Product Name

  • Name

    3,3-Dimethyl-2-butanone

  • EINECS 200-920-4
  • CAS No. 75-97-8
  • Article Data357
  • CAS DataBase
  • Density 0.802 g/cm3
  • Solubility 2.44 g/100 mL (15 °C) in water
  • Melting Point -52.5 °C
  • Formula C6H12O
  • Boiling Point 104.9 °C at 760 mmHg
  • Molecular Weight 100.161
  • Flash Point 23.9 °C
  • Transport Information UN 1224 3/PG 2
  • Appearance colourless liquid
  • Safety 9-16-29-33-20/21
  • Risk Codes 11-22-10
  • Molecular Structure Molecular Structure of 75-97-8 (3,3-Dimethyl-2-butanone)
  • Hazard Symbols FlammableF, HarmfulXn, IrritantXi
  • Synonyms 3,3-Dimethyl-2-butanone;Pinakolin [German];2-Butanone,3,3-dimethyl-;3,3-Dimethylbutanone;t-butyl methyl ketone;Pinacoline;Methyl t-butyl ketone;3,3-dimethylbutan-2-one;tert-Butyl methyl ketone;2, 2-Dimethyl-3-butanone;Ketone, tert-butyl methyl;2,2-Dimethyl-3-butanone;Methyltert-butyl ketone;2-Butanone, 3,3-dimethyl-;4-01-00-03310 (Beilstein Handbook Reference);1,1,1-Trimethylacetone;2,2-Dimethylbutanone;3, 3-Dimethyl-2-butanone;Ketone, t-butyl methyl;Pinacolin;Pinakolin;Methyl tert-butyl ketone;
  • PSA 17.07000
  • LogP 1.62150

Synthetic route

2,3-dimethyl-2,3-butane diol
76-09-5

2,3-dimethyl-2,3-butane diol

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With aluminium phosphate aluminium oxide catalyst Heating;100%
With silica-supported orthophosphoric acid In neat (no solvent) at 180℃; for 0.5h; Catalytic behavior; Temperature; Time; Pinacol Rearrangement; Green chemistry;100%
With [Fe3O(OOCC6H5)6(H2O)3]4[α-SiW12O40] In toluene at 99.84℃; for 6h;80%
C6H12OS
133619-37-1

C6H12OS

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
Ambient temperature;100%
Ambient temperature; Yield given;
2,3-dimethyl-2,3-epoxybutane
5076-20-0

2,3-dimethyl-2,3-epoxybutane

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

2,3-dimethyl-2,3-butane diol
76-09-5

2,3-dimethyl-2,3-butane diol

C

2,3-dimethyl-1-buten-3-ol
10473-13-9

2,3-dimethyl-1-buten-3-ol

Conditions
ConditionsYield
With perchloric acid; sodium perchlorate at 25℃; Yields of byproduct given;A n/a
B 99.93%
C n/a
With perchloric acid; sodium perchlorate at 25℃; Product distribution; heterogeneous reaction;
3,3-dimethyl-2-butanol
464-07-3, 20281-91-8

3,3-dimethyl-2-butanol

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With 2,2,6,6-tetramethyl-piperidine-N-oxyl; trichloroisocyanuric acid; sodium hydrogencarbonate; sodium bromide In water; acetone at 20℃; for 1h;98%
With dihydrogen peroxide In water; tert-butyl alcohol at 80℃; for 24h;97%
With Ni(NTf2)2·xH2O; 4-mercapto-4-oxide-dinaphtho<2,1-d:1',2'-f><1,3,2>dioxaphosphepin; 9-(2-mesityl)-10-methylacridinium perchlorate In dichloromethane at 27 - 29℃; for 20h; Inert atmosphere; Irradiation;91%
(S)-3,3-dimethylbutan-2-ol
1517-67-5

