As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch
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inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W
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inquiry1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized
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inquiry1,4-Benzodioxan CAS:493-09-4 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediat
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
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inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
superior quality Appearance:CLEAR COLOURLESS TO VERY SLIGHTLY YELLOW LIQUID Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Used as Pharmaceutical
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inquiryAppearance:colorless to light yellow liquid Storage:Sealed in dry,Room Temperature Application:Benzo-1,4-dioxane (2,3-dihydro-1,4-benzodioxin) is used in the synthesis of stereoisomers which were evaluated as α- and β- adrenergic antagonis
Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
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inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
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
The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
Massive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and
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inquiryZibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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inquiryProduct Name: 1,4-Benzodioxan Synonyms: 1,2-Ethylenedioxybenzene, 1,4-Benzodioxan, 2,3-Dihydro-1,4-benzodioxin;1,4-Benzodioxan,99%;(R)-1-(2-hydroxynaphthalen-1-yl)naphthalen-2-ol;2,3-dihydrobenzo[b][1,4]dioxine 2,3-dihydro-1,4-benzodio
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inquiryGMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
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Cas:493-09-4
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inquiryWe Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O
Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W
1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer
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inquiryWe are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp
Conditions | Yield |
---|---|
With 1,4-diaza-bicyclo[2.2.2]octane for 3h; Reflux; | 97% |
With 1,4-diaza-bicyclo[2.2.2]octane; carbonic acid dimethyl ester at 90℃; for 2h; Reagent/catalyst; Time; | 92% |
With phosphorus pentoxide | |
Multi-step reaction with 2 steps 1: pyridine; PBr3 2: aqueous alkaline solution View Scheme |
Conditions | Yield |
---|---|
With sodium hydroxide; (C16H33CH3)2NCH2CH2N(CH3)2C16H33)(2+)*Br(1-)*Br(1-) In water Heating; | 89% |
With sodium hydroxide; (C16H33N(CH3)2CH2CH=CHCH2(CH3)2NC16H33)(2+)*Br(1-)*Br(1-) In water Heating; | 84% |
With potassium carbonate In ethylene glycol; ethyl acetate Reflux; | 81% |
2-(2-bromophenoxy)ethan-1-ol
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With palladium diacetate; 9-di(2-tert-butylphosphinophenyl)phenanthrene; caesium carbonate In toluene at 70℃; for 40h; | 88% |
With palladium diacetate; caesium carbonate; 2'-(di-tert-butylphosphanyl)-N,N-dimethyl-[1,1'-biphenyl]-2-amine In toluene at 70℃; for 40h; | 88% |
With (4,4′-di-tert-butyl-2,2′-dipyridyl)Ni(o-tolyl)(Br); 1,8-diazabicyclo[5.4.0]undec-7-ene In toluene at 80℃; for 24h; Inert atmosphere; Sealed tube; UV-irradiation; | 86% |
[1,3]-dioxolan-2-one
benzene-1,2-diol
A
benzo-1,4-dioxane
B
2,2'-(1,2-phenylenedioxy)diethanol
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride In N,N-dimethyl-formamide at 170℃; for 1h; Inert atmosphere; Schlenk technique; | A 5% B 84% |
6-bromo-1,4-benzodioxane
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With tetrabutylammonium tetrafluoroborate; triethylamine In tetrahydrofuran; acetonitrile at 20℃; for 4.4h; Inert atmosphere; Electrolysis; | 83% |
