Dayangchem's 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. DayangChem can provide different quantities
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inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
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inquiryAnsciep 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
Thiochroman-4-one Application:Organic Chemicals
We are a trading company aiming at providing high-quality services to customers. Established for many years, with good reputation in the industry Storage:Sealed and preserved Application:Fine chemical intermediates, used as the main raw material for
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inquiryThiochroman-4-one CAS NO.3528-17-4 Application:Thiochroman-4-one CAS NO.3528-17-4
Supply top quality products with a reasonable price Application:api
Thiochroman-4-one cas 3528-17-4Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Best quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Thiochroman-4-one CAS NO.3528-17-4Appearance:off-white fine crystalline powder Storage:Dry and ventilated Package:Standard or as customer's require Application:intermediates Transportation:By express (Door to door) such as FEDEX, DHL, EMS for small a
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Type:Lab/Research institutions
inquiryStable supply of goods and provision of high-quality services Application:As raw materials in the field of medicine and biology
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Min.Order:0
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Type:Trading Company
inquiryGood Quality Application:Medical or chemical
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Best Seller, High Quality, Competitive Price, Fast Delivery, Quick ResponseAppearance:powder, or liquid Storage:Stored in room temperature, ventilated place Package:Bottle, barrel, cargo, container, etc. Application:Pharmaceuticals, intermediates, AP
thiochroman-4-ol
2,3-dihydro-4H-[1]benzothiopyran-4-one
Conditions | Yield |
---|---|
With dimethyl sulfoxide; triethylamine In dichloromethane at -40 - 20℃; for 8h; | 93% |
With 1-hydroxy-3H-benz[d][1,2]iodoxole-1,3-dione In dimethyl sulfoxide for 24h; Ambient temperature; | 92% |
With ammonium nitrate; hydrogenchloride; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; oxygen In water; acetonitrile at 60℃; for 18h; Green chemistry; | 85% |
thiochroman-4-one semicarbazone
2,3-dihydro-4H-[1]benzothiopyran-4-one
Conditions | Yield |
---|---|
With potassium permanganate; silica gel In water at 20℃; for 0.416667h; | 91% |
Conditions | Yield |
---|---|
With PPA for 0.0166667h; microwave irradiation; | 80% |
With sulfuric acid at 110℃; for 4h; | 80% |
With PPA at 60℃; for 96h; | 66% |
4-(trimethylsilyloxy)thiochrom-3-ene
cyclohexanone
A
2,3-dihydro-4H-[1]benzothiopyran-4-one
B
3-cyclohexylidene-4-thiochromanone
Conditions | Yield |
---|---|
With titanium tetrachloride In dichloromethane 1.) -78 deg C; 2.) 25 deg C, 18 h; | A 63% B 32% |
4-(trimethylsilyloxy)thiochrom-3-ene
cyclopentanone
A
2,3-dihydro-4H-[1]benzothiopyran-4-one
B
thiochromen-4-one
C
3-cyclopentylidene-4-thiochromanone
Conditions | Yield |
---|---|
With titanium tetrachloride In dichloromethane 1.) -78 deg C; 2.) 25 deg C, 18 h; | A 24% B 20% C 22% |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 86 percent / 0.06 h / microwave irradiation 2: 80 percent / polyphosphoric acid / 0.02 h / microwave irradiation View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: ethanol / Heating 2: various solvent(s) / 1 h / 100 °C / Heating View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: NaOH-solution 2: concentrated sulfuric acid / 20 °C View Scheme | |
