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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5,7-DICARBALDEHYDE

Cas:211235-87-9

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Henan Allgreen Chemical Co.,Ltd

Good quality Good price Promptly delivery Appearance:White or off-white Solid Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:intermediate Transportation:Ac

211235-87-92,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5,7-DICARBALDEHYDE

Cas:211235-87-9

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

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Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5,7-DICARBALDEHYDE

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Ocean Chemical Co., Ltd.

★.Best quality according to requirement ★.Competitive price in China market ★.Mature Technical support ★.Professional logistic support

2,3-Dihydrothieno[3,4-B][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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HANGZHOU TIANYE CHEMICALS CO., LTD.

We product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Application:Chemical intermediate

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Trading Company

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BOC Sciences

We are committed to providing our customers with the best products and services at the most competitive prices.Appearance:white powder Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as primary a

2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5,7-DICARBALDEHYDE

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehydeAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Other

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Asure Biochem CO.,LTD.

*stable and better quality products*efficient and meticulous servicesAppearance:Powder Storage:Store in dry, cool and ventilated place Package:10G/bottle 1kg/tin 5kg/tin 25kg/carton Application:1. Chemical raw materials 2. Used as an analytical reage

2,3-Dihydrothieno[3,4-B][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Zibo Hangyu Biotechnology Development Co., Ltd

home-produced Application:medicine

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

ZHEJIANG JIUZHOU CHEM CO.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Trading Company

inquiry

suzhou BetterBioChem Co., Ltd.

Betterbiochem is specialized in APIs, pharmaceutical intermediates & fine chemicals. 1. The best quality, competitive price. 2. The best service before or after shipment. 3. Rich experience in export operation. 4. Rich experience in

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Chemical Technology Co.,LTD

1. Production capacity: we have three production base with high-tech production equipment and instruments, equipped with professional production personnel, meet your requirements.2. Quality assurance: we have a first-class testing equipment and testi

2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5,7-DICARBALDEHYDE

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Other

inquiry

Finetech Industry Limited

FINETECH INDUSTRY LIMITED is a LONDON based CRO company providing drug discovery & development services to worldwide clients. FINETECH INDUSTRY LIMITED supplies the 2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde, CAS:211235-87-9 with the mos

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Trading Company

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LABTER PARMATECH(BEIJING)CO.,LTD

Hight quality, fast shipping, in stock or custom synthesis for the similar compound to meet your need. Storage:standard ambient conditions Package:1g, 5g, 10g, 25g, 50g,100g,500g,1kg,10kg Application:medical intermediate for R&D Transportation:FEDEX,

2,3-DIHYDROTHIENO[3,4-B][1,4]DIOXINE-5,7-DICARBALDEHYDE

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Wuxi Morality Chemical Co., Ltd

Do best quality products, erect the morality model Application:please email us, thanks

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Other

inquiry

Sino-Biochemical Laboratory Co.,Ltd

High quality ,special structure, regular with stock , custom synthese ,quotation with 24hrsAppearance:Good Storage:G to KG to 100KG Application:With high quality for lab research or production in pharm or special material area . With stock or custom

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Debye Scientific

Debyesci is here who supplied several kinds of chemical products to global pharmaceutical, drug discovery, agrochemical and biotechnology industries for four yearsOur key scientific leadership team has gained experience in top research and developmen

2,3-Dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarbaldehyde

Cas:211235-87-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

3,4-ethylenedioxythiophene-2,5-dicarbonitrile
1269767-35-2

3,4-ethylenedioxythiophene-2,5-dicarbonitrile

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

Conditions
ConditionsYield
With diisobutylaluminium hydride In toluene at 0℃;80%
N,N-dimethyl-formamide
68-12-2, 33513-42-7

