2-(ethylsulfanyl)benzenecarbaldehyde
chloroacetone
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With calcium oxide In acetone at 59℃; | 100% |
With calcium oxide for 3h; Reflux; |
1-(benzo[b]thiophen-2-yl)ethanol
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With [bis({2‐[bis(propan‐2‐yl)phosphanyl]ethyl})amine](borohydride)(carbonyl)(hydride)iron(II); potassium tert-butylate; acetone In n-heptane at 50℃; for 24h; Schlenk technique; Inert atmosphere; | 98% |
With chromium(VI) oxide; sulfuric acid; water In acetone at 20℃; for 24h; Inert atmosphere; | 94% |
With pyridinium chlorochromate In dichloromethane at 20℃; for 10h; | 78% |
Conditions | Yield |
---|---|
In diethyl ether; water | 95% |
2-(methylsulfanyl)benzaldehyde
chloroacetone
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With magnesium oxide In toluene at 120℃; for 4h; Reagent/catalyst; | 95% |
2,2'-dithiodibenzaldehyde
chloroacetone
acetylacetone
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
Stage #1: 2,2'-dithiodibenzaldehyde; acetylacetone With potassium carbonate; dimethyl sulfoxide at 20℃; for 1.5h; Inert atmosphere; Stage #2: chloroacetone at 50℃; for 1.5h; Inert atmosphere; | 94% |
IMB-05
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With ammonium chloride; zinc In ethanol at 0℃; for 1h; | 93% |
2-chloro-benzaldehyde
1-mercaptopropan-2-one
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With potassium carbonate In water at 90℃; for 2h; Green chemistry; | 84% |
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With copper diacetate; potassium ethyl xanthogenate In dimethyl sulfoxide at 100℃; for 3h; | 84% |
2-(prop-1-en-2-yl)benzo[b]thiophene
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With 1,1'-bis-(diphenylphosphino)ferrocene; oxygen; 2,5-Dimercapto-1,3,4-thiadiazole In acetonitrile at 20 - 80℃; under 760.051 Torr; for 15h; Schlenk technique; | 82% |
2-(hydroxymethyl)thiophenoxyacetone
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With pyridine-SO3 complex; triethylamine In dichloromethane; dimethyl sulfoxide | 79% |
Conditions | Yield |
---|---|
Stage #1: Benzo[b]thiophene With n-butyllithium In diethyl ether; hexane at -78℃; for 1.5h; Reflux; Stage #2: N,N-dimethyl acetamide In diethyl ether; hexane for 2h; Reflux; | 78% |
With n-butyllithium In tetrahydrofuran; hexane at -78 - 22℃; | 35% |
2-(methylsulfanyl)benzaldehyde
chloroacetone
A
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With magnesium hydroxide In neat (no solvent) at 120℃; for 3h; | A 71% B 22.5 %Chromat. |
(E)-4-(2-iodophenyl)but-3-en-2-one
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With copper(l) iodide; potassium sulfide In N,N-dimethyl-formamide at 130℃; for 12h; Schlenk technique; Sealed tube; | 65% |
N-Methoxy-N-methylacetamide
Benzo[b]thiophene
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With n-butyllithium In tetrahydrofuran; hexane at -78 - 22℃; | 62% |
With n-butyllithium In tetrahydrofuran; ethanol; pentane |
2-ethylbenzo[b]thiophene
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With tert.-butylnitrite; N-hydroxyphthalimide; oxygen In benzonitrile at 80℃; under 760.051 Torr; for 24h; Schlenk technique; | 60% |
2,2'-dithiodibenzaldehyde
acetylacetone
A
2-acetyl benzo[b]thiophene
B
2-mercaptobenzaldehyde potassium salt
Conditions | Yield |
---|---|
With potassium carbonate; dimethyl sulfoxide | A 45% B n/a |
Conditions | Yield |
---|---|
Stage #1: benzaldehyde With sulfur; n-butyllithium; N,N',N'-trimethylenediamine In tetrahydrofuran; hexane at -20℃; for 3h; Dehydrogenation; substitution; Stage #2: chloroacetone With potassium carbonate In tetrahydrofuran for 24h; Alkylation; cyclization; | 38% |
methyl ethynyl ketone
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With copper In acetone Ambient temperature; | 37% |