(S)-3,3-dimethylbutan-2-ol

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With 4-methyl-morpholine; 6C6H15P*4CF3O3S(1-)*2Ru(2+); acetone at 20℃; for 0.75h;98%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With silica gel; copper(II) nitrate In tetrachloromethane for 1h; Heating;97%
With dihydrogen peroxide; tripropylammonium fluorochromate (VI) In acetone at 0 - 10℃; for 1.5h;97%
With sodium tungstate; dihydrogen peroxide In water; acetone at -5 - 20℃; for 5h;70%
3,3-dimethyl-butan-2-one-phenylhydrazone
39263-43-9

3,3-dimethyl-butan-2-one-phenylhydrazone

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With baker's yeast; phosphate buffer In ethanol at 37℃; for 14h;93%
With iron(II) sulfate In chloroform at 20℃; for 1h; Hydrolysis;91%
2-(t-butyl)-2-methyl-1,3-dithiolane
26785-73-9

2-(t-butyl)-2-methyl-1,3-dithiolane

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With silica gel; copper(II) nitrate In tetrachloromethane for 0.25h; Ambient temperature;93%
3,3,4,4-tetramethyl-1,2-dioxetane
35856-82-7

3,3,4,4-tetramethyl-1,2-dioxetane

diphenyl(methyl)phosphine
1486-28-8

diphenyl(methyl)phosphine

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

2,2-dihydro-4,4,5,5-tetramethyl-2-methyl-2,2-diphenyl-1,3,2-dioxaphospholane
88635-85-2

2,2-dihydro-4,4,5,5-tetramethyl-2-methyl-2,2-diphenyl-1,3,2-dioxaphospholane

Conditions
ConditionsYield
In benzene-d6 at 19.5℃; Kinetics; other temperatures;A 7%
B 92%
In benzene-d6 at 19.5℃; Kinetics; Rate constant; Thermodynamic data; other temperatures, different concentrations, isotope effects; Ea, ΔS(excit);A 8%
B 92%
formaldehyd
50-00-0

formaldehyd

2-methyl-2-butylchloride
594-36-5

2-methyl-2-butylchloride

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With hydrogenchloride; hydroquinone In diphenylether at 75℃; for 6h; Temperature; Solvent; Concentration; Reagent/catalyst;91.1%
3,3,4,4-tetramethyl-1,2-dioxetane
35856-82-7

3,3,4,4-tetramethyl-1,2-dioxetane

dimethyl-d6-phenylphosphine
88635-84-1

dimethyl-d6-phenylphosphine

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

2,2-dihydro-4,4,5,5-tetramethyl-2,2-d6-dimethyl-2-phenyl-1,3,2-dioxaphospholane
88635-88-5

2,2-dihydro-4,4,5,5-tetramethyl-2,2-d6-dimethyl-2-phenyl-1,3,2-dioxaphospholane

Conditions
ConditionsYield
In benzene-d6 at 19.5℃; Kinetics; Rate constant; Thermodynamic data; other temperatures, Ea, ΔS(excit);A 9%
B 91%
In benzene-d6 at 19.5℃;A 9%
B 91%
p-cresol
106-44-5

p-cresol

(P(CH3)3)4Ru(OC(C(CH3)3)CH)

(P(CH3)3)4Ru(OC(C(CH3)3)CH)

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

(P(CH3)3)4Ru(OC6H4CH3)2
125847-62-3, 131235-33-1

(P(CH3)3)4Ru(OC6H4CH3)2

Conditions
ConditionsYield
In benzene-d6 inert gas, p-cresol added as solid; not isolated; NMR;A >99
B 91%
3,3,4,4-tetramethyl-1,2-dioxetane
35856-82-7

3,3,4,4-tetramethyl-1,2-dioxetane

Dimethyl(phenyl)phosphine
672-66-2

Dimethyl(phenyl)phosphine

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

2,2-dihydro-4,4,5,5-tetramethyl-2,2-dimethyl-2-phenyl-1,3,2-dioxaphospholane
88635-87-4

