Active metal bismuth is produced in situ via Sin/BiCl_3, system in aqueous media. Promoted by this active species. β-aminoesters and α-selenoesters are synthesized via reaction of α-bromoesters with 1 -(α-aminoalk...Active metal bismuth is produced in situ via Sin/BiCl_3, system in aqueous media. Promoted by this active species. β-aminoesters and α-selenoesters are synthesized via reaction of α-bromoesters with 1 -(α-aminoalkyl ) benzotriazole and diselenides in moderate to good yields.展开更多
In the presence of active metal bismuth (Bi) which was prepared from the combination of bismuth trichloride and sodium borohydride,aldehydes have been found to react with allyl bromide in aqueous media,and the corres... In the presence of active metal bismuth (Bi) which was prepared from the combination of bismuth trichloride and sodium borohydride,aldehydes have been found to react with allyl bromide in aqueous media,and the corresponding homoallylic alcohols were obtained in excellent yields with high chemo-and stereoselectivity.展开更多
Metallic bismuth crystal is one important and interesting semimetal that has attracted great attention owing to its unique thermal and electrical properties. Herein, we report a facile, green, cost-effective and susta...Metallic bismuth crystal is one important and interesting semimetal that has attracted great attention owing to its unique thermal and electrical properties. Herein, we report a facile, green, cost-effective and sustainable solvothermal process using ethanol, glycol, isopropanol, phenylcarbinol as solvent and commercial Bi_2O_3 as the starting material to produce high-purity metallic Bi with tunable morphologies on large scale. It is found that all alcohols are capable of reducing Bi_2O_3 to Bi and the reducibility of glycol is proved to be the strongest. The highest purity of the resultant Bi is calculated to be 99.74%. What's more, the morphology of final Bi particles is controllable by adding various types and concentrations of additives. As a consequence, our work lays the root for the large scale solvothermal production of high-purity Bi particles with various regular morphologies.展开更多
基金the National Natural Science Foundation of China ! 29872010,294938004NSF of Zhe-hang province, China and the Laboratory of O
文摘Active metal bismuth is produced in situ via Sin/BiCl_3, system in aqueous media. Promoted by this active species. β-aminoesters and α-selenoesters are synthesized via reaction of α-bromoesters with 1 -(α-aminoalkyl ) benzotriazole and diselenides in moderate to good yields.
文摘 In the presence of active metal bismuth (Bi) which was prepared from the combination of bismuth trichloride and sodium borohydride,aldehydes have been found to react with allyl bromide in aqueous media,and the corresponding homoallylic alcohols were obtained in excellent yields with high chemo-and stereoselectivity.
基金Supported by the Natural Science Foundation of China(51373096,11304198)
文摘Metallic bismuth crystal is one important and interesting semimetal that has attracted great attention owing to its unique thermal and electrical properties. Herein, we report a facile, green, cost-effective and sustainable solvothermal process using ethanol, glycol, isopropanol, phenylcarbinol as solvent and commercial Bi_2O_3 as the starting material to produce high-purity metallic Bi with tunable morphologies on large scale. It is found that all alcohols are capable of reducing Bi_2O_3 to Bi and the reducibility of glycol is proved to be the strongest. The highest purity of the resultant Bi is calculated to be 99.74%. What's more, the morphology of final Bi particles is controllable by adding various types and concentrations of additives. As a consequence, our work lays the root for the large scale solvothermal production of high-purity Bi particles with various regular morphologies.