With isopropyl alcohol for 20h; Schlenk technique; Inert atmosphere; Irradiation; Heating; | 65% |
Conditions | Yield |
---|---|
Stage #1: benzene-1,2-diol With caesium carbonate In dichloromethane at 20℃; for 0.166667h; Inert atmosphere; Stage #2: (vinylselenonyl)benzene In dichloromethane at 0 - 20℃; for 24h; Reagent/catalyst; Temperature; Time; Inert atmosphere; | 80% |
Conditions | Yield |
---|---|
With chlorobis(cyclooctene)-iridium(I) dimer; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; lithium chloride In water; 1,3,5-trimethyl-benzene at 170℃; for 60h; Schlenk technique; Inert atmosphere; | 79% |
With bis(1,5-cyclooctadiene)diiridium(I) dichloride; 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; lithium chloride In water; 1,3,5-trimethyl-benzene for 60h; Reflux; | 79% |
Conditions | Yield |
---|---|
With caesium carbonate; triphenylphosphine; palladium dichloride In toluene at 50℃; for 24h; | 65% |
Conditions | Yield |
---|---|
With caesium carbonate; triphenylphosphine; palladium dichloride In toluene at 50℃; for 24h; | 63% |
Conditions | Yield |
---|---|
With sodium hydroxide In dimethyl sulfoxide | 57% |
With sodium hydroxide In N,N-dimethyl-formamide at 90℃; | 2.1 g |
With sodium hydroxide In dimethyl sulfoxide at 80 - 85℃; for 5.45h; | 115 g |
2-fluorophenol
2-chloro-ethanol
A
benzo-1,4-dioxane
B
2-hydroxyphenyl 2-chloroethyl ether
Conditions | Yield |
---|---|
With <(η-C6H6)Rh(η-C5EtMe4)>(2+)*2 In nitromethane at 80℃; for 48h; Title compound not separated from byproducts; | A 50% B 10 % Chromat. |
2-Phenoxyethanol
A
benzo-1,4-dioxane
B
6-iodo-1,4-benzodioxane
C
2-(4-iodophenoxy)ethanol
Conditions | Yield |
---|---|
With [bis(acetoxy)iodo]benzene; iodine In 1,2-dichloro-ethane at 60 - 70℃; Irradiation; | A 39% B 12% C n/a |
With [bis(acetoxy)iodo]benzene; iodine In 1,2-dichloro-ethane at 60 - 70℃; Irradiation; | A 6% B 22% C n/a |
Conditions | Yield |
---|---|
With [bis(acetoxy)iodo]benzene; iodine In 1,2-dichloro-ethane at 60 - 70℃; for 2h; Irradiation; | A 39% B 12% |
With [bis(acetoxy)iodo]benzene; iodine In 1,2-dichloro-ethane at 60 - 70℃; for 2h; Irradiation; | A 6% B 22% |
Conditions | Yield |
---|---|
(η5-ethyltetramethylcyclopentadienyl)(η6-benzene)rhodium(III) tetrafluoroborate In nitromethane; acetone at 80℃; for 312h; | 35% |
2-(2-bromo-ethoxy)-phenol
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With alkaline solution | |
With potassium hydroxide In water; dimethyl sulfoxide at 25℃; | 92 % Spectr. |
With potassium hydroxide In water; dimethyl sulfoxide at 25℃; Rate constant; | 92 % Spectr. |
1-(benzyloxy)-2-(2-bromoethoxy)benzene
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With hydrogenchloride; ethanol |
oxirane
phenylium
A
1-benzofurane
B
2,3-Dihydrobenzofuran
C
benzo-1,4-dioxane
D
vinyl phenyl ether
Conditions | Yield |
---|---|
With oxygen; trimethylamine under 244 Torr; for 8760h; Ambient temperature; dark; | A 4 % Chromat. B 15 % Chromat. C 3 % Chromat. D 78 % Chromat. |
With oxygen; trimethylamine under 244 Torr; for 8760h; Product distribution; Mechanism; Ambient temperature; arylation of various cyclic ethers in the dark and effects of base; | A 4 % Chromat. B 15 % Chromat. C 3 % Chromat. D 78 % Chromat. |
oxirane
phenylium
A
1-benzofurane
B
2,3-Dihydrobenzofuran
C
benzo-1,4-dioxane
D
phenol
Conditions | Yield |
---|---|
With oxygen under 34 Torr; for 8760h; Ambient temperature; dark; | A 2 % Chromat. B 21 % Chromat. C 61 % Chromat. D 15 % Chromat. |
oxirane
phenylium
A
1-benzofurane
B
2,3-Dihydrobenzofuran
C
benzo-1,4-dioxane
D
vinyl phenyl ether
E
phenol
Conditions | Yield |
---|---|
With oxygen under 34 Torr; for 8760h; Product distribution; Mechanism; Ambient temperature; arylation of various cyclic ethers in the dark; | A 2 % Chromat. B 21 % Chromat. C 61 % Chromat. D 1 % Chromat. E 15 % Chromat. |
oxirane
phenylium
A
2,3-Dihydrobenzofuran
B
benzo-1,4-dioxane
C
phenol
