通常,可用于合成硫属元素金属的方法与苛刻条件,使用昂贵的金属,适用性广,纯化过程繁琐和收率低的缺点有关。为避免这些缺点,芳基取代的1,3-二烯基溴化物与硒氰酸钾/硫化钾(KSeCN / K 2S)导致了相应的硒代苯并噻吩的开发。碘相对较温和,价格便宜并且容易获得。通过该方法已经以高收率获得了几种不同取代的硒代苯并噻吩。使用该程序2-(4-氯苯基)噻吩,一种合成黑色素浓缩激素受体配体的关键中间体,参与了饮食失调,体重增加,肥胖,抑郁和焦虑症的治疗。尽管该反应基本上是一锅的,但它分两个步骤进行,涉及硒代氰酸酯/硫醇盐中间体,从而导致硒烯/噻吩。简单的操作,使用廉价的试剂和无金属的工艺使该程序对于容易获得取代的硒代苯并噻吩具有更大的吸引力。
Shabana, R.; Galal, A.; Mark, H. B., Phosphorus, Sulfur and Silicon and the Related Elements, 1990, vol. 48, # 1-4, p. 239 - 244
作者:Shabana, R.、Galal, A.、Mark, H. B.、Zimmer, Hans、Gronowitz, S.、Hoernfeldt, A.-B.
DOI:——
日期:——
Electronic Structure of Bichalcophenes
作者:Igor Novak、Siu Choon Ng、Yek Tann Chua、Chup Yew Mok、Hsing Hua Huang
DOI:10.1021/j100071a012
日期:1994.5
He I and He II photoelectron spectra of some isomeric bichalcophenes containing selenium were recorded. The electronic structure was analyzed and spectra assigned on the basis of empirical considerations: band contours, He I/He II intensity variations, and correlations with spectra of related molecules. Semiempirical MO calculations were used to estimate interring torsional barriers. The spectra indicate various interactions taking place among thiophene, furan, and selenophene pi orbitals. The relationship between electronic structure and formation of novel polymer materials is discussed.