benzothiophen-2-yllithium
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
With lithium acetate |
acetic anhydride
Benzo[b]thiophene
A
2-acetyl benzo[b]thiophene
B
3-acetylbenzothiophene
Conditions | Yield |
---|---|
With boron fluoride ether | |
With trifluoroacetic acid at 20℃; for 1.5h; Friedel-Crafts Acylation; Overall yield = 92 %; Overall yield = 121 mg; |
thiophenol
N,N-dimethyl-formamide
chloroacetone
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
Yield given. Multistep reaction; |
acetyl chloride
Benzo[b]thiophene
A
2-acetyl benzo[b]thiophene
B
3-acetylbenzothiophene
Conditions | Yield |
---|---|
With aluminium trichloride In 1,2-dichloro-ethane Ambient temperature; Yield given. Yields of byproduct given. Title compound not separated from byproducts; | |
Stage #1: acetyl chloride With aluminium trichloride In nitrobenzene at 10℃; for 1h; Stage #2: Benzo[b]thiophene In nitrobenzene for 1h; Friedel-Crafts reaction; Title compound not separated from byproducts; |
ethyl benzo[b]thiophene-2-carboxylate
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 90 percent / t-BuOK / 2 h / Ambient temperature 2: 93 percent / 10percent aq. NH4Cl, Zn / ethanol / 1 h / 0 °C View Scheme |
2-nitro-benzaldehyde
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 94 percent / K2CO3 / dimethylformamide / 1.) 0 deg C, 30 min, 2.) RT, 24 h 2: 90 percent / t-BuOK / 2 h / Ambient temperature 3: 93 percent / 10percent aq. NH4Cl, Zn / ethanol / 1 h / 0 °C View Scheme |
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: tetrahydrofuran / 0.33 h / 0 - 5 °C 2: 79 percent / Et3N, SO3*Py / CH2Cl2; dimethylsulfoxide View Scheme |
Thiosalicylic acid
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 1.) LiAlH4, 2.) EtOAc, H2O / 1a.) THF, 0-5 deg C, 1b.) RT, 1h, 2.) 0-5 deg C, 30 min 2: tetrahydrofuran / 0.33 h / 0 - 5 °C 3: 79 percent / Et3N, SO3*Py / CH2Cl2; dimethylsulfoxide View Scheme |
n-butyllithium
N-Methoxy-N-methylacetamide
Benzo[b]thiophene
2-acetyl benzo[b]thiophene
diethylacetamide
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
In toluene |
Conditions | Yield |
---|---|
In dichloromethane; toluene |
2-acetyl benzo[b]thiophene
1-(benzo[b]thiophen-2-yl)-2-bromoethanone
Conditions | Yield |
---|---|
With tetra-N-butylammonium tribromide In methanol; dichloromethane at 20℃; for 15h; Product distribution / selectivity; | 100% |
With tetrabuthylammonium tribromide In methanol; dichloromethane at 22℃; for 6h; | 95% |
With copper(ll) bromide In methanol; chloroform at 60℃; for 15h; | 89% |
2-acetyl benzo[b]thiophene
(R)-(+)-1-(benzo[b]thiophen-2-yl)ethanol
Conditions | Yield |
---|---|
With borane-THF; (S)-1-methyl-3,3-diphenyl-hexahydropyrrolo[1,2-c][1,3,2]oxazaborole In tetrahydrofuran at 20℃; for 0.666667h; | 100% |
With dimethylsulfide borane complex; (S)-1-methyl-3,3-diphenyl-hexahydropyrrolo[1,2-c][1,3,2]oxazaborole In tetrahydrofuran; toluene at 20℃; for 29.5h; Inert atmosphere; optical yield given as %ee; | 97% |
With C38H38IrN4S2(1+)*F6P(1-); ammonium formate; 3-methyl-5-p-methoxyphenyl-1-hydropyrazole In tetrahydrofuran; water at 40℃; for 9h; enantioselective reaction; | 93% |
2-acetyl benzo[b]thiophene
2,5-dimethoxybenzaldehyde
Conditions | Yield |
---|---|
With pyrrolidine; acetic acid In tetrahydrofuran for 13h; Aldol Condensation; Reflux; Inert atmosphere; | 100% |
2-acetyl benzo[b]thiophene
1-(benzo[b]thiophen-2-yl)ethanol
Conditions | Yield |
---|---|
With sodium tetrahydroborate In ethanol; water for 1.5h; Heating; | 99% |
With methanol; sodium tetrahydroborate In water at 5 - 10℃; for 2h; | 90% |
With sodium tetrahydroborate In methanol at 0℃; for 0.333333h; Reduction; | 87% |
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
In toluene at 20℃; | 98% |
2-acetyl benzo[b]thiophene
