A New, Rapid, General Procedure for the Synthesis of Organic Molecules Supported on Methoxy-Polyethylene Glycol (MeOPEG) under Microwave Irradiation Conditions
作者:Andrea Porcheddu、Gian Filippo Ruda、Alessandro Sega、Maurizio Taddei
DOI:10.1002/ejoc.200390138
日期:2003.3
been made easier by use of microwave irradiation. A correct choice of the solvent employed for reaction or purification (DME, THF, 1,2-dichlorobenzene, iPrOH, ethylene glycol) allows working with 10 g of MeOPEG-OH, dissolved in 100 mL of solvent, under microwave irradiation conditions and for crystallization to be induced just by removal of the reaction flask from the microwave oven. No additional precipitation
使用微波辐射使 MeOPEG(分子量 5000)负载的分子沉淀和通过分级结晶纯化的过程变得更容易。正确选择用于反应或纯化的溶剂(DME、THF、1,2-二氯苯、iPrOH、乙二醇)允许在微波辐射条件下使用溶解在 100 mL 溶剂中的 10 g MeOPEG-OH仅通过从微波炉中取出反应烧瓶来诱导结晶。不需要额外的沉淀溶剂,因此减少了反应时间和使用大量易燃溶剂的潜在危险。报道了几种肽和四取代吡啶的合成。大量 MeOPEG-OH 可用于此过程,因此聚乙二醇辅助有机合成可视为一种有效的制备技术。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)