4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one supplier

: 474416-61-0
bis(2-iodo-3-thienyl)methanone

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
With copper In N,N-dimethyl-formamide Reflux;	99%
With copper In N,N-dimethyl-formamide for 15h; Ullmann reaction; Reflux;	95%
With copper In N,N-dimethyl-formamide for 15h; Ullmann coupling reaction; Heating;	90%

: 1187970-48-4
2,6-bis(trimethylsilyl)-4H-cyclopenta[2,1-b:3,4-b′]dithiophen-4-one

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
With trifluoroacetic acid In chloroform at 20℃; for 1h;	95%

: 156547-71-6
spiro[4H-cyclopenta[2,1-b;3,4-b']-dithiophene-4,2'-[1,3]dioxolan]

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
With hydrogenchloride Hydrolysis;	91%

: 51751-44-1
3,3'dibromo-2,2'-bithiophene

: 79-44-7
N,N-Dimethylcarbamoyl chloride

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Stage #1: 3,3'dibromo-2,2'-bithiophene With n-butyllithium In diethyl ether; hexane at -78℃; for 2h; Inert atmosphere; Stage #2: N,N-Dimethylcarbamoyl chloride In diethyl ether; hexane at -78 - 20℃; Inert atmosphere;	79%
Stage #1: 3,3'dibromo-2,2'-bithiophene With n-butyllithium In diethyl ether at -78℃; for 1h; Inert atmosphere; Stage #2: N,N-Dimethylcarbamoyl chloride In diethyl ether at -78 - 20℃; Inert atmosphere;	76%
Stage #1: 3,3'dibromo-2,2'-bithiophene With n-butyllithium In diethyl ether; hexane at -70℃; for 1h; Inert atmosphere; Stage #2: N,N-Dimethylcarbamoyl chloride In diethyl ether; hexane for 3h; Inert atmosphere;	75.1%
Stage #1: 3,3'dibromo-2,2'-bithiophene With n-butyllithium In diethyl ether at -78℃; for 2h; Stage #2: N,N-Dimethylcarbamoyl chloride In diethyl ether at 20℃;	68%
Stage #1: 3,3'dibromo-2,2'-bithiophene With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 0.5h; Schlenk technique; Inert atmosphere; Stage #2: N,N-Dimethylcarbamoyl chloride In tetrahydrofuran; hexane at -78 - 0℃; for 3h; Schlenk technique; Inert atmosphere;	58%

: 6007-83-6
2,3-thiophenedicarboxylic acid anhydride

A: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

B: 32281-36-0
4,8-dihydrobenzo[1,2-b:4,5-b']dithiophene-4,8-dione

Conditions

Conditions	Yield
at 500℃; under 1 - 5 Torr;	A 1.2% B n/a

: 498-62-4
3-thiophene carboxaldehyde

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 94 percent / PCC / CH2Cl2 / 12 h / 20 °C 2: 90 percent / Cu / dimethylformamide / 15 h / Heating View Scheme
Multi-step reaction with 4 steps 1.1: n-butyllithium / diethyl ether; hexane / 0.5 h / -78 °C 1.2: -78 - 20 °C 2.1: n-butyllithium / diethyl ether; hexane / 0.5 h / -78 °C 2.2: -78 - 20 °C 3.1: pyridinium chlorochromate / dichloromethane / 12 h / 20 °C 4.1: copper / N,N-dimethyl-formamide / 15 h / Reflux View Scheme
Multi-step reaction with 4 steps 1.1: n-butyllithium / diethyl ether / -78 °C 1.2: -78 - 20 °C 2.1: n-butyllithium / diethyl ether / -23 - 20 °C 2.2: -23 - 20 °C 3.1: pyridinium chlorochromate / 1,2-dichloro-ethane / 80 °C 4.1: copper / N,N-dimethyl-formamide / Reflux View Scheme

: 474416-59-6
bis(2-iodothiophen-3-yl)methanol

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 94 percent / PCC / CH2Cl2 / 12 h / 20 °C 2: 90 percent / Cu / dimethylformamide / 15 h / Heating View Scheme
Multi-step reaction with 2 steps 1: pyridinium chlorochromate / dichloromethane / 12 h / 20 °C 2: copper / N,N-dimethyl-formamide / 15 h / Reflux View Scheme
Multi-step reaction with 2 steps 1: pyridinium chlorochromate / 1,2-dichloro-ethane / 80 °C 2: copper / N,N-dimethyl-formamide / Reflux View Scheme
Multi-step reaction with 2 steps 1: pyridinium chlorochromate / dichloromethane / 10 h / 25 °C 2: copper / N,N-dimethyl-formamide / 4 h / 120 °C / Inert atmosphere View Scheme
Multi-step reaction with 2 steps 1: pyridinium chlorochromate / dichloromethane / 10 h / 25 °C 2: copper / N,N-dimethyl-formamide / 4 h / 120 °C / Inert atmosphere View Scheme

