Magnetic CuFe2O4 nanoparticles: a retrievable catalyst for oxidative amidation of aldehydes with amine hydrochloride salts
作者:A. Suresh Kumar、B. Thulasiram、S. Bala Laxmi、Vikas S. Rawat、B. Sreedhar
DOI:10.1016/j.tet.2014.01.051
日期:2014.9
for the oxidative amidation of aldehydes with aminehydrochloridesalts is described. A wide range of amides have been synthesized in good to excellent yields under mild conditions. Chiral amide also synthesized from its corresponding chiral amine salt with retention of the stereochemistry. In particular, the performance of the magnetic separation of the catalyst was very efficient and an alternative
描述了磁性CuFe 2 O 4纳米颗粒在醛与胺盐酸盐的氧化酰胺化中的应用。在温和的条件下,已经以良好的收率合成了各种酰胺。还从其相应的手性胺盐合成了手性酰胺,并且保留了立体化学。特别地,催化剂的磁分离性能非常有效,并且可以替代时间,溶剂和耗能的分离程序。连续五个周期后,催化剂的催化活性保持不变,由于其效率,易处理性和成本效益,使其在环境方面无害且可广泛应用。
The palladium‐catalyzed arylation/alkylation of ortho‐CH bonds in N‐benzoyl α‐amino esterderivatives is described. In such a system both the NH‐amido and the CO2R groups in the α‐amino ester moieties play a role in successful CH activation/CC bond formation using iodoaryl coupling partners. A wide variety of functional groups and electron‐rich/deficient iodoarenes are tolerated. The yields obtained
的钯-催化的芳基化/烷基化邻-C H键ñ -苯甲酰基α氨基酯衍生物进行说明。在这样的系统既NH-酰氨基和CO 2中的α氨基酯部分的R基团发挥成功℃的作用 ħ激活/ C 使用碘代芳基偶联配偶C键的形成。可以容忍各种各样的官能团和富电子/缺碘的碘代芳烃。获得的产率为20至95%。