Facile synthesis of furan derivatives.
作者:Hiroshi KASHIHARA、Hiroshi SUEMUNE、Naomi TSUNEHIRO、Kiyoshi SAKAI
DOI:10.1248/cpb.38.2581
日期:——
The enones (II), which were obtained from dimethyl 4, 5-isopropylidenedioxy-2-oxopentylphosphonate (Ia) and various aldehydes, were easily converted to 2-alkenylfurans (III) by treatment with p-TsOH in MeOH. In a similar manner, the furfuryl phosphonate (IVa) and the 3-methylfurfuryl phosphonate (IVb) were obtained from Ia and its 3-methylated analogue (Ib), respectively.
从二甲基4,5-异丙基二氧基-2-氧代戊烷基磷酸酯(Ia)和各种醛类中获得的烯酮(II),通过在甲醇中用对甲苯磺酸(p-TsOH)处理,容易转化为2-烯基呋喃(III)。以类似的方式,从Ia及其3-甲基化类似物(Ib)分别获得了呋喃酯(IVa)和3-甲基呋喃酯(IVb)。