phosphonic acid diethyl ester
diethyl 1-hydroxy-1-(benzothiophen-2-yl)ethylphosphonate
Conditions | Yield |
---|---|
With {(μ-η5:η1):η1-2-[(2,6-Me2C6H3)NCH2](C4H3N)YN(SiMe3)2}2 In tetrahydrofuran at 20℃; for 0.333333h; Inert atmosphere; | 97% |
2-acetyl benzo[b]thiophene
1-(1,1-Dioxo-1H-1λ6-benzo[b]thiophen-2-yl)-ethanone
Conditions | Yield |
---|---|
With Oxone In neat (no solvent) for 1.5h; Milling; Green chemistry; chemoselective reaction; | 97% |
2-acetyl benzo[b]thiophene
(S)-(+)-1-(benzo[b]thiophen-2-yl)ethanol
Conditions | Yield |
---|---|
With formic acid; C28H36N3O2RuS; triethylamine at 60℃; for 3h; Inert atmosphere; enantioselective reaction; | 96% |
With baker's yeast; water In methanol at 20℃; | 92% |
2-acetyl benzo[b]thiophene
ethyl acetate
(1R)-1-acetoxy-1-(benzo[b]thiophen-2-yl)ethane
Conditions | Yield |
---|---|
With novozyme 435; dicarbonylhydro[2,5-di(trimethylsilyl)-3,4-butylene-1-hydroxy(η5-cyclopentadienyl)]iron; hydrogen In toluene at 90℃; under 750.075 Torr; Schlenk technique; Enzymatic reaction; enantioselective reaction; | 96% |
2-acetyl benzo[b]thiophene
2-acetylbenzothiophene oxime
Conditions | Yield |
---|---|
With hydroxylamine hydrochloride; sodium acetate In ethanol; water for 4h; Heating; | 95% |
With hydroxylamine hydrochloride; sodium acetate In ethanol; water Reflux; | 94.2% |
With hydroxylamine |
2-acetyl benzo[b]thiophene
1-((methylthio)methyl)-1H-benzo[d][1,2,3]triazole
Conditions | Yield |
---|---|
Stage #1: 1-((methylthio)methyl)-1H-benzo[d][1,2,3]triazole With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Stage #2: 2-acetyl benzo[b]thiophene In tetrahydrofuran; hexane at -78℃; for 1h; | 94% |
2-acetyl benzo[b]thiophene
2-Allyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Conditions | Yield |
---|---|
Stage #1: 2-Allyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane With (S)-2-((2-hydroxy-3-(triphenylsilyl)benzyl)amino)-3-methyl-1-(pyrrolidin-1-yl)butan-1-one; sodium t-butanolate In tetrahydrofuran; methanol; toluene at -30℃; for 0.5h; Inert atmosphere; Stage #2: 2-acetyl benzo[b]thiophene In tetrahydrofuran; methanol; toluene at -30℃; for 8h; Inert atmosphere; enantioselective reaction; | 94% |
Conditions | Yield |
---|---|
With ruthenium trichloride; sodium carbonate; Selectfluor at 120℃; for 6h; Mannich Aminomethylation; | 93% |
2-acetyl benzo[b]thiophene
1-iodocyclohexane
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); 1,3-bis-(diphenylphosphino)propane; caesium carbonate at 110℃; for 36h; Inert atmosphere; Schlenk technique; regioselective reaction; | 92% |
2-acetyl benzo[b]thiophene
ethyl 2-diazo-3-oxo-4,4,4-trifluorobutyrate
Conditions | Yield |
---|---|
With copper hydroxide; 1,8-diazabicyclo[5.4.0]undec-7-ene In tetrahydrofuran at 25℃; for 4h; Glovebox; Inert atmosphere; Sealed tube; regioselective reaction; | 92% |
2-acetyl benzo[b]thiophene
dimethyl sulfoxide
Conditions | Yield |
---|---|
With iodine; sodium nitrite at 90℃; for 12h; | 91% |
2-acetyl benzo[b]thiophene
2-(1-ethenyl-2-propenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
Conditions | Yield |
---|---|
Stage #1: 2-(1-ethenyl-2-propenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane With copper (I) acetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In tetrahydrofuran for 0.166667h; Inert atmosphere; Glovebox; Stage #2: 2-acetyl benzo[b]thiophene In tetrahydrofuran at 20℃; Inert atmosphere; Glovebox; Stage #3: With dihydrogen peroxide; sodium hydroxide In tetrahydrofuran at 0℃; for 3h; Inert atmosphere; stereoselective reaction; | A 90% B n/a |
2-bromo-pyridine
2-acetyl benzo[b]thiophene
Conditions | Yield |
---|---|
Stage #1: 2-bromo-pyridine With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.5h; Inert atmosphere; Stage #2: 2-acetyl benzo[b]thiophene In tetrahydrofuran at -78 - 25℃; for 18h; Inert atmosphere; | 89% |
