Tetrahydrofuran ring opening and unexpected oxidation of the furyl ring in the reaction of bis(2-furyl) ditelluride with iodine and triphenylphosphine
作者:Sari M. Närhi、Kaisa Malo、Raija Oilunkaniemi、Risto S. Laitinen
DOI:10.1016/j.poly.2013.08.026
日期:2013.11
reaction of bis(2-furyl) ditelluride Fu2Te2 (1) with iodine in diethyl ether under ambient conditions expectedly yields FuTeI (2). The in situ reaction of 2 with triphenylphosphine affords Ph3PTe(Fu)I (3), which was characterized in the solid state by single crystal X-ray crystallography. The crystal structure of 3 shows linear P–Te–I backbone and T-shaped coordination around the tellurium atom. In the
在环境条件下,双(2-呋喃基)二碲化物Fu 2 Te 2(1)与碘在乙醚中的反应有望产生FuTeI(2)。在原位的反应2与三苯膦得到博士3 PTE(富)I(3),通过单晶X射线晶体学,其表征在固体状态。3的晶体结构显示线性P–Te–I主链和碲原子周围的T形配位。在固体晶格中,3作为离散分子存在,并通过H⋯I氢键网络排列在一起。没有证据表明次级键Te⋯I或I⋯I相互作用是许多碲-碘化合物所特有的。当Fu 2 Te 2与I 2和PPh 3的两步反应在四氢呋喃中进行时,获得了产物的混合物。通过单晶X射线晶体学鉴定的主要产物是Ph 3 P(C 4 H 5 O 2)} 2 [TeI 4 ](4),Ph 3 P(CH 2)4 PPh3 } [TeI 4 ]·2CH 2 Cl 2(5 ·2CH 2 Cl 2),Fu 2 Te(6),(CH 2)4 TeI 2(7),Ph 3 PO和元素碲。已经讨论了产物的形成,涉及THF开环,PPh