2,2-dihydro-4,4,5,5-tetramethyl-2,2-dimethyl-2-phenyl-1,3,2-dioxaphospholane

Conditions
ConditionsYield
In benzene-d6 at 19.5℃; Kinetics; Rate constant; Thermodynamic data; other temperatures, Ea, ΔS(excit);A 10%
B 90%
In benzene-d6 at 19.5℃;A 10%
B 90%
methylmagnesium bromide
75-16-1

methylmagnesium bromide

pivaloyl chloride
3282-30-2

pivaloyl chloride

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With aluminium trichloride; copper(l) chloride; lithium chloride In tetrahydrofuran at 10℃; for 0.166667h;87%
2,3-dimethyl-2,3-butane diol
76-09-5

2,3-dimethyl-2,3-butane diol

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

2,3-dimethyl-buta-1,3-diene
513-81-5

2,3-dimethyl-buta-1,3-diene

Conditions
ConditionsYield
With H6S2V2W16O62 at 149.84℃; for 0.5h; Reagent/catalyst; Pinacol Rearrangement;A 82%
B 16%
With SBA-15 supported zirconium In toluene at 110℃; for 2h; Pinacol rearrangement;A 81%
B 19%
With Cu2+-montmorillonit In solid at 100℃; for 1h; Product distribution; effects of homoionic-montmorillonits contains various metal ions;A 78%
B 3%
3,4,4-trimethyl-1-penten-3-ol
3732-61-4

3,4,4-trimethyl-1-penten-3-ol

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With lead(IV) acetate; oxygen; ozone In dichloromethane at 0℃; for 1.5h;82%
trans-t-BuOIr(CO)(PPh3)2
98720-65-1

trans-t-BuOIr(CO)(PPh3)2

triphenylphosphine-d15
24762-44-5

triphenylphosphine-d15

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

(P(C6H5)3)2P(C6(2)H5)3(CO)IrH

(P(C6H5)3)2P(C6(2)H5)3(CO)IrH

Conditions
ConditionsYield
In (2)H8-toluene Kinetics; toluene-d7, PPh3, 95°C; not sepd., detected by (1)H-NMR and mass-spectra;A 81%
B n/a
(P(CH3)3)4Ru(OC(C(CH3)3)CH)

(P(CH3)3)4Ru(OC(C(CH3)3)CH)

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

dihydridotetrakis(trimethylphosphino)ruthenium(II)
134002-31-6, 76171-49-8

dihydridotetrakis(trimethylphosphino)ruthenium(II)

Conditions
ConditionsYield
With H2 In benzene-d6 inert gas, soln. of Ru-compound degassed, immersed in liquid nitrogen, exposed to H2 (450 Torr), sealed, heated to 45°C for 8 h; not isolated; NMR;A 61%
B 77%
2,3-dimethyl-2,3-epoxybutane
5076-20-0

2,3-dimethyl-2,3-epoxybutane

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

Conditions
ConditionsYield
With bismuth oxide perchlorate In dichloromethane at 20℃; for 1h; Rearrangement;75%
at 600℃;13%
With tetrabutylammonium perchlorate In dichloromethane electrolysis; Yield given;
acetylene
74-86-2

acetylene

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

2-tert-butyl-1H-pyrrole
5398-58-3

2-tert-butyl-1H-pyrrole

C

O-Vinylpinacolonoxime
255376-82-0

O-Vinylpinacolonoxime

Conditions
ConditionsYield
With potassium hydroxide In dimethyl sulfoxide; pentane at 70℃; under 12160 Torr; for 0.1h; Addition; Cyclisation; Rearrangement;A 1.9%
B 1.9%
C 74.8%
tert-butylmagnesium bromide
2259-30-5

tert-butylmagnesium bromide

3-methylthio-3-N-piperidino-1-phenyl-2-propen-1-one
185245-65-2

3-methylthio-3-N-piperidino-1-phenyl-2-propen-1-one

A

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

B

2,2-dimethylpropiophenone
938-16-9

2,2-dimethylpropiophenone

Conditions
ConditionsYield
In tetrahydrofuran; diethyl ether for 4h; Ambient temperature;A n/a
B 66%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