: 26453-81-6
di(thiophen-3-yl)methanone

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: 66 percent / TMSOTf / CH2Cl2 / 3 h / 20 °C 2.1: n-BuLi; I2 2.2: 90 percent / Cu / dimethylformamide / 15 h / Heating 3.1: 91 percent / aq. HCl View Scheme

: 19690-72-3
2,2-Di(3-thienyl)-1,3-dioxolane

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: n-BuLi; I2 1.2: 90 percent / Cu / dimethylformamide / 15 h / Heating 2.1: 91 percent / aq. HCl View Scheme

: 1451-95-2
thiophene-2,3-dicarboxylic acid

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 99.7 percent / acetic anhydride / 2 h / Heating 2: 1.2 percent / 500 °C / 1 - 5 Torr View Scheme

: 31936-92-2
1,1-di(thien-3-yl)-methanol

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: n-butyllithium / diethyl ether; hexane / 0.5 h / -78 °C 1.2: -78 - 20 °C 2.1: pyridinium chlorochromate / dichloromethane / 12 h / 20 °C 3.1: copper / N,N-dimethyl-formamide / 15 h / Reflux View Scheme
Multi-step reaction with 3 steps 1.1: n-butyllithium / diethyl ether / -23 - 20 °C 1.2: -23 - 20 °C 2.1: pyridinium chlorochromate / 1,2-dichloro-ethane / 80 °C 3.1: copper / N,N-dimethyl-formamide / Reflux View Scheme

: 19690-69-8
3-bromo-[2,2’]bithiophenyl

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1.1: acetic acid; N-Bromosuccinimide / chloroform / 20 h / 20 - 50 °C 2.1: n-butyllithium / diethyl ether / Inert atmosphere 2.2: Inert atmosphere 3.1: n-butyllithium / hexane; tetrahydrofuran / -60 - -30 °C / Inert atmosphere 3.2: -30 - 0 °C / Inert atmosphere 4.1: trifluoroacetic acid / chloroform / 1 h / 20 °C View Scheme

: 207742-50-5
3,3'-dibromo-5,5'-bis(trimethylsilyl)-2,2'-bithiophene

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: n-butyllithium / hexane; tetrahydrofuran / -60 - -30 °C / Inert atmosphere 1.2: -30 - 0 °C / Inert atmosphere 2.1: trifluoroacetic acid / chloroform / 1 h / 20 °C View Scheme

: 125143-53-5
3,3',5,5'-tetrabromo-2,2'-bithiophene

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: n-butyllithium / diethyl ether / Inert atmosphere 1.2: Inert atmosphere 2.1: n-butyllithium / hexane; tetrahydrofuran / -60 - -30 °C / Inert atmosphere 2.2: -30 - 0 °C / Inert atmosphere 3.1: trifluoroacetic acid / chloroform / 1 h / 20 °C View Scheme
Multi-step reaction with 2 steps 1.1: zinc; acetic acid; hydrogenchloride / ethanol; water / 3 h / 70 °C / Inert atmosphere 2.1: n-butyllithium / diethyl ether; hexane / 1 h / -70 °C / Inert atmosphere 2.2: 3 h / Inert atmosphere View Scheme

: 19783-52-9
[2,2'-bithiophene]-3-carboxylic acid

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: thionyl chloride; N,N-dimethyl-formamide / 12 h / 20 °C / Reflux 2: aluminum (III) chloride / dichloromethane / 4 h / 0 - 20 °C / Inert atmosphere View Scheme
Stage #1: [2,2'-bithiophene]-3-carboxylic acid With thionyl chloride In N,N-dimethyl-formamide for 12h; Reflux; Stage #2: With aluminum (III) chloride In dichloromethane at 0 - 20℃; for 9h;	20.7 mg

: 88-13-1
3-Thiophene carboxylic acid

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; dipotassium hydrogenphosphate; silver(l) oxide / tert-butyl alcohol / 24 h / 130 °C / Schlenk technique; Inert atmosphere 2: thionyl chloride; N,N-dimethyl-formamide / 12 h / 20 °C / Reflux 3: aluminum (III) chloride / dichloromethane / 4 h / 0 - 20 °C / Inert atmosphere View Scheme
Multi-step reaction with 2 steps 1.1: dipotassium hydrogenphosphate; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; silver(l) oxide / tert-butyl alcohol / 24 h / 20 - 130 °C / Inert atmosphere 2.1: thionyl chloride / N,N-dimethyl-formamide / 12 h / Reflux 2.2: 9 h / 0 - 20 °C View Scheme

: C9H5ClOS2

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Conditions

Conditions	Yield
With aluminum (III) chloride In dichloromethane at 0 - 20℃; for 4h; Inert atmosphere;	20.5 mg