Conditions | Yield |
---|---|
Stage #1: hydroxylamine; methyl carbamate With sodium hydroxide In water at 5 - 30℃; Stage #2: 2-acetyl benzo[b]thiophene With methanol; sodium tetrahydroborate In tetrahydrofuran; water at 10 - 40℃; Stage #3: With hydrogenchloride; acetic acid at 40 - 45℃; for 3h; | 88% |
2-acetyl benzo[b]thiophene
t-butyldimethylsiyl triflate
Conditions | Yield |
---|---|
Stage #1: 2-acetyl benzo[b]thiophene With triethylamine In dichloromethane at 20 - 25℃; for 1h; Inert atmosphere; Stage #2: t-butyldimethylsiyl triflate In dichloromethane at 20 - 25℃; Inert atmosphere; | 88% |
2-acetyl benzo[b]thiophene
vinyl magnesium bromide
Conditions | Yield |
---|---|
In tetrahydrofuran at 0℃; for 0.0833333h; Inert atmosphere; Sonication; | 85% |
2-acetyl benzo[b]thiophene
ethanol
Conditions | Yield |
---|---|
With diphenyl diselenide; oxygen; toluene-4-sulfonic acid; copper(I) bromide at 130℃; for 9h; Sealed tube; | 85% |
2-acetyl benzo[b]thiophene
toluene
Conditions | Yield |
---|---|
Stage #1: toluene With thianthrene-5-oxide; trifluoromethylsulfonic anhydride In acetonitrile at -20 - 20℃; for 0.666667h; Inert atmosphere; Schlenk technique; Stage #2: 2-acetyl benzo[b]thiophene With palladium diacetate; cesium fluoride; XPhos In N,N-dimethyl-formamide; acetonitrile at 80℃; for 11h; Inert atmosphere; Schlenk technique; | 85% |
The IUPAC name of Ethanone,1-benzo[b]thien-2-yl- is 1-(1-benzothiophen-2-yl)ethanone. With the CAS registry number 22720-75-8, it is also named as 2-Acetylbenzo[b]thiophene. The product's categories are Fluorobenzene; Thiophene & Benzothiophene. Besides, it is white to light yellow crystal powder, which should be stored in sealed container in cool and dry place. In addition, its molecular formula is C10H8OS and molecular weight is 176.23.
The other characteristics of this product can be summarized as: (1)EINECS: 245-177-7; (2)ACD/LogP: 3.83; (3)# of Rule of 5 Violations: 0; (4)ACD/LogD (pH 5.5): 3.83; (5)ACD/LogD (pH 7.4): 3.83; (6)ACD/BCF (pH 5.5): 476.71; (7)ACD/BCF (pH 7.4): 476.71; (8)ACD/KOC (pH 5.5): 2875.41; (9)ACD/KOC (pH 7.4): 2875.41; (10)#H bond acceptors: 1; (11)#H bond donors: 0; (12)#Freely Rotating Bonds: 1; (13)Polar Surface Area: 45.31 Å2; (14)Index of Refraction: 1.646; (15)Molar Refractivity: 52.5 cm3; (16)Molar Volume: 144.5 cm3; (17)Polarizability: 20.81×10-24cm3; (18)Surface Tension: 47.4 dyne/cm; (19)Density: 1.219 g/cm3; (20)Flash Point: 138 °C; (21)Melting Point: 86-88 °C; (22)Enthalpy of Vaporization: 54.49 kJ/mol; (23)Boiling Point: 304.5 °C at 760 mmHg; (24)Vapour Pressure: 0.00087 mmHg at 25 °C.
Preparation of Ethanone,1-benzo[b]thien-2-yl-: this chemical can be prepared by 1-(2-Hydroxymethyl-phenylsulfanyl)-propan-2-one.
This reaction needs Et3N, SO3*Py, CH2Cl2 and Dimethylsulfoxide. The yield is 79 %.
Uses of Ethanone,1-benzo[b]thien-2-yl-: this chemical is a novel anti-osteoporosis agent. It is also used as drug intermediates for the synthesis of zileuton. Furthermore, it can be used to produce 1-Benzo[b]thiophen-2-yl-2-bromo-ethanone.
This reaction needs (n-Bu)4NBr3, CH2Cl2 and Methanol at temperature of 22 °C for 6 hours. The yield is 95 %.
When you are using this chemical, please be cautious about it as the following: it is harmful by inhalation, in contact with skin and if swallowed. You should wear suitable protective clothing when use it.
People can use the following data to convert to the molecule structure.
(1)SMILES: O=C(c2sc1ccccc1c2)C
(2)InChI: InChI=1/C10H8OS/c1-7(11)10-6-8-4-2-3-5-9(8)12-10/h2-6H,1H3
(3)InChIKey: SGSGCQGCVKWRNM-UHFFFAOYAK
(4)Std. InChI: InChI=1S/C10H8OS/c1-7(11)10-6-8-4-2-3-5-9(8)12-10/h2-6H,1H3
(5)Std. InChIKey: SGSGCQGCVKWRNM-UHFFFAOYSA-N
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