Conditions | Yield |
---|---|
With oxygen under 224 Torr; for 8760h; Ambient temperature; dark; | A 37 % Chromat. B 33 % Chromat. C 30 % Chromat. |
Conditions | Yield |
---|---|
With bis(benzonitrile)palladium(II) dichloride In benzene Heating; | 50 % Chromat. |
Conditions | Yield |
---|---|
With <(η-C6H6)Rh(η-C5EtMe4)>(2+)*2; triethylamine 1) CH3NO2, 80 deg C, 2 d, 2) room temperature, 24 h; Yield given. Multistep reaction. Title compound not separated from byproducts; |
1,10-Dimethyl-2,9,11,12,13-pentaoxa-tricyclo[8.2.1.03,8]trideca-3,5,7-triene
benzo-1,4-dioxane
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: CH2Cl2 / 1 h / -78 °C / Irradiation 2: potassium carbonate / ethane-1,2-diol / 4 h / 120 °C View Scheme |
2,9,11,12,13-Pentaoxa-tricyclo[8.2.1.03,8]trideca-3,5,7-triene
benzo-1,4-dioxane
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 51 percent / CH2Cl2 / 1 h / -78 °C / Irradiation 2: potassium carbonate / ethane-1,2-diol / 4 h / 120 °C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: aqueous NaOH 2: phosphorus (V)-oxide View Scheme | |
Multi-step reaction with 3 steps 1: sodium ethylate; ethanol 2: pyridine; PBr3 3: aqueous alkaline solution View Scheme |
2,3-dibromo-2,3-dihydro-benzo[1,4]dioxin
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With sodium iodide In acetone for 2h; Heating / reflux; |
2-(2-hydroxy-phenoxy)-ethanol
carbonic acid dimethyl ester
A
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With 1,4-diaza-bicyclo[2.2.2]octane at 90℃; for 24h; | A 10 %Chromat. B 90 %Chromat. |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetonitrile / 150 °C / Autoclave 2: 1,4-diaza-bicyclo[2.2.2]octane / 3 h / Reflux View Scheme |
benzo-1,4-dioxane
6-bromo-1,4-benzodioxane
Conditions | Yield |
---|---|
With N-Bromosuccinimide In N,N-dimethyl-formamide at 20℃; | 100% |
With N-Bromosuccinimide In N,N-dimethyl-formamide at 20℃; for 24h; | 100% |
With N-Bromosuccinimide In DMF (N,N-dimethyl-formamide) at 0 - 20℃; for 24h; | 100% |
Conditions | Yield |
---|---|
With sulfuric acid; sodium perchlorate In chloroform Heating; or KClO4; | 100% |
benzo-1,4-dioxane
tert-butyl alcohol
6-tert-Butyl-2,3-dihydro-benzo[1,4]dioxine
Conditions | Yield |
---|---|
With sulfuric acid; sodium perchlorate In chloroform Heating; or KClO4; | 100% |
benzo-1,4-dioxane
2-bromo-5-iodobenzoyl chloride
(2-bromo-5-iodophenyl)-(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methanone
Conditions | Yield |
---|---|
With aluminum (III) chloride In dichloromethane at 20℃; for 3h; Temperature; | 100% |
With aluminum (III) chloride In dichloromethane at -5 - 20℃; for 4h; Inert atmosphere; | 90% |
In dichloromethane at 0 - 20℃; |
2-chloro-5-iodobenzoylchloride
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With aluminum (III) chloride In dichloromethane at 20℃; for 16h; | 98.7% |
benzo-1,4-dioxane
2,3-dihydro-benzo[1,4]dioxin-6-sulfonic acid
Conditions | Yield |
---|---|
With sulfur trioxide In 1,4-dioxane-d8 at 15℃; for 0.25h; other time; other temp; other reagent: cc H2SO4; | 98% |
With sulfuric acid at 125℃; |
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With sulfur trioxide In nitromethane at 10℃; for 0.25h; other reagent; | 98% |
benzo-1,4-dioxane
5-bromo-2-methylbenzoyl chloride
Conditions | Yield |
---|---|
With aluminum (III) chloride In dichloromethane at 20℃; Inert atmosphere; | 96% |
With aluminum (III) chloride In dichloromethane at 0 - 20℃; for 12h; | 95% |
benzo-1,4-dioxane
phenyl isothiocyanate
2-(2,3-dihydrobenzo[b][1,4]dioxin-2-yl)benzo[d]thiazole
Conditions | Yield |
---|---|
With di-tert-butyl peroxide; copper diacetate In acetonitrile at 120℃; for 6h; Inert atmosphere; | 94% |
Conditions | Yield |
---|---|
With aluminum (III) chloride In dichloromethane at -10 - 20℃; for 1.5h; | 93.1% |
benzo-1,4-dioxane
benzoyl chloride
2,3-dihydro-1,4-benzodioxin-6-yl(phenyl)methanone
Conditions | Yield |
---|---|
With aluminium trichloride In nitrobenzene at 5℃; for 6h; | 92.9% |
