成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List 11,12-Dihydroindolo[2,3-a]carbazole
60511-85-5

11,12-Dihydroindolo[2,3-a]carbazole synthesis

8synthesis methods
1,2-cyclohexanedione (1 g, 8.93 mmol) and phenylhydrazine hydrochloride (3.86 g, 26.78 mmol) were added to the reactor. Nitrogen is flushed into the flask, followed by 20 mL of acetic acid. After stirring and refluxing for 24 hours, the mixture is cooled to room temperature. The reaction mixture is slowly poured into ice water and stirred to precipitate a large amount of yellow solids. It is then filtered, washed with pure water, and dried. After purification, product A was obtained. Yield=95.6%
11,12-DIHYRDOINDOLO[2,3-A]CARBAZOLE
-

Yield:60511-85-5 92.1%

Reaction Conditions:

in decalin; for 0.5 h;Reflux;

Steps:

1 Embodiment 1

To 1L three-mouth flask add decahydronaphthalene in 500 ml, 1, 2 - Cyclohexanedione 22.4g, phenyl hydrazine hydrochloride 57.6g, heating control temperature (190 °C ± 2), 30 minutes later, stopping the reaction, solvent recovery is used the reaction process. Cooling to room temperature, and a large amount of precipitation, filtering, to obtain the powder (1) 11, 12 - indoline and [2,3 - the a] carbazole 47.2g, (yield of 92.1%, HPLC=99.7%).

References:

CN106478635,2017,A Location in patent:Paragraph 0021-0023

11,12-Dihydroindolo[2,3-a]carbazole Related Search: