One-pot solvothermal synthesized CoS2@MoS2 nanocomposites for selective reduction coupling reaction to synthesize imines
作者:Wenpeng Han、Junwei Wang、Xuekuan Li、Ligong Zhou、Ying Yang、Mingxing Tang、Hui Ge
DOI:10.1016/j.catcom.2019.03.007
日期:2019.5
Selective reduction coupling of nitroaromatics and aldehydes for imines synthesis has been investigated by using a series of bifunctional CoS2@MoS2 catalysts prepared by one-pot solvothermal method. Under optimal Co/Mo ratio of 0.75 and preparation temperature (180 °C), CoS2@MoS2–180-0.75 catalyst shows 96.5% nitrobenzene conversion, 93.0% imine selectivity and good versatility for substituted nitrobenzene
Selective reductive coupling of nitro aliphatic compounds with aldehydes in hydrogen using gold catalyst
作者:Larisha Cisneros、Pedro Serna、Avelino Corma
DOI:10.1016/s1872-2067(16)62493-2
日期:2016.10
Nitrones were synthesized in good yields directly from nitro aliphatic compounds, aldehydes, and H 2 using highly dispersed gold nanoparticles on titania. The high selectivity for nitrone synthesis contrasts with the platinum supported on carbon and corresponds to an increase from roughly 50% to 90%. The catalytic performance is tuned by precise control of the struc-ture of the active sites, the characteristics
使用高度分散的金纳米粒子在二氧化钛上直接从硝基脂肪族化合物、醛和 H 2 合成了高产率的硝酮。硝酮合成的高选择性与碳负载铂形成对比,对应于从大约 50% 增加到 90%。通过精确控制活性位点的结构、载体的特性和反应条件来调节催化性能。
Selective Reductive Coupling of Nitro Compounds with Aldehydes to Nitrones in H<sub>2</sub>Using Carbon-Supported and -Decorated Platinum Nanoparticles
作者:Larisha Cisneros、Pedro Serna、Avelino Corma
DOI:10.1002/anie.201402878
日期:2014.8.25
Nitrones were synthesized in high yields directly from nitro compounds, aldehydes, and H2 usingcarbon‐decorated platinum nanoparticles. The high selectivity for nitrone synthesis contrasts that of common supported metal catalysts and corresponds to an increase from roughly 6 to 97 %. The catalytic performance is tuned by precise control of the structure of the active sites and the characteristics
[EN] METHODS FOR PREPARING ALKYLFURANS<br/>[FR] PROCÉDÉS DE PRÉPARATION D'ALKYLFURANNES
申请人:MICROMIDAS INC
公开号:WO2014151100A1
公开(公告)日:2014-09-25
Provided herein are methods for preparing alkylfurans, such as 2,5-dialkylfurans and 2-alkylfurans. Furfural or 5-alkylfurfural can be reacted with aniline or diaminobenzene, or derivatives thereof, to form the corresponding imine, which can be reduced to form alkylfurans and to regenerate the aniline or diaminobenzene, or derivatives thereof. The alkylfuran may be, for example, 2,5-dimethylfuran or 2-methylfuran.
during the formation of iminesfrom aldehydes 1 and amines 2, is employed to promote the one-pot Mannich reaction of trimethylsilyloxyfuran 3a without addition of extra solvent or catalyst. This clean and quick reaction allows the obtention of a series of 5-substituted γ-butenolides 4 with good yields and modest diastereomeric ratio. A large panel of substituents is tolerated ranging fromaliphatic chains