3,3-dimethyl-2-butanol
464-07-3, 20281-91-8

3,3-dimethyl-2-butanol

Conditions
ConditionsYield
With potassium tert-butylate; hydrogen; [RuCl2(Ph2PCH2CH2NH2)2] at 20℃; under 2280 Torr; for 12h;100%
With hydrogen; Ru((R,R)-cyP2N2)HCl In benzene-d6 at 20℃; under 2280.15 Torr; for 12h; Product distribution / selectivity; Alkaline conditions; Cooling with liquid nitrogen;100%
With hydrogen; Ru((R,R)-cyP2(NH)2)HCl In benzene-d6 at 20℃; under 2280.15 Torr; for 12h; Product distribution / selectivity; Alkaline conditions; Cooling with liquid nitrogen;100%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

(S)-3,3-dimethylbutan-2-ol
1517-67-5

(S)-3,3-dimethylbutan-2-ol

Conditions
ConditionsYield
With potassium tert-butylate; hydrogen; [dichloro((S)-2,2'-bis(di-4-tolylphosphino)-1,1'-binaphthyl)(α-picolylamino)ruthenium(II)] In ethanol at 25℃; under 3800.26 - 15201 Torr; for 5 - 24h; Product distribution / selectivity;100%
With 4-methyl-morpholine; 6C6H15P*4CF3O3S(1-)*2Ru(2+); isopropyl alcohol In 2,2,2-trifluoroethanol at 45℃; for 3h;99%
With [dichloro((S)-2,2'-bis(di-4-tolylphosphino)-1,1'-binaphthyl)(α-picolylamino)ruthenium(II)]; potassium tert-butylate; hydrogen In ethanol at 25℃; under 3800 Torr; for 5h;98%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

t-butylglyoxal
4480-47-1

t-butylglyoxal

Conditions
ConditionsYield
With selenium(IV) oxide In 1,4-dioxane; water Heating;100%
With selenium(IV) oxide at 50℃; for 5h; Temperature;45.5%
With selenium(IV) oxide; water In methanol for 20h; Reflux;21%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

ethylhydrazine carboxylate
4114-31-2

ethylhydrazine carboxylate

(1,2,2-trimethyl-propylidene)-carbazic acid ethyl ester
78259-24-2

(1,2,2-trimethyl-propylidene)-carbazic acid ethyl ester

Conditions
ConditionsYield
100%
With ethanol; acetic acid
With acetic acid In ethanol
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

4-iodoanisol
529-28-2

4-iodoanisol

1-(2-methoxyphenyl)-3,3-dimethyl-2-butanone
75508-73-5

1-(2-methoxyphenyl)-3,3-dimethyl-2-butanone

Conditions
ConditionsYield
With potassium tert-butylate In ammonia at -33℃; Irradiation;100%
With potassium tert-butylate In water; dimethyl sulfoxide
With hydrogenchloride; sodium amide In water; dimethyl sulfoxide
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

