecular C−N bonds and provides a series of isoindolinones in moderate to good yields. The deuteriumlabeling experiment proves that the hydrogen in the methylene of the product is mainly provided by H 2 O in the system. I soindolinones are an important class of nitrogen-containing structural scaffolds, which appear in a myriad of natural products, biologically active molecules, 1 and clinical drugs, 2 such as TNF-α production inhibitors CC3052 and DWP205190, nonsteroidal anti-inflammatory drug indoprofen, anticancer drug lenalidomide, etc. (Figure 1). For their
An efficient cathodic carbonyl alkylation of aryl ketones
or aldehydes
with unactivated alkyl halides has been realized through the electrochemical
activation of iron. The protocol is believed to include a radical–radical
coupling or nucleophilic addition process, and the formation of ketyl
radicals and alkyl radicals has been demonstrated. The protocol provides
various tertiary or secondary alcohols by the formation of intermolecular
C–C bonds under safe and mild conditions, is scalable, consumes
little energy, and exhibits a broad substrate scope.
A regioselective
coupling of aliphatic ketones with alkenes has
been realized by cathodic reduction. This reaction enables the formation
of ketyl radicals and the activation of challenging alkenes under
mild electrolysis conditions, providing an effective protocol for
accessing diverse tertiary alcohols with substrate-dependent regioselectivity.
The practicability of this reaction is demonstrated by scale-up experiments.
The hydrogen source for the products, the migration isomerization
of allylarenes, and the applicability of internal alkenes are demonstrated
by control experiments.
Additional degrees of freedom existed in dual-motor coupling system bring considerable challenge to the optimal control of electric vehicles. Moreover, the stochastic characteristic of vehicle mass can further increase this challenge. A receding horizon control (RHC) strategy in consideration of stochastic vehicle mass is proposed in this study to respond to this challenge. Aiming at an electric vehicle with dual-motor coupling, a Markov chain is firstly deployed to predict future driving conditions by a formulated state transition probability matrix, based on historical driving cycles in real-world. Then, future required power is predicted by the predicted driving conditions, stochastic vehicle mass and road gradient, where the stochastic vehicle mass is formulated as stochastic variables in different bus stops. Finally, dynamic programming is employed to calculate the optimal vector of the vehicle within the defined prediction horizon, and only the first control values extracted from the optimal control vector are used to execute real-time power distribution control. The simulation results show that the proposed strategy is reasonable and can at least reduce electric consumption by 4.64%, compared with rule-based strategy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.