Several substituted 3-halogenobenzo[b] tellurophenes have been synthesized by treating phenylacetylenes with TeO2 in acetic acid in the presence of a lithium halide. A mechanism is postulated involving an electrophilicattack by a solubilized tellurium species on the acetylenic bond with introduction of a halogen atom followed by cyclization to the benzo[b]tellurophene system. The benzo[b]tellurophenes
在卤化锂的存在下,通过在乙酸中用TeO 2处理苯乙炔,已经合成了几种取代的3-卤代苯并[ b ]碲二苯醚。推测一种机制涉及通过溶解的碲物种对炔键的亲电子攻击,引入卤素原子,然后环化至苯并[ b ]碲代芬系统。所述苯并[ b ]碲可以有Cl容易氯化2气体,以产生苯并[ b ]碲1,1-二氯化物衍生物,但试图锂化是3位是不成功的,并产生了一个环破裂。在三氟乙酸3-氯苯并[ b]中回流时将] tellurophene转化为3-oxo-2,3-dihydrobenzo [ b ] tellurophene。
LOHNER W.; PRAEFCKE K., J. ORGANOMETAL. CHEM., 1980, 194, NO 2, 173-178
作者:LOHNER W.、 PRAEFCKE K.
DOI:——
日期:——
TALBOT J.-M.; PIETTE J.-L.; RENSON M., BULL. SOC. CHIM. BELG., 1980, 89, NO 9, 763-771
作者:TALBOT J.-M.、 PIETTE J.-L.、 RENSON M.
DOI:——
日期:——
DEREU N.; RENSON M., J. ORGANOMETAL. CHEM., 1981, 208, NO 1, 11-21
作者:DEREU N.、 RENSON M.
DOI:——
日期:——
BERGMAN J.; ENGMAN L., J. ORGANOMETAL. CHEM., 1980, 201, NO 2, 377-387