Facile Synthesis of Enantiomerically Pure 2- and 2,3-Disubstituted Furans Catalysed by Mixed Lewis Acids: An Easy Route to 3-Iodofurans and 3-(Hydroxymethyl)furans
作者:Mohammad Saquib、Irfan Husain、Brijesh Kumar、Arun K. Shaw
DOI:10.1002/chem.200900007
日期:2009.6.8
Enantiopure furan synthesis: A synthesis, catalysed by mixed Lewis acids (ZrCl4/ZnI2), of enantiomerically pure 2‐ and 2,3‐disubstituted furan derivatives, including 3‐iodofuran and 3‐ (hydroxymethyl)furan derivatives, in good to very good yields from commercially available 3,4,6‐tri‐O‐acetyl‐D‐glucal is described. Key features of this method are the use of inexpensive reagents in catalytic amounts
对映纯呋喃合成:由混合路易斯酸(ZrCl 4 / ZnI 2)催化的对映体纯的2和2,3-二取代呋喃衍生物,包括3-碘呋喃和3-(羟甲基)呋喃衍生物描述了从商业上可获得的3,4,6- tri - O-乙酰基-D-葡萄糖的非常好的收率。该方法的主要特点是使用廉价的催化量试剂,温和的反应条件和简便的后处理程序。