Cited by 125
An efficient protocol for the selective synthesis of α-mono or α,α′-dihalo ketones <italic>via</italic> a water-controlled chemodivergent and regiospecific cascade reaction has been developed.
Liaoning Technical University
Publishes on Catalytic C–H Functionalization Methods, Sulfur-Based Synthesis Techniques, Neural and Behavioral Psychology Studies. 8 papers and 396 citations.
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An efficient protocol for the selective synthesis of α-mono or α,α′-dihalo ketones <italic>via</italic> a water-controlled chemodivergent and regiospecific cascade reaction has been developed.
A simple and efficient route for the synthesis of <italic>Z</italic>-β-sulfonyl-α,β-unsaturated carbonyl compounds by using water as the solvent and hydrogen source is developed.
A series of rare-earth (RE) metal complexes (Y, Sm, Nd, and La) stabilized by polydentate N-methylethylenediamine-bridged tris(phenolato) ligands was synthesized and characterized. Lanthanum complexes showed good activity in catalyzing the cycloaddition reaction of terminal epoxides with CO2 under ambient conditions (i.e., room temperature, 1 bar CO2), giving rise to cyclic carbonates in 49–99% yields. More importantly, generally challenging internal epoxides were also transformed into cyclic carbonates in 70–99% yields in the presence of 1 bar CO2 at 60 °C. This is the first RE-based catalyst for efficient cycloaddition of CO2 and epoxides under ambient conditions and is among the most active catalysts for this important transformation. The lanthanum complex was also recycled six times. Kinetic study of the cycloaddition of cyclohexene oxide and CO2 was conducted, and the kinetic equation was determined as follows: rate = k[epoxide]1[CO2]0[cat.]1.26[TBAI]0.4. The Gibbs activation energy (333 K) was determined to be 29.8 kcal/mol.
Meditation has been shown to improve creativity in some situation. However, little is known about the brain systems underling insight into a problem when the person fails to solve the problem. Here, we examined the neural correlation using Chinese Remote Association Test, as a measure of creativity. We provide a solution following the failure of the participant to provide one. We examine how meditation in comparison with relaxation influences the reaction of the participant to a correct solution. The event-related functional magnetic resonance imaging showed greater activity, mainly distributed in the right cingulate gyrus (CG), insula, putamen, inferior frontal gyrus (IFG), and the bilateral middle frontal gyrus (MFG), the inferior parietal lobule (IPL) and the superior temporal gyrus (STG). This pattern of activation was greater following 5 h of meditation training than the same amount of relaxation. Based on prior research, we speculate on the function of this pattern of brain activity: (i) CG may be involved in detecting conflict and breaking mental set, (ii) MFG/IFG may play an important role in restructuring of the problem representation, (iii) insula, IPL and STG may be associated with error detection, problem understanding or general attentive control and (iv) putamen may be activated by 'Aha' feeling.