N,N-dimethyl-formamide

3,4-(ethylenedioxy)thiophene
126213-50-1

3,4-(ethylenedioxy)thiophene

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

Conditions
ConditionsYield
Stage #1: 3,4-(ethylenedioxy)thiophene With n-butyllithium In tetrahydrofuran at -78 - 0℃; Inert atmosphere;
Stage #2: N,N-dimethyl-formamide In tetrahydrofuran at -78 - 20℃; for 2h; Inert atmosphere;
75%
With n-butyllithium In tetrahydrofuran at -78 - 20℃; Formylation;72%
With n-butyllithium In tetrahydrofuran at -78 - 20℃;62%
With n-butyllithium
Stage #1: 3,4-(ethylenedioxy)thiophene With n-butyllithium In tetrahydrofuran at -78 - 0℃; for 0.333333h; Inert atmosphere;
Stage #2: N,N-dimethyl-formamide In tetrahydrofuran at -78 - 0℃; for 2h; Inert atmosphere;
2,5-di(hydroxymethyl)-3,4-ethylenedioxythiophene
350474-52-1

2,5-di(hydroxymethyl)-3,4-ethylenedioxythiophene

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

Conditions
ConditionsYield
With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In dimethyl sulfoxide at 20℃; for 96h;66%
bromodichloromethane
75-27-4

bromodichloromethane

3,4-(ethylenedioxy)thiophene
126213-50-1

3,4-(ethylenedioxy)thiophene

A

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

B

3,4-ethylenedioxythiophene-2-carboxaldehyde
204905-77-1

3,4-ethylenedioxythiophene-2-carboxaldehyde

Conditions
ConditionsYield
Stage #1: bromodichloromethane; 3,4-(ethylenedioxy)thiophene With 1,1'-bis-(diphenylphosphino)ferrocene; potassium phosphate; palladium diacetate; acetic anhydride; silver carbonate In acetonitrile at 60℃; for 48h; Schlenk technique; Inert atmosphere;
Stage #2: With hydrogenchloride In dichloromethane at 30℃; Overall yield = 66 %;
A 43%
B 22%
N,N-dimethyl-formamide
68-12-2, 33513-42-7

N,N-dimethyl-formamide

3,4-ethylenedioxythiophene-2-carboxaldehyde
204905-77-1

3,4-ethylenedioxythiophene-2-carboxaldehyde

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

Conditions
ConditionsYield
Stage #1: N,N-dimethyl-formamide; 3,4-ethylenedioxythiophene-2-carboxaldehyde With trichlorophosphate In 1,2-dichloro-ethane at 20℃; for 0.5h; Vilsmeier-Haack Formylation;
Stage #2: In 1,2-dichloro-ethane at 80℃; for 5h; Vilsmeier-Haack Formylation;
Stage #3: With hydrogenchloride In water at 20℃; Vilsmeier-Haack Formylation;
21%
N,N-dimethyl-formamide
68-12-2, 33513-42-7

N,N-dimethyl-formamide

3,4-(ethylenedioxy)thiophene
126213-50-1

3,4-(ethylenedioxy)thiophene

A

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

B

3,4-ethylenedioxythiophene-2-carboxaldehyde
204905-77-1

3,4-ethylenedioxythiophene-2-carboxaldehyde

Conditions
ConditionsYield
With n-butyllithium; potassium tert-butylate; lithium bromide 1.) THF, hexane, -90 deg C, 30 min, 2.) -90 deg c to room temperature; Yield given; Multistep reaction. Yields of byproduct given;
potassium 2,5-dicyanothiophene-3,4-bis(olate)

potassium 2,5-dicyanothiophene-3,4-bis(olate)

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium carbonate; tetrabutylammomium bromide / N,N-dimethyl-formamide / 135 °C / Inert atmosphere
2: diisobutylaluminium hydride / toluene / 0 °C
View Scheme
3,4-(ethylenedioxy)thiophene
126213-50-1

3,4-(ethylenedioxy)thiophene

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: trichlorophosphate / 1,2-dichloro-ethane / 5 h / 80 °C
2.1: trichlorophosphate / 1,2-dichloro-ethane / 0.5 h / 20 °C
2.2: 5 h / 80 °C
2.3: 20 °C
View Scheme
1-Methyl-1-phenylhydrazine
618-40-6

