Stepwise post-modification immobilization of palladium Schiff-base complex on to the OMS-Cu (BDC) metal-organic framework for Mizoroki-Heck cross-coupling reaction
作者:Hassan Alamgholiloo、Sadegh Rostamnia、Asadollah Hassankhani、Jabbar Khalafy、Mehdi M. Baradarani、Ghodrat Mahmoudi、Xiao Liu
DOI:10.1002/aoc.4539
日期:2018.11
successfully immobilized within the pores of open metal site (OMS) metal organic frameworks (MOFs) with Schiff‐base (2‐Py‐SI) grafted in OMS‐Cu (BDC) using the hydrothermal method. This Schiff‐basecomplex on the Cu (BDC) greatly increased catalytic activity and acted as an efficient stabilizer of Pd ions. The hydrothermal method was a more efficient method for generating small metal ions in the MOF
钯离子通过水热法成功地被嫁接到OMS-Cu(BDC)中的Schiff碱(2-Py-SI)固定在开放金属位点(OMS)金属有机骨架(MOF)的孔中。这种在铜上的席夫碱络合物(BDC)大大提高了催化活性,并充当了Pd离子的有效稳定剂。水热法是在MOF结构中生成小金属离子的更有效方法。结果表明,Pd II @Cu(BDC)/ 2-Py-SI是有希望的Mizoroki-Heck偶联反应催化剂。所提出的催化剂具有更好的可循环性,并且可以重复使用几次而不会明显丧失活性。
Task-Specific Ionic Liquid as Reagent and Reaction Medium for the One-Pot Horner–Wadsworth–Emmons–Type Reaction Under Microwave Irradiation
作者:Hassan Valizadeh、Abbas Shockravi
DOI:10.1080/00397910902898650
日期:2009.11.18
A task-specific imidazolium-based phosphinite ionic liquid (IL-OPPh2) was used as the dual solvent-reagent for the synthesis of E-cinamates and coumarin derivatives via the one-pot Horner-Wadsworth-Emmons-type reaction. The ionic liquid containing its corresponding phosphinite moiety was reacted with a-chloro esters and benzaldehyde or salicylaldehyde derivatives in the presence of sodium methoxide under microwave irradiation to produce the related E-cinamates or coumarins, respectively. The satisfactory results were obtained with good yields, short reaction time, and simple experimental procedure.