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 138519-02-5
dimethyl 4,5-bis(methylthio)-1,3-dithiole phosphonate ester

: 143736-76-9
4-(4,5-Bis-methylsulfanyl-[1,3]dithiol-2-ylidene)-4H-cyclopenta[2,1-b;3,4-b']dithiophene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran	98%
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	98%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: S,S'-(2-(dimethoxyphosphoryl)-1,3-dithiole-4,5-diyl)dihexanethiol

: 143736-84-9
4-(4,5-Bis-hexylsulfanyl-[1,3]dithiol-2-ylidene)-4H-cyclopenta[2,1-b;3,4-b']dithiophene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran	96%
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	96%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 2,6-dibromo-4H-cyclopenta[2,1-b:3,4-b′]dithiophen-4-one

Conditions

Conditions	Yield
With N-Bromosuccinimide; acetic acid at 20℃;	96%
With N-Bromosuccinimide In N,N-dimethyl-formamide at 25℃;	94%
With bromine In dichloromethane at 20℃; for 2h; Inert atmosphere;	87.1%
With N-Bromosuccinimide In N,N-dimethyl-formamide at 20℃; for 0.166667h;
With N-Bromosuccinimide In tetrahydrofuran at 0℃; for 2.25h; Inert atmosphere;	17.3 g

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 109-77-3
malononitrile

: 138050-21-2
4-dicyanomethylene-4H-cyclopenta<2,1-b;3,4-b'>dithiophene

Conditions

Conditions	Yield
With piperidine	93%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 148192-05-6
2-(dimethoxyphosphoryl)-[1,3]dithiole-4,5-dicarboxylic acid dimethyl ester

: 143736-80-5
2-Cyclopenta[2,1-b;3,4-b']dithiophen-4-ylidene-[1,3]dithiole-4,5-dicarboxylic acid dimethyl ester

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	91%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 68-12-2, 33513-42-7
N,N-dimethyl-formamide

: 1376711-77-1
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one-2-carbaldehyde

Conditions

Conditions	Yield
With trichlorophosphate In 1,2-dichloro-ethane at 0 - 80℃; for 6h;	91%
With trichlorophosphate In dichloromethane at 0 - 80℃; for 6h;	91%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 62217-35-0
dimethyl 1,3-benzodithiol-2-ylphosphonate

: 143736-74-7
4-Benzo[1,3]dithiol-2-ylidene-4H-cyclopenta[2,1-b;3,4-b']dithiophene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran	89%
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	89%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 389-58-2
4H-cyclopenta[2,1-b;3,4-b']dithiophene

Conditions

Conditions	Yield
With hydrazine hydrate; potassium hydroxide In ethylene glycol at 180℃;	89%
With hydrazine hydrate; potassium hydroxide In ethylene glycol at 200℃; for 2h; Inert atmosphere;	67%
With potassium hydroxide; hydrazine In ethylene glycol at 190℃; for 13h;	66%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 540-63-6
ethane-1,2-dithiol

: 164727-17-7
C11H8S4

Conditions

Conditions	Yield
With aluminium trichloride In 1,2-dichloro-ethane at 20℃; for 1h;	89%
With aluminum (III) chloride In 1,2-dichloro-ethane at 20℃;
With aluminum (III) chloride In chloroform at 25℃; Inert atmosphere;

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 19690-69-8
3-bromo-[2,2’]bithiophenyl

: 1500083-89-5
4-(2,2’-bithiophen-3-yl)-4-hydroxycyclopenta[2,1-b;3,4-b’]dithiophene

Conditions

Conditions	Yield
Stage #1: 3-bromo-[2,2’]bithiophenyl With n-butyllithium In diethyl ether; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one In diethyl ether; hexane at -78 - 20℃; for 6h; Inert atmosphere;	88%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 1222450-34-1
2,6-di-iodo-cyclopenta[1,t2-b:5,4-b’]dithiophen-4-one

Conditions

Conditions	Yield
With N-iodo-succinimide; trifluoroacetic acid In acetonitrile at 20℃;	88%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 96693-05-9
1-bromo-4-octyloxybenzene

: 4-(4-(octyloxy)phenyl)-4H-cyclopenta[1,2-B:5,4-B']dithiophen-4-ol

Conditions

Conditions	Yield
With magnesium In tetrahydrofuran at 50℃; for 18h; Inert atmosphere;	85%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 2052-07-5
2-Bromobiphenyl

: 350031-83-3
4-(Biphenyl-2-yl)-4-hydroxy-4H-cyclopenta[2,1-b:3,4-b']dithiophene

Conditions

Conditions	Yield
Stage #1: 2-Bromobiphenyl With n-butyllithium In hexane for 1h; Heating; Stage #2: 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one In tetrahydrofuran; hexane at -70℃; for 1h; Further stages.;	83%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: C9H3BrOS2