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

N,N-dimethyl-formamide

(2Z)-3-chloro-4,4-dimethylpent-2-enenitrile
29586-83-2

(2Z)-3-chloro-4,4-dimethylpent-2-enenitrile

Conditions
ConditionsYield
Stage #1: 3,3-dimethyl-butan-2-one; N,N-dimethyl-formamide With trichlorophosphate In 1,2-dichloro-ethane at 75℃; for 4h;
Stage #2: With hydroxylamine sulfate In 1,2-dichloro-ethane at 85℃; for 1h; Further stages.;
100%
Stage #1: 3,3-dimethyl-butan-2-one; N,N-dimethyl-formamide With trichlorophosphate In 1,2-dichloro-ethane at 0 - 75℃; for 4h; Inert atmosphere;
Stage #2: With hydroxylamine hydrochloride In 1,2-dichloro-ethane at 80℃; for 2h; Inert atmosphere;
56%
Stage #1: 3,3-dimethyl-butan-2-one; N,N-dimethyl-formamide With trichlorophosphate In 1,2-dichloro-ethane at 0 - 75℃; for 4h;
Stage #2: With hydroxylamine hydrochloride In 1,2-dichloro-ethane at 80℃; for 2h;
56%
With hydroxylamine sulfate; trichlorophosphate 1.) 1,2-dichloroethane, 50 - 55 deg C, 2 h; 70 - 75 deg C, 2 h, 2.) 85 deg C, 1 h; Yield given. Multistep reaction;
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

t-butyldimethylsiyl triflate
69739-34-0

t-butyldimethylsiyl triflate

3,3-dimethyl-2-{[(1,1-dimethylethyl)dimethylsilyl]oxy}-1-butene
84850-50-0

3,3-dimethyl-2-{[(1,1-dimethylethyl)dimethylsilyl]oxy}-1-butene

Conditions
ConditionsYield
With triethylamine In benzene for 4h; Heating;100%
With 2,6-dimethylpyridine In dichloromethane at 0 - 20℃; for 5h; Sealed tube; Inert atmosphere;
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

(meso-5,10,15,20-tetra-p-tolylporphyrinato)Hf=N-2,6-diisopropylphenyl
241475-84-3

(meso-5,10,15,20-tetra-p-tolylporphyrinato)Hf=N-2,6-diisopropylphenyl

(meso-5,10,15,20-tetra-p-tolylporphyrinato)Hf(NH-2,6-diisopropylphenyl)[OC(tBu)(=CH2)]
273927-92-7

(meso-5,10,15,20-tetra-p-tolylporphyrinato)Hf(NH-2,6-diisopropylphenyl)[OC(tBu)(=CH2)]

Conditions
ConditionsYield
With Ph3CH In benzene-d6 under N2 atm. (TTP)Hf=NAriPr, pinacolone, and Ph3CH reacted in C6D6 at 25°C for 17 h; not isolated, identified by NMR spectroscopy;100%
2-bromo-6-methylpyridine
5315-25-3

2-bromo-6-methylpyridine

3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

1-(6-bromopyridin-2-yl)-2,3,3-trimethylbutan-2-ol

1-(6-bromopyridin-2-yl)-2,3,3-trimethylbutan-2-ol

Conditions
ConditionsYield
Stage #1: 2-bromo-6-methylpyridine With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -78 - 0℃; for 0.5h;
Stage #2: 3,3-dimethyl-butan-2-one In tetrahydrofuran; hexane at -78 - 20℃; for 0.5h;
100%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

benzaldehyde
100-52-7

benzaldehyde

(E)-benzylidenepinacolone
538-44-3, 28435-47-4, 29569-91-3

(E)-benzylidenepinacolone

Conditions
ConditionsYield
With sodium hydroxide; dodecyl-α,ω-bis(dodecyldimethylammonium bromide) In water at 25℃; for 1.16667h; Sonication;99%
With barium(II) hydroxide In ethanol at 20℃;99%
barium dihydroxide In ethanol for 1h; Heating;96%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

methyloxirane
75-56-9, 16033-71-9

methyloxirane

2,2-dimethyl-6-hydroxy-3-heptanone
139367-18-3

2,2-dimethyl-6-hydroxy-3-heptanone

Conditions
ConditionsYield
With lithium hexamethyldisilazane; yttrium(III) trifluoromethanesulfonate In hexane; toluene at 0℃; for 18h;99%
With lithium perchlorate; lithium hexamethyldisilazane 1.) THF, 0 deg C, 15 min, 2.) 25 deg C, 72 h; Yield given. Multistep reaction;
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

