Product Name

  • Name

    7-Bromo-1-tetralone

  • EINECS
  • CAS No. 32281-97-3
  • Article Data40
  • CAS DataBase
  • Density 1.511 g/cm3
  • Solubility
  • Melting Point 78 °C
  • Formula C10H9BrO
  • Boiling Point 311.9 °C at 760 mmHg
  • Molecular Weight 225.085
  • Flash Point 103.5 °C
  • Transport Information
  • Appearance Yellow solid
  • Safety 26-36/37/39
  • Risk Codes 36/37/38
  • Molecular Structure Molecular Structure of 32281-97-3 (7-Bromo-1-tetralone)
  • Hazard Symbols IrritantXi
  • Synonyms 7-Bromo-1,2,3,4-Tetrahydronaphthalen-1-one;7-Bromo-3,4-dihydro-1(2H)-naphthalenone;7-Bromo-3,4-dihydro-2H-naphthalen-1-one;NSC 74917;
  • PSA 17.07000
  • LogP 2.96810

Synthetic route

4-(4-bromophenyl)butanoic acid
35656-89-4

4-(4-bromophenyl)butanoic acid

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
With PPA at 90℃; for 0.25h;100%
With PPA at 90℃; for 2h;95%
With phosphorus pentoxide In toluene at 110℃; for 2h; Temperature; Time;95%
7-bromo-1,2,3,4-tetrahydronaphthalen-1-ol
75693-15-1

7-bromo-1,2,3,4-tetrahydronaphthalen-1-ol

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
With acetic acid; 1,1'-(phenyl-l3-iodanediyl)bis(pyridinium)trifluoromethanesulfonate In 1,2-dichloro-ethane at 60℃; for 1.5h; Inert atmosphere; Molecular sieve; chemoselective reaction;95%
With pivalaldehyde In toluene at 40℃; for 0.5h; Flow reactor;90%
4-(4-bromophenyl)-butyryl chloride
6628-03-1

4-(4-bromophenyl)-butyryl chloride

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
With Fe-Al-MCM-41 molecular sieve In toluene at 60℃; for 18h; Green chemistry;84%
With carbon disulfide; aluminium trichloride at 0℃;
3,4-dihydronaphthalene-1(2H)-one
529-34-0

3,4-dihydronaphthalene-1(2H)-one

A

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

B

5-bromo-1-tetralone
68449-30-9

5-bromo-1-tetralone

Conditions
ConditionsYield
With bromine; aluminum (III) chloride at 80℃;A 42%
B 51%
With aluminum (III) chloride; bromine at 75 - 80℃; for 0.55h;A 42%
B 51%
Stage #1: 3,4-dihydronaphthalene-1(2H)-one With aluminum (III) chloride at 75 - 80℃; for 0.216667h;
Stage #2: With bromine for 0.333333h;
A 42%
B 51%
3,4-dihydronaphthalene-1(2H)-one
529-34-0

3,4-dihydronaphthalene-1(2H)-one

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Stage #1: 3,4-dihydronaphthalene-1(2H)-one; aluminum (III) chloride at 0 - 90℃; for 0.916667h;
Stage #2: With bromine at 90℃; for 1h;
40%
With bromine; aluminum (III) chloride
3,4-dihydronaphthalene-1(2H)-one
529-34-0

3,4-dihydronaphthalene-1(2H)-one

A

Reaxys ID: 11943741

Reaxys ID: 11943741

B

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

C

5-bromo-1-tetralone
68449-30-9

5-bromo-1-tetralone

Conditions
ConditionsYield
Stage #1: 3,4-dihydronaphthalene-1(2H)-one With aluminum (III) chloride Under N2;
Stage #2: With bromine at 80℃; for 0.0833333h;
A 20.9%
B 35.8%
C 28.3%
bromobenzene
108-86-1

bromobenzene

(hexacarbonyl)chromium

(hexacarbonyl)chromium

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 85 percent / aluminum chloride / 1,2-dichloro-benzene / 6 h / 83 °C
2: 82 percent / KOH; hydrazine monohydrate / triethylene glycol / 90 - 200 °C
3: 75 percent / polyphosphoric acid / 1 h / 80 °C
View Scheme
4-(4-bromophenyl)-4-oxo-butyric acid
6340-79-0

