作者:H. Taniguchi、I.M. Mathai、S.I. Miller
DOI:10.1016/0040-4020(66)80058-3
日期:1966.1
to 1,5-diphenyl-1,4-pentadiyne have now been shown to give 1,4-diphenylbutadiyne. Spectral properties, NMR, IR, UV, are given for both series. Shoolery's rule is found useful in predicting the chemical shift, τ(CH2),for these and other kinds of acetylenic compounds. On the basis of their UV spectra, one can say that in the 1,4-diynes there is little, if any, conjugation “through” the internal methylene
通过将炔基格氏试剂与炔丙基溴偶联来制备“跳过的”(1,4-)二炔。用碱进行的异构化将1,4-生成共轭的1,3-二炔。现已证明有两种据称的通往1,5-二苯基-1,4-戊二炔的途径可产生1,4-二苯基丁二炔。给出了两个系列的光谱性质,NMR,IR,UV。发现Shoolery法则对于预测这些和其他种类的炔属化合物的化学位移τ(CH 2)很有用。根据它们的紫外线光谱,可以说在1,4-二炔中,“通过”内部亚甲基的共轭很少,如果有的话,其共轭比1,3-二炔少。二炔。