trimethylsilyl cyanide
7677-24-9

trimethylsilyl cyanide

3,3-dimethyl-2-<(trimethylsilyl)oxy>-2-cyanobutane
219860-94-3

3,3-dimethyl-2-<(trimethylsilyl)oxy>-2-cyanobutane

Conditions
ConditionsYield
With potassium carbonate at 20℃; for 4.5h;99%
With bis(triphenylphosphine)iminium chloride at 25℃; for 1h; Inert atmosphere; Neat (no solvent);97%
1,4-diaza-bicyclo[2.2.2]octane at 20℃;94%
With zinc(II) iodide In dichloromethane at 0 - 20℃;
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

4-chlorobenzoyl chloride
586-75-4

4-chlorobenzoyl chloride

4-(3,3-dimethyl-2-oxo-butyl)-benzamide

4-(3,3-dimethyl-2-oxo-butyl)-benzamide

Conditions
ConditionsYield
Stage #1: 4-chlorobenzoyl chloride With diisopropylamine; Rink-amide resin In tetrahydrofuran at 20℃; for 18h;
Stage #2: 3,3-dimethyl-butan-2-one With tris(dibenzylideneacetone)dipalladium (0); 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; sodium t-butanolate In 1,4-dioxane at 70℃; Buchwald-Hartwig coupling;
Stage #3: With trifluoroacetic acid In dichloromethane at 20℃;
99%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

bis(pentamethylcyclopentadienyl)dimethyl titanium

bis(pentamethylcyclopentadienyl)dimethyl titanium

bis(η5-pentamethylcyclopentadienyl)dimethyltitanium(IV)(OC(tert-butyl)CH2)

bis(η5-pentamethylcyclopentadienyl)dimethyltitanium(IV)(OC(tert-butyl)CH2)

Conditions
ConditionsYield
With methane In toluene Heating at 80°C with a slight excess of Ti-complex in toluene in a sealed tube (or under a static Ar atmosphere) for 115 h.; (1)H NMR.;99%
With methane In toluene Heating at 100°C with a slight excess of Ti-complex in toluene in a sealed tube (or under a static Ar atmosphere) for 21 h.; (1)H NMR.;71%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

bis(diisopropylamino)chloroborane
28049-80-1

bis(diisopropylamino)chloroborane

bis(diisopropylamino)boron enolate
959925-25-8

bis(diisopropylamino)boron enolate

Conditions
ConditionsYield
With potassium hexamethyldisilazane In tetrahydrofuran byproducts: KCl; under Ar atm. to soln. KHMDS in THF ketone in THF was added dropwise at 0°C for 30 min, soln. chlorobis(dialkylamino)borane in THF was added and stirred at room temp. for 1 h; soln. was centrifugated, ppt. was filtered, volatiles were evapd. in vacuo;99%
With sodium hexamethyldisilazane In tetrahydrofuran byproducts: NaCl; under Ar atm. to soln. NaHMDS in THF ketone in THF was added dropwise at0°C for 30 min, soln. chlorobis(dialkylamino)borane in THF was a dded and stirred at room temp. for 1 h; soln. was centrifugated, ppt. was filtered, volatiles were evapd. in vacuo;92%
With diisopropylamine; n-butyllithium In tetrahydrofuran; hexane byproducts: LiCl; under Ar atm. to soln. i-Pr2NH in THF n-BuLi in hexane was added at -20°C and stirred for 30 min, soln. ketone in THF was added, stirred at -20°C for 30 min, chlorobis(dialkylamino)borane in THF was added, stirred at 60°C for 24 h; soln. was centrifugated, ppt. was filtered, volatiles were evapd. in vacuo;56%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

para-methylbenzylamine
104-84-7

para-methylbenzylamine

2,2-dimethyl-N-(4-methylbenzyl)propan-1-imine

2,2-dimethyl-N-(4-methylbenzyl)propan-1-imine

Conditions
ConditionsYield
With magnesium sulphate trihydrate In dichloromethane for 2h; Reflux;99%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