4-(4-bromophenyl)-4-oxo-butyric acid

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 82 percent / KOH; hydrazine monohydrate / triethylene glycol / 90 - 200 °C
2: 75 percent / polyphosphoric acid / 1 h / 80 °C
View Scheme
Multi-step reaction with 2 steps
1: 90 percent / potassium hydroxide; hydrazine / triethylene glycol / 2 h / Heating
2: 83 percent / polyphosphoric acid / 0.33 h / 90 °C
View Scheme
Multi-step reaction with 2 steps
1: 98 percent / KOH; H2NNH2 / triethylene glycol / 2 h / 200 °C
2: 95 percent / polyphosphoric acid / 2 h / 90 °C
View Scheme
4-(4-bromophenyl)-3-butenoic acid

4-(4-bromophenyl)-3-butenoic acid

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrogen / Pd/C / tetrahydrofuran / 3 h / 20 °C / 760.21 Torr
2: P2O5; methanesulfonic acid / 12 h / 20 °C
View Scheme
C22H35BrO2Sn

C22H35BrO2Sn

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: hydrochloric acid / H2O / 0.25 h / 20 °C
2: hydrogen / Pd/C / tetrahydrofuran / 3 h / 20 °C / 760.21 Torr
3: P2O5; methanesulfonic acid / 12 h / 20 °C
View Scheme
bromobenzene
108-86-1

bromobenzene

Mg

Mg

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 85 percent / AlCl3 / 1,2-dichloro-benzene / 7 h / 95 °C
2: 98 percent / KOH; H2NNH2 / triethylene glycol / 2 h / 200 °C
3: 95 percent / polyphosphoric acid / 2 h / 90 °C
View Scheme
bromobenzene
108-86-1

bromobenzene

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 69 percent / AlCl3 / cyclohexane / 0.25 h / Heating
2: 94 percent / Clemmensen procedure
3: 100 percent / PPA / 0.25 h / 90 °C
View Scheme
Multi-step reaction with 4 steps
1: aluminium chloride
2: amalgamated zinc; aqueous hydrochloric acid; toluene / weiteres Reagens: Essigsaeure
3: thionyl chloride
4: AlCl3; carbon disulfide / 0 °C
View Scheme
Multi-step reaction with 3 steps
1.1: aluminum (III) chloride / nitrobenzene / 0.5 h / 20 °C
1.2: 60 °C
2.1: palladium 10% on activated carbon; hydrogen / acetic acid / 70 °C
3.1: polyphosphoric acid / 90 °C
View Scheme
bromobenzene
108-86-1

bromobenzene

potassium biphenylolate-(4)

potassium biphenylolate-(4)

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: AlCl3
2: Zn-Hg, aq. HCl
3: polyphosphoric acid
View Scheme
Multi-step reaction with 3 steps
1: AlCl3
2: N2H4, KOH / bis-(2-hydroxy-ethyl) ether
3: polyphosphoric acid
View Scheme
4-(3-bromophenyl)-butyric acid
899350-32-4

4-(3-bromophenyl)-butyric acid

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
With polyphosphoric acid at 90℃;
4-(3-bromophenyl)-4-oxo-butyric acid
62903-13-3

4-(3-bromophenyl)-4-oxo-butyric acid

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: palladium 10% on activated carbon; hydrogen / acetic acid / 70 °C
2: polyphosphoric acid / 90 °C
View Scheme
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

7-bromo-1,2,3,4-tetrahydronaphthalen-1-ol
75693-15-1

7-bromo-1,2,3,4-tetrahydronaphthalen-1-ol

Conditions
ConditionsYield
With sodium tetrahydroborate In methanol; dichloromethane at 20 - 23℃; for 1h;100%
With methanol; sodium tetrahydroborate In dichloromethane at 20℃; for 1h;100%
With methanol; sodium tetrahydroborate at 20℃;92%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

