ChemicalBook CAS DataBase List 5,7-Dihydro-indolo[2,3-b]carbazole

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

8synthesis methods

Product Name:5,7-Dihydro-indolo[2,3-b]carbazole
CAS Number:111296-90-3
Molecular formula:C18H12N2
Molecular Weight:256.3

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%)

59-88-1 Synthesis

59-88-1
358 suppliers
$15.00/10g

637-88-7 Synthesis

637-88-7
319 suppliers
$5.00/1g

111296-90-3
134 suppliers
$70.00/100 mg

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

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