1-Methyl-1-phenylhydrazine

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

3,4-ethylenedioxythiophene-2,5-dicarbaldehyde di(N-methyl-N-phenylhydrazone)
1141893-87-9

3,4-ethylenedioxythiophene-2,5-dicarbaldehyde di(N-methyl-N-phenylhydrazone)

Conditions
ConditionsYield
In ethanol Reflux;85%
N,N-diphenylhydrazine hydrochloride
530-47-2

N,N-diphenylhydrazine hydrochloride

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

3,4-ethylenedioxythiophene-2,5-dicarbaldehyde di(N,N-diphenylhydrazone)
1141893-88-0

3,4-ethylenedioxythiophene-2,5-dicarbaldehyde di(N,N-diphenylhydrazone)

Conditions
ConditionsYield
In ethanol Reflux;79%
5,10,15-trihexyl-10,15-dihydro-5H-diindolo[3,2-a:3’,2’-c]carbazole-2-amine

5,10,15-trihexyl-10,15-dihydro-5H-diindolo[3,2-a:3’,2’-c]carbazole-2-amine

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C92H106N8O2S

C92H106N8O2S

Conditions
ConditionsYield
With toluene-4-sulfonic acid In chloroform; isopropyl alcohol for 24h; Inert atmosphere; Reflux;77%
4,4’-dimethoxy-4’’-aminotriphenylamine

4,4’-dimethoxy-4’’-aminotriphenylamine

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C48H42N4O6S

C48H42N4O6S

Conditions
ConditionsYield
With toluene-4-sulfonic acid In chloroform for 72h; Reflux; Inert atmosphere;75%
2-thienylmethyltriphenylphosphonium bromide
23259-98-5

2-thienylmethyltriphenylphosphonium bromide

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2,2'-dithienyl-ω,ω'-2,5-(2,4-ethylenedioxy)divinyl thiophene

2,2'-dithienyl-ω,ω'-2,5-(2,4-ethylenedioxy)divinyl thiophene

Conditions
ConditionsYield
With sodium hydride In tetrahydrofuran at 20℃; for 10h; Condensation; Wittig;74%
methyl (3,4,5-trimethoxyphenyl) ketone
1136-86-3

methyl (3,4,5-trimethoxyphenyl) ketone

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

(2E,2’E)-3,3’-(2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis[1-(3,4,5-trimethoxyphenyl)prop-2-en-1-one]

(2E,2’E)-3,3’-(2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis[1-(3,4,5-trimethoxyphenyl)prop-2-en-1-one]

Conditions
ConditionsYield
With sodium hydroxide In ethanol; water for 1h; Reflux;74%
2,5-diamino-thiophene-3,4-dicarboxylic acid diethyl ester
80691-81-2

2,5-diamino-thiophene-3,4-dicarboxylic acid diethyl ester

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

tetraethyl 5,5'-(1E,10E)-(2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(methan-1-yl-1-ylidene)bis(azan-1-yl-1-ylidene)-bis(2-aminothiophene-3,4-dicarboxylate)
1239898-58-8

tetraethyl 5,5'-(1E,10E)-(2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(methan-1-yl-1-ylidene)bis(azan-1-yl-1-ylidene)-bis(2-aminothiophene-3,4-dicarboxylate)

Conditions
ConditionsYield
With trifluoroacetic acid In ethanol at 20℃; for 16h;67%
2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

diethyl (5-hexylthiophen-2-yl)methylphosphonate
609369-55-3

diethyl (5-hexylthiophen-2-yl)methylphosphonate

(E,E)-2,5-bis[2-(5-hexyl-2-thienyl)-1-ethenyl]-3,4-ethylenedioxythiophene

(E,E)-2,5-bis[2-(5-hexyl-2-thienyl)-1-ethenyl]-3,4-ethylenedioxythiophene

Conditions
ConditionsYield
With potassium tert-butylate In tetrahydrofuran at 20℃; for 1h; Wittig-Horner reaction;53%
3-cyano-2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene
4651-91-6