7-bromo-N-hydroxy-3,4-dihydronaphthalen-1(2H)-imine
877263-91-7

7-bromo-N-hydroxy-3,4-dihydronaphthalen-1(2H)-imine

Conditions
ConditionsYield
With hydroxylamine hydrochloride; sodium acetate In ethanol for 2h; Heating / reflux;100%
With hydroxylamine hydrochloride; sodium acetate In ethanol; water at 80℃; for 0.75h;95%
With hydroxylamine hydrochloride; sodium acetate In ethanol at 80℃; for 2h;93%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

methyl iodide
74-88-4

methyl iodide

7-bromo-2,2-dimethyl-3,4-dihydronaphthalen-1(2H)-one
148925-37-5

7-bromo-2,2-dimethyl-3,4-dihydronaphthalen-1(2H)-one

Conditions
ConditionsYield
In benzene100%
Stage #1: 7-bromo-3,4-dihydro-2H-naphthalen-1-one With potassium tert-butylate In tetrahydrofuran for 6h; Reflux;
Stage #2: methyl iodide at 20 - 50℃; for 3.25h;
95%
With sodium hydride In benzene Heating;90%
Stage #1: 7-bromo-3,4-dihydro-2H-naphthalen-1-one With sodium hydride In tetrahydrofuran for 1h; Cooling with ice;
Stage #2: methyl iodide In tetrahydrofuran at 20℃; for 16h;
86%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

C10H11BrN2
1260541-32-9

C10H11BrN2

Conditions
ConditionsYield
With hydrazine hydrate In ethanol for 2h; Reflux;100%
With hydrazine hydrate; triethylamine In water at 95℃; for 1h;
With hydrazine hydrate In methanol at 80℃; for 3h; Sealed tube; Inert atmosphere; Schlenk technique;
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

carbonic acid dimethyl ester
616-38-6

carbonic acid dimethyl ester

7-Brom-2-methoxycarbonyl-1-tetralon

7-Brom-2-methoxycarbonyl-1-tetralon

Conditions
ConditionsYield
With sodium hydride In methanol; toluene at 90℃; for 2h;100%
With potassium tert-butylate; sodium hydride at 0℃; Inert atmosphere;
With sodium hydride In mineral oil for 12h; Reflux;
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

1,7-dibromo-1,2,3,4-tetrahydronaphthalene

1,7-dibromo-1,2,3,4-tetrahydronaphthalene

Conditions
ConditionsYield
Stage #1: 7-bromo-3,4-dihydro-2H-naphthalen-1-one With sodium tetrahydroborate; ethanol at 20℃;
Stage #2: With phosphorus tribromide In dichloromethane at 0 - 20℃;
100%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

ethylene glycol
107-21-1

ethylene glycol

7-Bromo-1,2,3,4-tetrahydronaphthalene-1-spiro-2'-(1',3'-dioxacyclopentane)
111773-13-8

7-Bromo-1,2,3,4-tetrahydronaphthalene-1-spiro-2'-(1',3'-dioxacyclopentane)

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene at 105℃; for 48h;99%
With toluene-4-sulfonic acid In benzene for 24h; Heating / reflux; Dean-Stark apparatus;99%
With toluene-4-sulfonic acid In toluene for 12h; Heating;92%
With VO(OTf)2*5H2O In benzene for 12h; Reflux;83%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

7-bromo-1,2,3,4-tetrahydronaphthalen-1-ol
676133-23-6

7-bromo-1,2,3,4-tetrahydronaphthalen-1-ol

Conditions
ConditionsYield
With dimethylsulfide borane complex; (S)-1-methyl-3,3-diphenyl-hexahydropyrrolo[1,2-c][1,3,2]oxazaborole In tetrahydrofuran; toluene at -25 - -15℃; for 6.3h; 4A molecular sieves;98%
Stage #1: 7-bromo-3,4-dihydro-2H-naphthalen-1-one; dimethylsulfide borane complex; (S)-1-methyl-3,3-diphenyl-hexahydropyrrolo[1,2-c][1,3,2]oxazaborole In tetrahydrofuran; toluene at -25 - -15℃; for 1.33333h;
Stage #2: With methanol In tetrahydrofuran; toluene at -20 - 20℃; for 16h;
98%
With hydrogen; C43H45ClN4Ru; sodium t-butanolate In isopropyl alcohol at 22℃; under 7500.75 Torr; for 24h; Autoclave; enantioselective reaction;98%
2,2,2-trifluoroethyl acrylate
407-47-6