1-Bromopinacolon
5469-26-1

1-Bromopinacolon

5-hydroxy-2,2,5,6,6-pentamethylheptan-3-one
3205-30-9

5-hydroxy-2,2,5,6,6-pentamethylheptan-3-one

Conditions
ConditionsYield
With samarium diiodide In tetrahydrofuran at -78℃; for 2.41667h; Reformatsky type reaction; Inert atmosphere;98%
With diethyl ether; magnesium; benzene
(i) Mg, EtBr, Et2O, (ii) /BRN= 1209331/, Et2O, benzene; Multistep reaction;
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

benzyl alcohol
100-51-6

benzyl alcohol

4,4-dimethyl-1-phenylpentan-3-one
5195-24-4

4,4-dimethyl-1-phenylpentan-3-one

Conditions
ConditionsYield
With cesium hydroxide; (1,4-dimethyl-5,7-diphenyl-1,2,3,4-tetrahydro-6H-cyclopenta[b]pyrazin-6-one)(triphenylphosphine)(dicarbonyl)iron In toluene at 90℃; for 16h; Schlenk technique; Inert atmosphere;98%
With potassium phosphate; aluminum oxyhydroxide; palladium In toluene at 110℃; for 3h;94%
With bis(μ-chloro)-bis[1,3-di(2-pyridyl)-4,6-dimethylbenzene-N,C(2'),N-iridium chloride]; caesium carbonate In tert-Amyl alcohol for 12h; Reflux;86%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

N,N-phenylbistrifluoromethane-sulfonimide
37595-74-7

N,N-phenylbistrifluoromethane-sulfonimide

3,3-dimethyl-1-butenyl-2-triflate
27701-32-2

3,3-dimethyl-1-butenyl-2-triflate

Conditions
ConditionsYield
With lithium hexamethyldisilazane In tetrahydrofuran at -78 - 20℃; Inert atmosphere;98%
Stage #1: 3,3-dimethyl-butan-2-one In tetrahydrofuran at -78℃;
Stage #2: N,N-phenylbistrifluoromethane-sulfonimide In tetrahydrofuran at -78℃;
86%
Stage #1: 3,3-dimethyl-butan-2-one With lithium diisopropyl amide In tetrahydrofuran at -78℃;
Stage #2: N,N-phenylbistrifluoromethane-sulfonimide In tetrahydrofuran at -78 - 20℃;
86%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

benzene-1,2-diol
120-80-9

benzene-1,2-diol

2-tert-butyl-2-methyl-1,3-benzodioxole
105732-50-1

2-tert-butyl-2-methyl-1,3-benzodioxole

Conditions
ConditionsYield
With toluene-4-sulfonic acid In benzene for 1h; Microwave irradiation; Reflux;98%
With toluene-4-sulfonic acid In toluene for 24h; Reflux;71%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

triethylsilyl chloride
994-30-9

triethylsilyl chloride

1-triethylsiloxy-1-tert-butylethene
51440-17-6

1-triethylsiloxy-1-tert-butylethene

Conditions
ConditionsYield
With n-butyllithium; 1,1,1,3,3,3-hexamethyl-disilazane In tetrahydrofuran; hexane at -78℃; Inert atmosphere;98%
3,3-dimethyl-butan-2-one
75-97-8

3,3-dimethyl-butan-2-one

oxalic acid diethyl ester
95-92-1

oxalic acid diethyl ester

C9H13O4(1-)*Na(1+)

C9H13O4(1-)*Na(1+)

Conditions
ConditionsYield
With sodium In methanol for 12h; Claisen Condensation; Inert atmosphere; Schlenk technique; Glovebox;98%