Multi-step reaction with 2 steps 1: NaOH-solution 2: concentrated sulfuric acid / 60 °C View Scheme | |
Multi-step reaction with 2 steps 1: ethanol; water / 2 h / Reflux 2: sulfuric acid / 0 - 20 °C View Scheme |
Conditions | Yield |
---|---|
With sodium hydroxide |
ethyl 3-(phenylthio)propionate
2,3-dihydro-4H-[1]benzothiopyran-4-one
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium hydroxide / methanol; water / Reflux 2: polyphosphoric acid / 100 °C View Scheme |
2-(phenylthio)acetaldehyde
2,3-dihydro-4H-[1]benzothiopyran-4-one
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: zinc; iodine / diethyl ether; benzene / 20 °C / Inert atmosphere 1.2: 24 h / Inert atmosphere 2.1: sodium hydroxide / methanol; water / Reflux 3.1: polyphosphoric acid / 100 °C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: polyphosphoric acid / 100 °C 2.1: zinc; iodine / diethyl ether; benzene / 20 °C / Inert atmosphere 2.2: 24 h / Inert atmosphere 3.1: sodium hydroxide / methanol; water / Reflux 4.1: polyphosphoric acid / 100 °C View Scheme |
2,3-dihydro-4H-[1]benzothiopyran-4-one
4-methyl-benzaldehyde
(Z)-3-(4-methylbenzylidene)thiochroman-4-one
Conditions | Yield |
---|---|
With hydrogenchloride In methanol for 3h; | 100% |
With sulfuric acid In acetic acid at 20℃; for 0.333333h; | 89% |
With hydrogenchloride In ethanol for 0.0833333h; Ambient temperature; | 64.1% |
With piperidine In chloroform for 5h; Reflux; | |
With sodium hydroxide In ethanol; water at 0℃; for 0.5h; |
2,3-dihydro-4H-[1]benzothiopyran-4-one
benzaldehyde
Z-3-benzylidene-1-thiochromanone
Conditions | Yield |
---|---|
With hydrogenchloride In methanol for 3h; | 100% |
With hydrogenchloride In ethanol | 79.6% |
With piperidine In chloroform for 5h; Reflux; | |
With sodium hydroxide In ethanol; water at 0℃; for 0.5h; |
2,3-dihydro-4H-[1]benzothiopyran-4-one
oxalic acid diethyl ester
3-ethoxalyl-2,3-dihydro-1-benzothiopyran-4-one
Conditions | Yield |
---|---|
With sodium ethanolate In ethanol at 40℃; for 2h; | 100% |
With sodium In ethanol Claisen Condensation; |
2,3-dihydro-4H-[1]benzothiopyran-4-one
1-thiochroman-4-one 1-oxide
Conditions | Yield |
---|---|
With water; silica gel; magnesium monoperoxyphthalate hexahydrate In dichloromethane at 40℃; for 1h; | 100% |
With phthaloyl peroxide In dichloromethane at 25℃; for 8h; Schlenk technique; chemoselective reaction; | 99% |
With sodium bromate; ammonium cerium(IV) nitrate; silica gel In dichloromethane at 20℃; for 0.566667h; | 96% |
Conditions | Yield |
---|---|
With methanol; lithium hydride In benzene Reflux; Inert atmosphere; | 100% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
(R)-3,4-dihydro-2H-thiochromen-4-ol
Conditions | Yield |
---|---|
With bis(1,5-cyclooctadiene)diiridium(I) dichloride; C49H64FeNOP; hydrogen; sodium t-butanolate In isopropyl alcohol at 25 - 30℃; under 38002.6 Torr; for 12h; Autoclave; enantioselective reaction; | 99% |
With (S)-2-[(1,3,2-dioxaborolan-2-yloxy)diphenylmethyl]pyrrolidine; dimethylsulfide borane complex In tetrahydrofuran at 25℃; for 2h; Inert atmosphere; optical yield given as %ee; enantioselective reaction; | 92% |
With [ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2; sodium formate In water at 30℃; for 24h; Inert atmosphere; Schlenk technique; enantioselective reaction; | 79% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