2,2,2-trifluoroethyl acrylate

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

C15H12BrF3O3

C15H12BrF3O3

Conditions
ConditionsYield
With silver hexafluoroantimonate; dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer; copper(II) acetate monohydrate In tert-Amyl alcohol at 20 - 100℃; for 12.33h; Schlenk technique; Sealed tube; regioselective reaction;98%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

benzaldehyde N-boc imine
150884-50-7

benzaldehyde N-boc imine

tert-butyl ((S)-((R)-7-bromo-1-oxo-1,2,3,4-tetrahydronaphthalen-2-yl)(phenyl)methyl)carbamate

tert-butyl ((S)-((R)-7-bromo-1-oxo-1,2,3,4-tetrahydronaphthalen-2-yl)(phenyl)methyl)carbamate

Conditions
ConditionsYield
With 1,2,2,6,6-pentamethylpiperidine; C62H26B2F26 In toluene at 22℃; for 20h; Sealed tube; Inert atmosphere; enantioselective reaction;98%
di-tert-butyl-diazodicarboxylate
870-50-8

di-tert-butyl-diazodicarboxylate

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

C20H27BrN2O5

C20H27BrN2O5

Conditions
ConditionsYield
With (R,R)-(-)-2,6-bis[2-(hydroxyldiphenylmethyl)-1-pyrrolidinyl-methyl]-4-methylphenole; diethylzinc In tetrahydrofuran at 23℃; Molecular sieve; enantioselective reaction;98%
chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

((7-bromo-3,4-dihydronaphthalen-1-yl)oxy)trimethylsilane
309929-09-7

((7-bromo-3,4-dihydronaphthalen-1-yl)oxy)trimethylsilane

Conditions
ConditionsYield
Stage #1: 7-bromo-3,4-dihydro-2H-naphthalen-1-one With triethylamine at 20℃; for 0.25h; Inert atmosphere;
Stage #2: chloro-trimethyl-silane for 0.666667h; Inert atmosphere;
Stage #3: With sodium iodide In acetonitrile at 40℃; for 2h;
96%
Stage #1: 7-bromo-3,4-dihydro-2H-naphthalen-1-one With lithium diisopropyl amide In tetrahydrofuran; hexane at -78℃; for 2h; Metallation;
Stage #2: chloro-trimethyl-silane In tetrahydrofuran; hexane at -78 - 20℃; for 2h; Substitution; Silylation;
92%
With triethylamine; sodium iodide In acetonitrile at 20℃; for 0.5h; Inert atmosphere;69%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

4-bromo-benzaldehyde
1122-91-4

4-bromo-benzaldehyde

(E)-7-bromo-2-(4-bromobenzylidene)-1-tetralone
1039020-10-4

(E)-7-bromo-2-(4-bromobenzylidene)-1-tetralone

Conditions
ConditionsYield
With potassium hydroxide In methanol at 20℃; for 48h;96%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

4-Phenylbenzaldehyde
3218-36-8

4-Phenylbenzaldehyde

(E)-2-(biphenyl-4-ylmethylene)-7-bromo-1-tetralone
1039020-19-3

(E)-2-(biphenyl-4-ylmethylene)-7-bromo-1-tetralone

Conditions
ConditionsYield
With potassium hydroxide In methanol at 20℃; for 48h;96%
2-diazo-3-phenyl-propionic acid ethyl ester
15626-54-7

2-diazo-3-phenyl-propionic acid ethyl ester

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

ethyl 2-(2-(7-bromo-1-oxo-1,2,3,4-tetrahydronaphthalen-2-yl)hydrazono)-3-phenylpropanoate

ethyl 2-(2-(7-bromo-1-oxo-1,2,3,4-tetrahydronaphthalen-2-yl)hydrazono)-3-phenylpropanoate