3-cyano-2-amino-4,5,6,7-tetrahydrobenzo[b]thiophene

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2,2'-(((1E,1'E)-(2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(methanylylidene))bis(azanylylidene))bis(4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbonitrile)

2,2'-(((1E,1'E)-(2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(methanylylidene))bis(azanylylidene))bis(4,5,6,7-tetrahydrobenzo[b]thiophene-3-carbonitrile)

Conditions
ConditionsYield
With trifluoroacetic acid In ethanol at 40℃; for 16h;52%
4-(N-isopropylamidino)-1,2-phenylene diamine
148344-30-3

4-(N-isopropylamidino)-1,2-phenylene diamine

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2,5-bis[(5-(N-isopropylamidino)benzimidazo-2-yl)]-3,4-ethylenedioxythiophene dihydrochloride

2,5-bis[(5-(N-isopropylamidino)benzimidazo-2-yl)]-3,4-ethylenedioxythiophene dihydrochloride

Conditions
ConditionsYield
Stage #1: 4-(N-isopropylamidino)-1,2-phenylene diamine; 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde With p-benzoquinone In ethanol for 4h; Reflux; Inert atmosphere;
Stage #2: With hydrogenchloride In ethanol
50.7%
2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C11H20O3PS2(1-)

C11H20O3PS2(1-)

2,5-bis<4,5-bis(n-propyl)-2H-1,3-dithiol-2-ylidenemethyl>-3,4-ethylenedioxythiophene

2,5-bis<4,5-bis(n-propyl)-2H-1,3-dithiol-2-ylidenemethyl>-3,4-ethylenedioxythiophene

Conditions
ConditionsYield
50%
2-(3,4-diaminophenyl)-imidazoline
66639-63-2

2-(3,4-diaminophenyl)-imidazoline

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2,5-bis[5-(3,4-dihydroimidazol-2-yl)benzimidazol-2-yl]-3,4-ethylenedioxythiophene dihydrochloride

2,5-bis[5-(3,4-dihydroimidazol-2-yl)benzimidazol-2-yl]-3,4-ethylenedioxythiophene dihydrochloride

Conditions
ConditionsYield
Stage #1: 2-(3,4-diaminophenyl)-imidazoline; 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde With p-benzoquinone In ethanol for 4h; Reflux; Inert atmosphere;
Stage #2: With hydrogenchloride In ethanol
47.9%
4-amidino-1,2-phenylenediamine
68827-43-0

4-amidino-1,2-phenylenediamine

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2,5-bis[(5-amidinobenzimidazo-2-yl)]-3,4-ethylenedioxythiophene dihydrochloride

2,5-bis[(5-amidinobenzimidazo-2-yl)]-3,4-ethylenedioxythiophene dihydrochloride

Conditions
ConditionsYield
Stage #1: 4-amidino-1,2-phenylenediamine; 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde With p-benzoquinone In ethanol for 4h; Reflux; Inert atmosphere;
Stage #2: With hydrogenchloride In ethanol
42.6%
2-(Triphenyl-λ5-phosphanylidene)-[1,3]dithiole-4,5-dicarboxylic acid dimethyl ester
88430-82-4

2-(Triphenyl-λ5-phosphanylidene)-[1,3]dithiole-4,5-dicarboxylic acid dimethyl ester

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2,5-bis<4,5-bis(methoxycarbonyl)-2H-1,3-dithiol-2-ylidenemethyl>-3,4-ethylenedioxythiophene

2,5-bis<4,5-bis(methoxycarbonyl)-2H-1,3-dithiol-2-ylidenemethyl>-3,4-ethylenedioxythiophene

Conditions
ConditionsYield
40%
diethyl (3-hexylthiophen-2-yl)-methylphosphonate

diethyl (3-hexylthiophen-2-yl)-methylphosphonate

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C30H38O2S3

C30H38O2S3

Conditions
ConditionsYield
With potassium tert-butylate In tetrahydrofuran at -78℃; for 2h; Inert atmosphere;36%
1-(4-(2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl)phenyl)ethanone