Pinacolone Chemical Properties

IUPAC Name: 3,3-Dimethylbutan-2-one
Synonyms of 3,3-Dimethyl-2-butanone (CAS NO.75-97-8): 1,1,1-Trimethylacetone ; 2,2-Dimethyl-3-butanone ; 2,2-Dimethylbutanone ; 2-Butanone, 3,3-dimethyl- ; 3,3-Dimethylbutanone ; 4-01-00-03310 (Beilstein Handbook Reference) ; AI3-03075 ; BRN 1209331 ; EINECS 200-920-4 ; HSDB 5210 ; Ketone, t-butyl methyl ; Ketone, tert-butyl methyl ; Methyl t-butyl ketone ; Methyl tert-butyl ketone ; Methyltert-butyl ketone ; NSC 935 ; Pinacolin ; Pinacoline ; Pinacolone ; Pinakolin ; Pinakolin [German] ; t-Butyl methyl ketone ; tert-Butyl methyl ketone
CAS NO: 75-97-8
Molecular Formula of 3,3-Dimethyl-2-butanone (CAS NO.75-97-8): C6H12O
Molecular Weight: 100.1589
Molecular Structure:

Melting Point: -52.5 °C
ProductCategories: Organics ; ketone
Polar Surface Area: 17.07 ?2
Index of Refraction: 1.394
Molar Refractivity: 29.84 cm3
Molar Volume: 124.7 cm3
Surface Tension: 22.2 dyne/cm
Density of 3,3-Dimethyl-2-butanone (CAS NO.75-97-8): 0.802 g/cm3
Flash Point: 23.9 °C
Enthalpy of Vaporization: 33.39 kJ/mol
Boiling Point: 104.9 °C at 760 mmHg
Vapour Pressure: 30.3 mmHg at 25°C

Pinacolone Uses

 3,3-Dimethyl-2-butanone (CAS NO.75-97-8) is used as an intermediate for biologically active products such as antibacterial, antifungal, antiviral and antituberculous.

Pinacolone Production

 3,3-Dimethyl-2-butanone (CAS NO.75-97-8) can be prepared by coupling reaction between the carbonyl groups with a magnesium-mercury amalgam.

Pinacolone Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LC50 inhalation 5700mg/m3 (5700mg/m3)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(12), Pg. 91, 1987.
mouse LD50 oral 1625mg/kg (1625mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(12), Pg. 91, 1987.
rabbit LD50 oral 900mg/kg (900mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(12), Pg. 91, 1987.
rat LD50 oral 610mg/kg (610mg/kg)   Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 52(12), Pg. 91, 1987.

Pinacolone Consensus Reports

Reported in EPA TSCA Inventory.

Pinacolone Safety Profile

Hazard Codes: FlammableF,HarmfulXnIrritantXi
Risk Statements: 11-22-10 
R11: Highly flammable. 
R22: Harmful if swallowed. 
R10: Flammable.
Safety Statements: 9-16-29-33-20/21 
S9: Keep container in a well-ventilated place. 
S16: Keep away from sources of ignition. 
S29: Do not empty into drains. 
S33: Take precautionary measures against static discharges. 
S20: When using, do not eat or drink. 
S21: When using do not smoke.
RIDADR: UN 1224 3/PG 2
WGK Germany: 2
RTECS: EL7700000
Hazard Note: Irritant/Highly Flammable
HazardClass: 3
PackingGroup: II
HS Code: 29141990
Moderately toxic by ingestion and subcutaneous routes. Slightly toxic by inhalation. A dangerous fire hazard when exposed to heat, flame or oxidizers. When heated to decomposition it emits acrid smoke and irritating fumes. See also KETONES.

Pinacolone Standards and Recommendations

DOT Classification:  3; Label: Flammable Liquid
CONTENT: 98.0% min
WATER: 1.0% max

Pinacolone Specification

Storage: Keep away from sources of ignition. Keep in a cool, well-ventilated place. Keep away from heat.  Keep container tightly closed. Ground all equipment containing material. Flammable materials should be stored in a separate safety storage cabinet or room. A refrigerated room would be preferable for materials with a flash point lower than 37.8°C (100°F).

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