Conditions
ConditionsYield
Stage #1: 7-bromo-3,4-dihydro-2H-naphthalen-1-one With C43H64N4O4; lithium carbonate; scandium tris(trifluoromethanesulfonate) In dichloromethane at 20℃; for 0.0833333h; Inert atmosphere;
Stage #2: 2-diazo-3-phenyl-propionic acid ethyl ester In dichloromethane at 20℃; Inert atmosphere; optical yield given as %ee; enantioselective reaction;
96%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

C18H15BrO2

C18H15BrO2

Conditions
ConditionsYield
With potassium hydroxide In methanol; water at 25℃; for 28h;96%
N,N-phenylbistrifluoromethane-sulfonimide
37595-74-7

N,N-phenylbistrifluoromethane-sulfonimide

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

7-bromo-3,4-dihydronaphthalen-1-yl trifluoromethanesulfonate

7-bromo-3,4-dihydronaphthalen-1-yl trifluoromethanesulfonate

Conditions
ConditionsYield
With potassium hexamethylsilazane In tetrahydrofuran; toluene at -78 - 20℃; Inert atmosphere;96%
carbon monoxide
201230-82-2

carbon monoxide

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

butan-1-ol
71-36-3

butan-1-ol

7-butoxycarbonyl-α-tetralone

7-butoxycarbonyl-α-tetralone

Conditions
ConditionsYield
With bis-triphenylphosphine-palladium(II) chloride In triethylamine; N,N-dimethyl-formamide at 80℃; under 2068.6 Torr;95%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

6-bromo-1,2,3,4-tetrahydronaphthalene
6134-56-1

6-bromo-1,2,3,4-tetrahydronaphthalene

Conditions
ConditionsYield
With triethylsilane In trifluoroacetic acid at 20℃;95%
With triethylsilane; trifluoroacetic acid at 20 - 50℃; for 4h;94%
With indium(III) chloride; dimethylmonochlorosilane In dichloromethane at 0℃; for 14h;32%
With triethylsilane; trifluoroacetic acid at 0 - 35℃;
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

(E)-7-bromo-3,4-dihydronaphthalene-1(2H)-oneoxime

(E)-7-bromo-3,4-dihydronaphthalene-1(2H)-oneoxime

Conditions
ConditionsYield
With hydroxylamine hydrochloride; sodium acetate In ethanol for 2h; Reflux;95%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

dimethyl sulfoxide
67-68-5

dimethyl sulfoxide

2-(7-bromo-1,4-naphthoquinone)methyl sulfide

2-(7-bromo-1,4-naphthoquinone)methyl sulfide

Conditions
ConditionsYield
With iodine at 80℃; for 12h; Inert atmosphere;95%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

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

N,N-dimethyl-formamide

7-bromo-1-chloro-3,4-dihydronaphthalene-2-aldehyde
283177-40-2

7-bromo-1-chloro-3,4-dihydronaphthalene-2-aldehyde

Conditions
ConditionsYield
With trichlorophosphate In Trichloroethylene at 60 - 70℃; for 6h; Chlorination;94%
With trichlorophosphate Vilsmeier-Haack Formylation;
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

Methyltriphenylphosphonium bromide
1779-49-3

Methyltriphenylphosphonium bromide

7-bromo-1-methylene-1,2,3,4-tetrahydronaphthalene
740842-57-3

7-bromo-1-methylene-1,2,3,4-tetrahydronaphthalene

Conditions
ConditionsYield
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20℃; for 1h; Inert atmosphere;
Stage #2: 7-bromo-3,4-dihydro-2H-naphthalen-1-one In tetrahydrofuran at 20℃; Inert atmosphere;
93%
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran at -45℃; for 1h;
Stage #2: 7-bromo-3,4-dihydro-2H-naphthalen-1-one In tetrahydrofuran at -45 - 20℃;
52%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

7-Bromo-1,2,3,4-tetrahydronaphthalene-1-spiro-2'-(1',3'-dioxacyclopentane)
111773-13-8