1,1-dioxo-1-thiochroman-4-one
Conditions | Yield |
---|---|
With dihydrogen peroxide In acetonitrile at 40℃; for 0.333333h; | 99% |
With 3,3-dimethyldioxirane In dichloromethane; acetone at 0 - 5℃; | 96% |
With silica gel; magnesium monoperoxyphthalate hexahydrate In dichloromethane for 1.41667h; Heating; | 84% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
(S)-3,4-dihydro-2H-thiochromen-4-ol
Conditions | Yield |
---|---|
With formic acid; [RuCl2(hexamethylbenzene)]2; (S)-2-piperidinemethanethiol hydrochloride; triethylamine at 30℃; for 24h; Inert atmosphere; optical yield given as %ee; enantioselective reaction; | 99% |
With Cp*Ir(OTf)(Msdpen); hydrogen In methanol at 60℃; under 11400.8 Torr; for 24h; optical yield given as %ee; enantioselective reaction; | 99% |
With formic acid; [RuCl2(hexamethylbenzene)]2; (S)-2-piperidinemethanethiol hydrochloride; triethylamine at 30℃; for 24h; Inert atmosphere; optical yield given as %ee; enantioselective reaction; | 99% |
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate In dichloromethane at 20℃; Inert atmosphere; | 99% |
Conditions | Yield |
---|---|
With hydrogenchloride; mercury dichloride; zinc In toluene for 72h; Heating; | 98% |
With hydrogenchloride; amalgamated zinc In toluene for 72h; Heating; | 98% |
With molybdenum trisulfide; hydrogen In octane at 240℃; under 75006 Torr; for 1.5h; | 95% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
thiochroman-4-ol
Conditions | Yield |
---|---|
With sodium tetrahydroborate In ethanol at 20℃; Inert atmosphere; | 98% |
With methanol; sodium tetrahydroborate at 0 - 20℃; for 0.666667h; Inert atmosphere; | 84% |
With potassium hydroxide; Cr(L-Ala)2 In water; N,N-dimethyl-formamide for 18h; Ambient temperature; pH=9.9; | 74% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
potassium cyanide
ammonium carbonate
spiro(hydantoin-5,4'-thiochromane)
Conditions | Yield |
---|---|
In ethanol; water at 55 - 60℃; Bucherer-Bergs reaction; | 98% |
chloro-trimethyl-silane
2,3-dihydro-4H-[1]benzothiopyran-4-one
4-(trimethylsilyloxy)thiochrom-3-ene
Conditions | Yield |
---|---|
With triethylamine; potassium iodide In chloroform 1.) chloroform, 0 deg C; 2.) reflux, 16 h; | 97% |
With triethylamine; potassium iodide In chloroform for 16h; Heating; | 94% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
phenylhydrazine
6,11-Dihydro-5-thia-11-aza-benzo[a]fluorene
Conditions | Yield |
---|---|
With chloro-trimethyl-silane In ethanol for 4h; Reflux; | 96% |
With chloro-trimethyl-silane In ethanol for 4h; Reflux; | 72% |
(i) AcOH, (ii) HCl; Multistep reaction; | |
With hydrogenchloride In 1,4-dioxane; ethanol for 4h; Fischer indole reaction; Heating; |
Conditions | Yield |
---|---|
Stage #1: ethyl trifluoroacetate, With sodium hydride In tetrahydrofuran at 20℃; for 0.5h; Stage #2: 2,3-dihydro-4H-[1]benzothiopyran-4-one In tetrahydrofuran for 2h; Reflux; | 96% |
With sodium methylate In methanol; diethyl ether for 16h; |
2,3-dihydro-4H-[1]benzothiopyran-4-one
manganese triacetate
4-oxo-3,4-dihydro-2H-thiochromen-3-yl acetate
Conditions | Yield |
---|---|
With acetic acid In benzene for 5h; Heating; | 96% |
In benzene Heating; | 89% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
thiochroman-4-one oxime
Conditions | Yield |
---|---|
With pyridine; hydroxylamine hydrochloride at 20℃; for 1.5h; | 96% |