1-(4-(2,3-dihydrothieno[3,4-b][1,4]dioxin-7-yl)phenyl)ethanone

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C36H26O8S3

C36H26O8S3

Conditions
ConditionsYield
With potassium hydroxide In ethanol for 12h; Claisen-Schmidt Condensation;34%
C7H12O3PS4(1-)

C7H12O3PS4(1-)

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2,5-bis<4,5-bis(methylsulfanyl)-2H-1,3-dithiol-2-ylidenemethyl>-3,4-ethylenedioxythiophene

2,5-bis<4,5-bis(methylsulfanyl)-2H-1,3-dithiol-2-ylidenemethyl>-3,4-ethylenedioxythiophene

Conditions
ConditionsYield
27%
diethyl (3,4-ethylenedioxy-5-hexyl-2-thienyl)methylphosphonate

diethyl (3,4-ethylenedioxy-5-hexyl-2-thienyl)methylphosphonate

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C34H42O6S3

C34H42O6S3

Conditions
ConditionsYield
Stage #1: diethyl (3,4-ethylenedioxy-5-hexyl-2-thienyl)methylphosphonate With sodium hydride In N,N-dimethyl-formamide at 0℃; for 0.25h; Inert atmosphere;
Stage #2: 2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde In N,N-dimethyl-formamide at 20℃; for 18h; Horner-Wadsworth-Emmons Olefination; Inert atmosphere;
26%
1,3-bis(dicyanomethylidene)-indane
38172-19-9

1,3-bis(dicyanomethylidene)-indane

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

2-{2-[7-(1,3-Bis-dicyanomethylene-indan-2-ylidenemethyl)-2,3-dihydro-thieno[3,4-b][1,4]dioxin-5-ylmethylene]-3-dicyanomethylene-indan-1-ylidene}-malononitrile

2-{2-[7-(1,3-Bis-dicyanomethylene-indan-2-ylidenemethyl)-2,3-dihydro-thieno[3,4-b][1,4]dioxin-5-ylmethylene]-3-dicyanomethylene-indan-1-ylidene}-malononitrile

2,5-diamino-thiophene-3,4-dicarboxylic acid diethyl ester
80691-81-2

2,5-diamino-thiophene-3,4-dicarboxylic acid diethyl ester

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C28H30N4O10S3
1245748-31-5

C28H30N4O10S3

Conditions
ConditionsYield
In ethanol Acidic conditions;
diethyl 2-amino-5-benzamidothiophene-3,4-dicarboxylate
1586816-08-1

diethyl 2-amino-5-benzamidothiophene-3,4-dicarboxylate

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

tetraethyl-5,5'-((1E,1'E)-((2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(methanylylidene))bis(azanylylidene))bis(2-benzamidothiophene-3,4-dicarboxylate)
1586816-06-9

tetraethyl-5,5'-((1E,1'E)-((2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-diyl)bis(methanylylidene))bis(azanylylidene))bis(2-benzamidothiophene-3,4-dicarboxylate)

Conditions
ConditionsYield
With trifluoroacetic acid In ethanol at 20℃; Inert atmosphere;
C17H19NO3
347895-10-7

C17H19NO3

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C42H40N2O8S

C42H40N2O8S

Conditions
ConditionsYield
With acetic acid In ethanol for 4h; Reflux; Inert atmosphere;
4-aminophenyl 4-(hexyloxy)benzoate
65388-44-5

4-aminophenyl 4-(hexyloxy)benzoate

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C46H48N2O8S

C46H48N2O8S

Conditions
ConditionsYield
With acetic acid In ethanol for 4h; Reflux; Inert atmosphere;
4-aminophenyl 4-octyloxybenzoate
163856-08-4

4-aminophenyl 4-octyloxybenzoate

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde
211235-87-9

2,3-dihydrothieno[3,4-b][1,4]dioxine-5,7-dicarboxaldehyde

C50H56N2O8S

C50H56N2O8S

Conditions
ConditionsYield
With acetic acid In ethanol for 4h; Reflux; Inert atmosphere;

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