午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

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 5,7-Dihydro-indolo[2,3-b]carbazole
111296-90-3

5,7-Dihydro-indolo[2,3-b]carbazole synthesis

8synthesis methods
4′,6′-Dinitro-1,1′:3′,1′′-terphenyl 27.5 g (86 mmol) in a 1 L reactor,57.8 g (348 mmol) of triphenylphosphine,300 mL of dichlorobenzene was added and the mixture was stirred under reflux for 3 days. After completion of the reaction, dichlorobenzene was removed, and the residue was separated by column chromatography to obtain 10.8 g 5,7-Dihydro-indolo[2,3-b]carbazole (Yield 49.0%)
-

Yield:111296-90-3 91.9%

Reaction Conditions:

in diphenylether;decalin for 0.5 h;Reflux;

Steps:

3 Embodiment 3
To 1L three-mouth flask add decahydronaphthalene in 250 ml, diphenyl ether 250 ml, 1, 4 - 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 gray powder (3) 5, 11 - indoline and [3,2 - the b] carbazole 47.1g (yield is 91.9%, HPLC=99.7%).

References:

Xi'an Oude Optoelectric Materials Co., Ltd.;Ren Yingge;Jiang Huzi;Yuan Ting;Liu Yingfeng CN106478635, 2017, A Location in patent:Paragraph 0026; 0027; 0028

FullText

5,7-Dihydro-indolo[2,3-b]carbazole Related Search: