中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 1,4,5,8,9-pentamethylcarbazole | 121091-20-1 | C17H19N | 237.345 |
3-(1,4,7-三甲基吲哚-3-基)丙酸 | 3-(1,4,7-trimethyl-1H-indol-3-yl)propionic acid | 839685-13-1 | C14H17NO2 | 231.294 |
A range of compounds with methyl groups disposed ortho and peri on heteroaromatic frameworks have been prepared, and T1 values and methyl-methyl Overhauser effects measured for them. Most of the n.O.e . Values were ≤6%, but two examples of methyls flanked by two others exhibited values of 9% (6-hydroxy-4,4,5,7-tetramethyl-3,4-dihydro-2H-benzopyran-2-one) and 15% (1,4,5,8,9-pentamethylcarbazole).