Variables used as inputs.

<p>Variables used as inputs.</p

Reduction of CO₂ into Methylene Coupled with the Formation of C–S Bonds under NaBH₄/I₂ System

A selective four-electron reduction of CO2 with thiophenol using NaBH4 as a reductant is described to access dithioacetals. This reaction provides a novel synthetic method for the highly selective conversion of CO2 into methylene, and a new access to molecular structures via formation of C–S bonds using CO2 as the C1 source

N,N,O-Tridentate Mixed Lithium–Magnesium and Lithium–Aluminum Complexes: Synthesis, Characterization, and Catalytic Activities

The syntheses and crystal structures of a series of heterobimetallic Li/Mg and Li/Al complexes prepared from an N,N,O-tridentate ligand are described. The ligand HOC­(CH2)5CH2N­(Me)­CH2CH2NMe2 (LH) and nBu2Mg were used to synthesize the homometallic magnesium alkoxide [{LMgOC­(CH2)5CH2N­(Me)­CH2CH2NMe2}2] (1), which was reacted with nBuLi to afford the lithium alkylmagnesiate [{Bu2Mg­{LiOC­(CH2)5CH2N­(Me)­CH2CH2NMe2}}2] (2). Complex 2 was then hydrolyzed to produce [{BuMgOLi­{LiOC­(CH2)5CH2N­(Me)­CH2CH2NMe2}2}2] (3). The sequential reaction of LH in diethyl ether with RAlMe2 (R = Me, Cl) and nBuLi aforded two lithium aluminate complexes containing a polymeric structure of one-dimensional chains [{−LiOC­(CH2)5CH2N­(Me)­CH2CH2NMe2}­Al­(Me)­(n-Bu)­CH3−}n] (4) and [{−LiOC­(CH2)5CH2N­(Me)­CH2CH2NMe2}­Al­(n-Bu)2CH2−}n] (5), respectively. Each of the complexes 1–5 was structurally characterized and tested for its capability to catalyze Meerwein–Ponndorf–Verley (MPV) reactions. Heterobimetallic complexes 2 and 3 exhibited catalytic activities better than those of homometallic magnesium complex 1 and heterobimetallic lithium aluminate complexes 4 and 5 for MPV reactions

Elimination of Chlorine (Radical) or Tosylate (Anion) from C2‘ of Nucleoside C3‘ Free Radicals as Model Reactions Postulated To Occur at the Active Site of Ribonucleotide Reductases¹

Elimination of Chlorine (Radical) or Tosylate (Anion) from C2‘ of Nucleoside C3‘ Free Radicals as Model Reactions Postulated To Occur at the Active Site of Ribonucleotide Reductases1</sup

Reduction of CO₂ with NaBH₄/I₂ for the Conversion of Thiophenols to Aryl Methyl Sulfides

We report a tandem reaction to realize reduction of carbon dioxide with thiophenols to generate aryl methyl sulfides under the NaBH4/I2 system with 18-crown-6 as the solvent. Thiophenols bearing electron-donating and electron-withdrawing groups are feasible in this reaction. Controlled experiment results indicate that 18-crown-6 plays a critical role in six-electron reduction of carbon dioxide

Measure index on the set of Dow Jones index.

<p>Measure index on the set of Dow Jones index.</p

Diagram of (2D)²PCA+RBFNN forecasting model.

<p>The model is divided five modules, including the database of stock market, variables calculated module, sliding window, dimension reduction module and RBFNN predictor.</p

The input and output data of AICA-SVR model.

<p>The input and output data of AICA-SVR model.</p

The actual Dow Jones index and its predicted values from ICA-CCA-SVR, MICA-SVR, and AICA-SVR.

<p>The actual Dow Jones index and its predicted values from ICA-CCA-SVR, MICA-SVR, and AICA-SVR.</p