Reaction of the indolyl anion of Nb-methoxycarbonyltryptamine (4) with 2-chloro-2-methyl-3-butyne (2) gave the 3a-(1, 1-dimethylpropargyl) pyrrolo [2, 3-b] indole (6) along with the allene derivative (7) and Na-(1, 1-dimethylpropargyl) tryptamine (8). Partial reduction of 6 gave the 3a-(1, 1-dimethylallyl) derivative (10), which rearranged to the 2-(1, 1-dimethylallyl) tryptamine (11) and the Na-(3, 3'-dimethylallyl) tryptamine (12) on acid treatment. On the other hand, acid treatment of 6 gave the 2-(1, 1-dimethylpropargyl) tryptamine (14) in poor yield.
Nb-methoxycarbonyltryptamine (4) 的
吲哚阴离子与 2-chloro-2-methyl-3-butyne (2) 反应,得到 3a-(1, 1-dimethylpropargyl) pyrrolo [2, 3-b] indole (6)、
烯衍
生物 (7) 和 Na-(1, 1-dimethylpropargyl)
色胺 (8)。对 6 进行部分还原可得到 3a-(1, 1-二
甲基烯丙基)衍
生物 (10),经酸处理后可重新排列为 2-(1, 1-二
甲基烯丙基)
色胺 (11) 和 Na-(3, 3'-二
甲基烯丙基)
色胺 (12)。另一方面,酸处理 6 得到的 2-(1, 1-二
甲基丙炔基)
色胺 (14) 收率很低。