Air‐Stable Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>‐EDTA‐Ni(0) as an Efficient Recyclable Magnetic Nanocatalyst for Effective Suzuki‐Miyaura and Heck Cross‐Coupling via Aryl Sulfamates and Carbamates
The synthesis of inexpensive and novel air‐stable Ni(0) nanoparticles immobilized on the EDTA‐modified Fe3O4@SiO2 nanocatalyst was investigated in Suzuki‐Miyaura and Heckcross‐couplingreactions. This catalytic system displayed a greatly improved substrate scope for the carbon–carbon bond formations starting from a wide range of green and economical electrophiles aryl and heteroaryl carbamates and
廉价且新颖的,稳定的,稳定在EDTA修饰的Fe 3 O 4 @SiO 2上的Ni(0)纳米颗粒的合成在Suzuki-Miyaura和Heck交叉偶联反应中研究了纳米催化剂。该催化体系通过在温和,操作简单的反应条件下通过高效方法,从广泛的绿色和经济亲电氨基甲酸酯和杂芳基氨基甲酸酯和氨基磺酸盐开始,显着改善了碳-碳键形成的底物范围。合成的多相催化剂还通过FT-IR,TEM,XRD,DLS,FE-SEM,UV-Vis,EDX,XPS,TGA,NMR,VSM,ICP和元素分析技术进行了全面表征。可以通过外部磁场容易地回收异质磁性纳米催化剂,并且在催化剂的沥滤可忽略不计并且活性没有实质性降低的情况下,至少七次重复用于接下来的反应至少七次。所有这些亮点使本协议变得有趣,
Compound
申请人:——
公开号:US20040019016A1
公开(公告)日:2004-01-29
There is provided a compound of Formula I
1
wherein each T is independently selected from H, hydrocarbyl, —F—R, and a bond with one of D, E, P or Q, or together with one of P and Q forms a ring; Z is a suitable atom the valency of which is m; D, E and F are each independently of each other an optional linker group, wherein when Z is nitrogen E is other than CH
2
and C═O; P, Q and R are independently of each other a ring system; and at least Q comprises a sulphamate group.
Highly efficient nickel/phosphine catalyzed cross-couplings of diarylborinic acids with aryl tosylates and sulfamates
作者:HaiHua Ke、XiaoFeng Chen、YuanYuan Feng、Gang Zou
DOI:10.1007/s11426-014-5138-3
日期:2014.8
diarylborinic acids with aryltosylates and sulfamates are reported for construction of biaryls using a tri(4-methoxyphenyl)phosphine-supported nickel catalyst system: Ni[P(4-MeOC6H4)3]2Cl2/2P(4-MeOC6H4)3 in the presence of K3PO4·3H2O in toluene. A variety of unsymmetrical biaryls could be obtained in good to excellent yields with 1.5–3 mol% or 3–5 mol% catalyst loadings for aryl sulfamates and tosylates, respectively
据报道,二芳基硼酸与芳基甲苯磺酸盐和氨基磺酸盐的高效交叉偶联用于使用三(4-甲氧基苯基)膦负载的镍催化剂体系构建联芳基:Ni [P(4-MeOC 6 H 4)3 ] 2 Cl 2在K 3 PO 4 ·3H 2存在下/ 2P(4-MeOC 6 H 4)3甲苯中的O。分别以1.5–3 mol%或3–5 mol%的催化剂负载量,芳基氨基磺酸盐和甲苯磺酸盐可以获得各种不对称的联芳基,收率非常好。与常规的镍与芳基硼酸的镍催化的Suzuki偶联形成鲜明对比,与与镍/膦催化剂体系催化的二芳基硼酸的偶联相比,芳基磺酸盐出乎意料地显示出比相应的甲苯磺酸盐更高的反应性。
SUBSTITUTED DICYANOPYRIDINES AND USE THEREOF
申请人:Vakalopoulos Alexandros
公开号:US20130210795A1
公开(公告)日:2013-08-15
The present application relates to novel substituted dicyanopyridines, to processes for their preparation, to their use for the treatment and/or prophylaxis of diseases and to their use for preparing medicaments for the treatment and/or prophylaxis of diseases, preferably for the treatment and/or prophylaxis of cardiovascular disorders.
[EN] 1,2,4-TRIAZOLE DERIVATIVES CONTAINING A SULPHAMATE GROUP AS AROMATASE INHIBITORS<br/>[FR] DERIVES 1,2,4-TRIAZOLE CONTENANT UN GROUPE SULFAMATE EN TANT QU'INHIBITEURS D'AROMATASE
申请人:STERIX LTD
公开号:WO2003045925A1
公开(公告)日:2003-06-05
There is provided a compound of Formula (I), wherein each T is independently selected from H, hydrocarbyl, -F-R, and a bond with one of D, E, P or Q, or together with one of P and Q forms a ring; Z is a suitable atom the valency of which is m; D, E and F are each independently of each other an optional linker group, wherein when Z is nitrogen E is other than CH2 and C=O; P, Q and R are independently of each other a ring system; and at least Q comprises a sulphamate group.