Conditions

Conditions	Yield
With bromine In dichloromethane at 20℃; for 2h; Inert atmosphere;	82.9%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 156755-16-7
10-(dicyanomethylidene)-9(10H)-anthrone hydrazone

: 2-[10-(cyclopenta[2,1-b;3,4-b']dithiophen-4-ylidene-hydrazono)-10H-anthracen-9-ylidene]-malononitrile

Conditions

Conditions	Yield
With pyridinium p-toluenesulfonate acidic;	80%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: (2-ethylhexyl)triphenylphosphonium bromide

: 1523510-31-7
4-(2′-ethylhexylidene)-4H-cyclopenta[2,1-b:3,4-b′]-dithiophene

Conditions

Conditions	Yield
Stage #1: (2-ethylhexyl)triphenylphosphonium bromide With n-butyllithium In tetrahydrofuran; hexane at -82℃; Inert atmosphere; Stage #2: 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one In tetrahydrofuran; hexane at -82℃; for 0.5h;	79%
Stage #1: (2-ethylhexyl)triphenylphosphonium bromide With n-butyllithium In tetrahydrofuran at -78℃; Inert atmosphere; Stage #2: 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one In tetrahydrofuran; diethyl ether at -78 - 20℃; Inert atmosphere;	77%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: dimethyl [4,5-bis(butylthio)-1,3-dithiol-2-yl]phosphonate

: 143736-82-7
4-(4,5-Bis-butylsulfanyl-[1,3]dithiol-2-ylidene)-4H-cyclopenta[2,1-b;3,4-b']dithiophene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran	78%
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	78%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 3166-13-0
10-hydrazono-9,10-dihydroanthracen-9-one

: 10-(cyclopenta[2,1-b;3,4-b']dithiophen-4-ylidene-hydrazono)-10H-anthracen-9-one

Conditions

Conditions	Yield
With pyridinium p-toluenesulfonate	76%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 100-39-0
benzyl bromide

: C16H10S2

Conditions

Conditions	Yield
Stage #1: benzyl bromide With triphenylphosphine Stage #2: 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one With sodium ethanolate Wittig Olefination;	76%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 42036-78-2
n-octyltriphenylphosphoniumbromide

: 1523510-28-2
4-(octylidene)-4H-cyclopenta[2,1-b:3,4-b′]dithiophene

Conditions

Conditions	Yield
Stage #1: n-octyltriphenylphosphoniumbromide With n-butyllithium In tetrahydrofuran; hexane at -82℃; Inert atmosphere; Stage #2: 4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one In tetrahydrofuran; hexane at -82℃; for 0.5h;	74%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 69212-98-2
2-dimethoxyphosphinyl-4,5-dimethyl-1,3-dithiole

: 143736-78-1
4-(4,5-Dimethyl-[1,3]dithiol-2-ylidene)-4H-cyclopenta[2,1-b;3,4-b']dithiophene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran	71%
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	71%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 51554-93-9
1-bromo-4-octylbenzene

: 4-(4-octylphenyl)-4H-cyclopenta[1,2-B:5,4-B']dithiophen-4-ol

Conditions

Conditions	Yield
With magnesium In tetrahydrofuran at 50℃; for 18h; Inert atmosphere;	70%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: cyclopenta[2,1-b;3,4-b']dithiophen-4-ylidene-hydrazine

Conditions

Conditions	Yield
With pyridinium p-toluenesulfonate; hydrazine	68%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 133113-76-5
dimethyl (1,3-dithiol-2-yl)phosphonate

: 143693-14-5
4-(1,3-Dithiol-2-ylidene)-4H-cyclopenta<2,1-b;3,4-b'>dithiophene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran	65%
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	65%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 155442-43-6
dimethyl 4,5-bis(decylthio)-2H-1,3-dithiol-2-ylphosphonate

: 143736-86-1
4-(4,5-Bis-decylsulfanyl-[1,3]dithiol-2-ylidene)-4H-cyclopenta[2,1-b;3,4-b']dithiophene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran	64%
With n-butyllithium In tetrahydrofuran; hexane 1.) -78 deg C, 15 min; 2.) 20 min;	64%

: 25796-77-4
4H-cyclopenta[2,1-b:3,4-b']dithiophen-4-one

: 2,3,5,6-tetrabromo-4H-cyclopenta[2,1-b:3,4-b’]dithiophen-4-one

Conditions

Conditions	Yield
With bromine In chloroform at 70℃; for 12h;	63%
With bromine In chloroform for 12h; Reflux;	63%

Product Name

4H-Cyclopenta[2,1-b:3,4-b']dithiophen-4-one

Synthetic route

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