With hydroxylamine hydrochloride; sodium acetate In methanol at 20℃; for 12h; | 90% |
With pyridine; hydroxylamine hydrochloride at 20℃; for 3h; | 87% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
benzaldehyde
toluene-4-sulfonamide
Conditions | Yield |
---|---|
With N,N,N',N'-tetramethylguanidine In toluene at 20℃; for 5h; Mannich reaction; Molecular sieve; optical yield given as %de; diastereoselective reaction; | 96% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
formic acid ethyl ester
3-(hydroxymethylene)thiochroman-4-one
Conditions | Yield |
---|---|
With sodium hydride In toluene | 95% |
With sodium methylate In pyridine for 18h; Ambient temperature; |
Conditions | Yield |
---|---|
With acetic acid In ethanol for 3h; Condensation; Heating; | 95% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
A
1-thiochroman-4-one 1-oxide
B
1,1-dioxo-1-thiochroman-4-one
Conditions | Yield |
---|---|
With 3,3-dimethyldioxirane In dichloromethane; acetone at 0 - 5℃; | A 93% B 4.8% |
With dihydrogen peroxide; titanium(IV) isopropylate; L-Tartaric acid; silica gel In methanol; water at 25℃; for 24h; Title compound not separated from byproducts; | A 92 % Spectr. B 3% |
With sodium periodate Yield given. Yields of byproduct given; |
Conditions | Yield |
---|---|
With acetic acid In ethanol for 3h; Condensation; Heating; | 93% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
benzaldehyde
thiourea
4-phenyl-(5H)-(1-benzthiopyrano)-(4,3-d)-1,2,3,4-tetrahydropyrimidine-2-thione
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium hydrogen sulfate at 70℃; for 1h; Reagent/catalyst; Temperature; Green chemistry; | 92% |
With hydrogenchloride In butan-1-ol Heating; | 53.23% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
ethylhydrazine carboxylate
thiochroman-4-one ethoxy carbonylhydrazone
Conditions | Yield |
---|---|
With acetic acid In ethanol for 3h; Heating; | 92% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
benzaldehyde
thiourea
4-chlorobenzoylmethyl bromide
Conditions | Yield |
---|---|
Stage #1: 2,3-dihydro-4H-[1]benzothiopyran-4-one; benzaldehyde; thiourea at 80℃; for 0.333333h; Ionic liquid; Stage #2: 4-chlorobenzoylmethyl bromide at 80℃; for 1h; Ionic liquid; | 92% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
benzaldehyde
thiourea
4-(bromoacetyl)toluene
Conditions | Yield |
---|---|
Stage #1: 2,3-dihydro-4H-[1]benzothiopyran-4-one; benzaldehyde; thiourea at 80℃; for 0.333333h; Ionic liquid; Stage #2: 4-(bromoacetyl)toluene at 80℃; for 1h; Ionic liquid; | 92% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
4-methyl-benzaldehyde
thiourea
para-bromophenacyl bromide
Conditions | Yield |
---|---|
Stage #1: 2,3-dihydro-4H-[1]benzothiopyran-4-one; 4-methyl-benzaldehyde; thiourea at 80℃; for 0.333333h; Ionic liquid; Stage #2: para-bromophenacyl bromide at 80℃; for 1h; Ionic liquid; | 92% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
4-chlorobenzaldehyde
4-Nitrophenacyl bromide
thiourea
Conditions | Yield |
---|---|
Stage #1: 2,3-dihydro-4H-[1]benzothiopyran-4-one; 4-chlorobenzaldehyde; thiourea at 80℃; for 0.333333h; Ionic liquid; Stage #2: 4-Nitrophenacyl bromide at 80℃; for 1h; Ionic liquid; | 92% |
2,3-dihydro-4H-[1]benzothiopyran-4-one
4-methoxy-benzaldehyde
thiourea
4-(4-methoxyphenyl)-3,4-dihydro-1H-thiochromeno[4,3-d]pyrimidine-2(5H)-thione
Conditions | Yield |
---|---|
With 1-butyl-3-methylimidazolium hydrogen sulfate at 70℃; for 1h; Green chemistry; | 92% |
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