21064-52-8Relevant academic research and scientific papers
A 10 - bromo - 7H - benzo [c] carbazole preparation method (by machine translation)
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, (2019/10/17)
The invention discloses a 10 - bromo - 7 H - benzo [c] carbazole preparation method, comprises the following raw materials: 2 - naphthol: 260 g; hydrazine hydrate (80%): 520 g; water: 500 g; toluene: 750 ml; concentrated hydrochloric acid: 100 ml; 2 - naphthylhydrazine hydrochloride: 164 g; methanol: 968 ml; cyclohexanone: 91 g; cold methanol: 250 ml; 5, 6, 7, 8 - tetrahydro - 3, 4 - benzo-carbazole: 98.3 g; toluene: 700 ml; DDQ: 201.9 g; ethanol: 200 ml; benzo [c] carbazole: 65.1 g; dichloromethane: 600 ml; NBS: 54 g; toluene: 450 ml; activated carbon: 3 g; four reaction bottle: several, specific reaction steps are: (1). 2 - naphthol and 2 times weight of hydrazine hydrate (80%), reflux reaction 20 h, after processing by the dilute hydrochloric acid, to obtain 2 - naphthylhydrazine hydrochloride. The invention pollution is small, low cost, high yield, use of cheap and easily obtained raw materials, through the four-step reaction, to obtain the target compound, the total yield of products is relatively high; simple process operation, little three-waste discharge, is suitable for the large-scale production. (by machine translation)
Study of synthesis of some pyrroloquinolines, pyrroloisoquinolines, pyridocarbazoles and their derivatives
Fathalipour, Soghra,Shahrokhnia, Nazila,Afghan, Arash,Baradarani, Mehdi M.
body text, p. 5808 - 5814 (2010/12/24)
The new isomers of pyrroloquinolines, pyrroloisoquinolines and pyridocarbazoles have been synthesized from the hydrazone of methylisopropylketone, 2-methylcyclohexanone, 5 and 8-quinolylhydrazine and 5-isoquinolylhydrazine by ring closure in AcOH at reflux in excellent yields. The methiodide of pyrroloisoquinoline and pyridocarbazole were reduced with NaBH4 at room temperature to produce corresponding hexahydropyrroloisoquinoline and decahydropyridoisoquinoline in good yields.
INDOLINE COMPOUND AND METHOD FOR PRODUCING SAME
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Page/Page column 26-27, (2010/11/26)
Disclosed is a novel indoline compound which is useful as an intermediate for pharmaceutical products, agricultural chemicals and various industrial chemicals. For example, this indoline compound is extremely useful as an intermediate for a cyanine compou