With aluminium trichloride In 1,2-dichloro-ethane at 20℃; for 10h; | 88% |
With aluminium trichloride In dichloromethane at 0℃; for 1h; | 85% |
With aluminium trichloride In dichloromethane at 15℃; for 1h; | |
With aluminium trichloride In benzene at 55 - 60℃; for 2.5h; Friedel-Crafts reaction; |
Conditions | Yield |
---|---|
92% | |
With aluminium trichloride In carbon disulfide for 10h; Ambient temperature; | 91% |
With aluminium trichloride In benzene at 55 - 60℃; for 2.5h; Friedel-Crafts reaction; |
benzo-1,4-dioxane
tertiary butyl chloride
6-tert-Butyl-2,3-dihydro-benzo[1,4]dioxine
Conditions | Yield |
---|---|
With aluminum (III) chloride In dichloromethane at -10 - 20℃; for 1.5h; | 91.2% |
benzo-1,4-dioxane
6,7-dibromo-2,3-dihydrobenzo[b][1,4]dioxine
Conditions | Yield |
---|---|
With bromine In dichloromethane at 20℃; | 90% |
With bromine In dichloromethane at 20℃; Inert atmosphere; | 83% |
With iodine pentoxide; potassium bromide In water at 20℃; for 23h; regioselective reaction; | 78% |
benzo-1,4-dioxane
4-fluorobenzoyl chloride
(2,3-Dihydro-benzo[1,4]dioxin-6-yl)-(4-fluoro-phenyl)-methanone
Conditions | Yield |
---|---|
With aluminium trichloride In dichloromethane at 15℃; for 1h; | 90% |
benzo-1,4-dioxane
4-chlorobenzoyl chloride
(4-Bromo-phenyl)-(2,3-dihydro-benzo[1,4]dioxin-6-yl)-methanone
Conditions | Yield |
---|---|
With aluminium trichloride In dichloromethane at 15℃; for 1h; | 90% |
Conditions | Yield |
---|---|
With C19H16*C24BF20; C23H40NScSi2 In chlorobenzene at 70℃; for 2h; stereoselective reaction; | 90% |
benzo-1,4-dioxane
3,4,5-Trimethoxybenzoyl chloride
6-(3,4,5-trimethoxybenzoyl)-2,3-dihydro-1,4-benzodioxin
Conditions | Yield |
---|---|
With tin(IV) chloride In dichloromethane for 24h; Ambient temperature; | 88% |
benzo-1,4-dioxane
Conditions | Yield |
---|---|
With disulfur dichloride; acetic acid at 20℃; for 120h; Inert atmosphere; Schlenk technique; Glovebox; | 88% |
With disulfur dichloride In acetic acid for 18h; | 52% |
Stage #1: benzo-1,4-dioxane With disulfur dichloride In acetic acid at 20℃; for 48h; Stage #2: With tin(ll) chloride In methanol; acetic acid | |
With disulfur dichloride; acetic acid at 20℃; Inert atmosphere; Schlenk technique; | 2.45 g |
Conditions | Yield |
---|---|
With aluminum (III) chloride In dichloromethane at -10 - 20℃; for 1.5h; | 87.5% |
benzo-1,4-dioxane
6-nitro-2,3-dihydrobenzo[b][1,4]dioxine
Conditions | Yield |
---|---|
With nitric acid at 60℃; | 87% |
With tert.-butylnitrite In acetonitrile at 20℃; for 1h; | 80% |
With nitric acid In water at 20 - 80℃; for 6h; | 76.7% |
Conditions | Yield |
---|---|
With (C5H5)Y(CH2C6H4NMe2-o)2; trityl tetrakis(pentafluorophenyl)borate In toluene at 70℃; for 24h; Inert atmosphere; Glovebox; regioselective reaction; | 87% |
Conditions | Yield |
---|---|
Stage #1: benzo-1,4-dioxane; formaldehyd With acetic acid at 0℃; for 0.5h; Inert atmosphere; Stage #2: With hydrogen bromide; acetic acid at 0 - 20℃; Inert atmosphere; | 87% |
benzo-1,4-dioxane
6-iodo-1,4-benzodioxane
Conditions | Yield |
---|---|
With Iron(III) nitrate nonahydrate; carbon dioxide; iodine; oxygen In ethylene glycol at 100℃; under 5250.53 - 9000.9 Torr; for 10h; Autoclave; Green chemistry; regioselective reaction; | 86% |
With iodine; periodic acid In ethanol for 0.75h; Heating; | 73% |
Conditions | Yield |
---|---|
With manganese(III) triacetate dihydrate In acetic acid at 60℃; for 5h; | 85% |
Conditions | Yield |
---|---|
With Amberlyst-15 In neat (no solvent) at 60℃; for 0.666667h; Friedel-Crafts Alkylation; Green chemistry; | 85% |
benzo-1,4-dioxane
hydrocinnamic acid chloride
1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-phenylpropan-1-one
Conditions | Yield |
---|---|
With aluminium trichloride In dichloromethane at 30℃; for 1h; | 84% |
With aluminium trichloride In dichloromethane at 15 - 20℃; for 3h; | 78% |
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