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    • 1. 发明授权
    • Process for the preparation of indoline
    • 二氢吲哚的制备方法
    • US4833255A
    • 1989-05-23
    • US71436
    • 1987-07-09
    • Milos RusekHermann Kny
    • Milos RusekHermann Kny
    • C07D209/08
    • C07D209/08Y02P20/584
    • A process for the preparation of indoline without substantial formation of indole, comprises passing 2-(2-aminophenyl)ethanol, in a vapor phase and admixed with a carrier gas, at a temperature of from about 240.degree. to about 260.degree. C. over at least a catalytic amount of a metal silicate or aluminosilicate containing alkaline earth metal or rare earth metal ions. The carrier gas can be water in the form of steam. The passage of 2-(2-aminophenyl)ethanol over the catalyst can be periodically terminated and the catalyst reactivatd by passing a mixture of air and nitrogen over the catalyst at a temperature of from about 300.degree. to about 550.degree. C., after which the passage of 2-(2-aminophenyl)ethanol and carrier gas can be resumed.
    • 用于制备吲哚啉而不显着形成吲哚的方法包括使气相中的2-(2-氨基苯基)乙醇与载气混合,在约240°至约260℃的温度下 至少催化量的含有碱土金属或稀土金属离子的金属硅酸盐或硅铝酸盐。 载气可以是蒸汽形式的水。 在催化剂上通过2-(2-氨基苯基)乙醇可以定期地终止,并且催化剂通过使空气和氮气的混合物在约300℃至约550℃的温度下在催化剂上通过反应,之后 可以恢复2-(2-氨基苯基)乙醇和载气的通过。