7-Bromo-1,2,3,4-tetrahydronaphthalene-1-spiro-2'-(1',3'-dioxacyclopentane)

Conditions
ConditionsYield
With toluene-4-sulfonic acid In toluene Dean Stark;92%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

benzaldehyde
100-52-7

benzaldehyde

7-benzylidene-2-bromo-α-tetralone
116047-27-9

7-benzylidene-2-bromo-α-tetralone

Conditions
ConditionsYield
With potassium hydroxide In methanol at 20℃; for 48h;92%
With potassium hydroxide In methanol; water at 20℃; for 12h;91%
potassium cyanide

potassium cyanide

7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

ammonium carbonate
506-87-6

ammonium carbonate

7'-bromo-3',4'-dihydro-2'H-spiro[imidazolidine-4,1'-naphthalene]-2,5-dione
1338093-88-1

7'-bromo-3',4'-dihydro-2'H-spiro[imidazolidine-4,1'-naphthalene]-2,5-dione

Conditions
ConditionsYield
Stage #1: potassium cyanide; 7-bromo-3,4-dihydro-2H-naphthalen-1-one; ammonium carbonate With sodium hydrogensulfite In ethanol at 130℃; for 24h;
Stage #2: With hydrogenchloride In ethanol; water pH=~ 2;
92%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

N-(but-3-en-1-yloxy)carbamic acid 1,1-dimethylethyl ester
635757-93-6

N-(but-3-en-1-yloxy)carbamic acid 1,1-dimethylethyl ester

C19H25NO4

C19H25NO4

Conditions
ConditionsYield
With bis(3,5,3′,5′-dimethoxydibenzylideneacetone)palladium(0); C42H68NO3PS; caesium carbonate In tert-butyl methyl ether at 30℃; for 48h; Inert atmosphere; enantioselective reaction;91%
7-bromo-3,4-dihydro-2H-naphthalen-1-one
32281-97-3

7-bromo-3,4-dihydro-2H-naphthalen-1-one

toluene-4-sulfonic acid hydrazide
1576-35-8

toluene-4-sulfonic acid hydrazide

C17H17BrN2O2S

C17H17BrN2O2S

Conditions
ConditionsYield
With toluene-4-sulfonic acid In methanol for 7h;90%

7-Bromo-1-tetralone Specification

The 7-Bromo-3,4-dihydro-1(2h)-naphthalenone is a kind of benzocycles with the formula C10H9BrO. The IUPAC name of this product is 7-bromo-3,4-dihydro-2H-naphthalen-1-one. With the CAS registry number 32281-97-3, it is also named as 1(2H)-Naphthalenone, 7-bromo-3,4-dihydro-; 7-Bromo-1-tetralone. Thic chemical is yellow solid which is used as pharmaceutical intermediates. It must be stored in cool and dry place.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 3.52; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 1; (4)#H bond donors: 0; (5)Index of Refraction: 1.598; (6)Molar Refractivity: 50.85 cm3; (7)Molar Volume: 148.9 cm3; (8)Polarizability: 20.16×10-24 cm3; (9)Surface Tension: 46.4 dyne/cm; (10)Enthalpy of Vaporization: 55.28 kJ/mol; (11)Vapour Pressure: 0.000548 mmHg at 25°C; (12)XLogP3-AA: 2.7; (13)Tautomer Count: 2; (14)Exact Mass: 223.983678; (15)MonoIsotopic Mass: 223.983678; (16)Topological Polar Surface Area: 17.1; (17)Heavy Atom Count: 12; (18)Complexity: 190.

When you are using this chemical, please be cautious about it as the following. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. If you want to contact this product, you must wear suitable protective clothing, gloves and eye/face protection.

People can use the following data to convert to the molecule structure.
1.SMILES: Brc2ccc1c(C(=O)CCC1)c2;
2.InChI: InChI=1/C10H9BrO/c11-8-5-4-7-2-1-3-10(12)9(7)6-8/h4-6H,1-3H2;
3.InChIKey: YGVDCGFUUUJCDF-UHFFFAOYAP.

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