作者:Freek van de Griendt、Hans Cerfontain
DOI:10.1016/0040-4020(80)80021-4
日期:1980.1
1-Methylanthracene (1-MeA), 2-MeA, 1,2-Me2A, 1,3-Me2A, 1,4 Me2A, 2,3-Me2A, 1,4,9-Me3A and 2,3,6,7-Me4A have been protonated with FSO3H in SO2CIF as cosolvent at −78°. With all substrates C(10)- and/or C(9)-protonation was observed. The site of protonation of the hydrocarbons was found to depend on (i) the degree of mesomeric stabilisation of the positive charge of the resulting anthracenium ions by
1-甲基蒽(1-MeA),2-MeA,1,2-Me 2 A,1,3-Me 2 A,1,4 Me 2 A,2,3-Me 2 A,1,4,9- Me 3 A和2,3,6,7-Me 4 A已在-78°下用SO 2 CIF中的FSO 3 H作为助溶剂质子化。对于所有底物,均观察到C(10)-和/或C(9)-质子化。发现碳氢化合物的质子化位点取决于(i)Me取代基对所生成的蒽离子的正电荷的介晶稳定程度,以及(ii)H(9)与H(9)之间的空间应变的减轻。C(9)质子化的位置1处的peri- Me取代基。