Pseudoazulenes. Part IV. The site of protonation in cyclopenta[b]-pyrans
作者:G. V. Boyd、A. W. Ellis
DOI:10.1039/j29660000349
日期:——
that 2-phenylcyclopenta[b]-[l]-benzopyran is protonated solely on C-1 (five-membered ring) an analogous cation is probably formed from 2,4,6-triphenylcyclopenta[b]pyran. The site of protonation in cyclopenta[b]pyran and its derivatives is discussed in terms of molecular orbital theory.
化学位移和可见吸收最大值表明2-苯基环戊[ b ]-[l]-苯并吡喃仅在C-1(五元环)上质子化,类似的阳离子可能由2,4,6-三苯基环戊[ b ]形成吡喃。根据分子轨道理论讨论了环戊[ b ]吡喃及其衍生物的质子化位点。