Conditions | Yield |
---|---|
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
3,3-dimethyl-butan-2-one
Conditions | Yield |
---|---|
Ambient temperature; | 100% |
Ambient temperature; Yield given; |
2,3-dimethyl-2,3-epoxybutane
A
3,3-dimethyl-butan-2-one
B
2,3-dimethyl-2,3-butane diol
C
2,3-dimethyl-1-buten-3-ol
Conditions | Yield |
---|---|
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
3,3-dimethyl-butan-2-one
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With 4-methyl-morpholine; 6C6H15P*4CF3O3S(1-)*2Ru(2+); acetone at 20℃; for 0.75h; | 98% |
pinacolone oxime
3,3-dimethyl-butan-2-one
Conditions | Yield |
---|---|
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
3,3-dimethyl-butan-2-one
Conditions | Yield |
---|---|
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
3,3-dimethyl-butan-2-one
Conditions | Yield |
---|---|
With silica gel; copper(II) nitrate In tetrachloromethane for 0.25h; Ambient temperature; | 93% |
3,3,4,4-tetramethyl-1,2-dioxetane
diphenyl(methyl)phosphine
A
3,3-dimethyl-butan-2-one
B
2,2-dihydro-4,4,5,5-tetramethyl-2-methyl-2,2-diphenyl-1,3,2-dioxaphospholane
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With hydrogenchloride; hydroquinone In diphenylether at 75℃; for 6h; Temperature; Solvent; Concentration; Reagent/catalyst; | 91.1% |
3,3,4,4-tetramethyl-1,2-dioxetane
dimethyl-d6-phenylphosphine
A
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
Conditions | Yield |
---|---|
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
A
3,3-dimethyl-butan-2-one
(P(CH3)3)4Ru(OC6H4CH3)2
Conditions | Yield |
---|---|
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
Dimethyl(phenyl)phosphine
A
3,3-dimethyl-butan-2-one
B
2,2-dihydro-4,4,5,5-tetramethyl-2,2-dimethyl-2-phenyl-1,3,2-dioxaphospholane
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With aluminium trichloride; copper(l) chloride; lithium chloride In tetrahydrofuran at 10℃; for 0.166667h; | 87% |
2,3-dimethyl-2,3-butane diol
A
3,3-dimethyl-butan-2-one
B
2,3-dimethyl-buta-1,3-diene
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With lead(IV) acetate; oxygen; ozone In dichloromethane at 0℃; for 1.5h; | 82% |
trans-t-BuOIr(CO)(PPh3)2
triphenylphosphine-d15
A
3,3-dimethyl-butan-2-one
Conditions | Yield |
---|---|
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 |
A
3,3-dimethyl-butan-2-one
dihydridotetrakis(trimethylphosphino)ruthenium(II)
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With bismuth oxide perchlorate In dichloromethane at 20℃; for 1h; Rearrangement; | 75% |
at 600℃; | 13% |
With tetrabutylammonium perchlorate In dichloromethane electrolysis; Yield given; |
pinacolone oxime
acetylene
A
3,3-dimethyl-butan-2-one
B
2-tert-butyl-1H-pyrrole
C
O-Vinylpinacolonoxime
Conditions | Yield |
---|---|
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
3-methylthio-3-N-piperidino-1-phenyl-2-propen-1-one
A
3,3-dimethyl-butan-2-one
B
2,2-dimethylpropiophenone
Conditions | Yield |
---|---|
In tetrahydrofuran; diethyl ether for 4h; Ambient temperature; | A n/a B 66% |
3,3-dimethyl-butan-2-one
3,3-dimethyl-2-butanol
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
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
ethylhydrazine carboxylate
(1,2,2-trimethyl-propylidene)-carbazic acid ethyl ester
Conditions | Yield |
---|---|
100% | |
With ethanol; acetic acid | |
With acetic acid In ethanol |
3,3-dimethyl-butan-2-one
4-iodoanisol
1-(2-methoxyphenyl)-3,3-dimethyl-2-butanone
Conditions | Yield |
---|---|
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
N,N-dimethyl-formamide
(2Z)-3-chloro-4,4-dimethylpent-2-enenitrile
Conditions | Yield |
---|---|
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
t-butyldimethylsiyl triflate
3,3-dimethyl-2-{[(1,1-dimethylethyl)dimethylsilyl]oxy}-1-butene
Conditions | Yield |
---|---|
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
(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)]
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
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
benzaldehyde
(E)-benzylidenepinacolone
Conditions | Yield |
---|---|
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
methyloxirane
2,2-dimethyl-6-hydroxy-3-heptanone
Conditions | Yield |
---|---|
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
trimethylsilyl cyanide
3,3-dimethyl-2-<(trimethylsilyl)oxy>-2-cyanobutane
Conditions | Yield |
---|---|
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℃; |
Conditions | Yield |
---|---|
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
Conditions | Yield |
---|---|
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
bis(diisopropylamino)chloroborane
bis(diisopropylamino)boron enolate
Conditions | Yield |
---|---|
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% |
Conditions | Yield |
---|---|
With magnesium sulphate trihydrate In dichloromethane for 2h; Reflux; | 99% |
3,3-dimethyl-butan-2-one
1-Bromopinacolon
5-hydroxy-2,2,5,6,6-pentamethylheptan-3-one
Conditions | Yield |
---|---|
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
benzyl alcohol
4,4-dimethyl-1-phenylpentan-3-one
Conditions | Yield |
---|---|
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
N,N-phenylbistrifluoromethane-sulfonimide
3,3-dimethyl-1-butenyl-2-triflate
Conditions | Yield |
---|---|
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
benzene-1,2-diol
2-tert-butyl-2-methyl-1,3-benzodioxole
Conditions | Yield |
---|---|
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
triethylsilyl chloride
1-triethylsiloxy-1-tert-butylethene
Conditions | Yield |
---|---|
With n-butyllithium; 1,1,1,3,3,3-hexamethyl-disilazane In tetrahydrofuran; hexane at -78℃; Inert atmosphere; | 98% |
Conditions | Yield |
---|---|
With sodium In methanol for 12h; Claisen Condensation; Inert atmosphere; Schlenk technique; Glovebox; | 98% |
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
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.
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.
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. |
Reported in EPA TSCA Inventory.
Hazard Codes: F,XnXi
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.
DOT Classification: 3; Label: Flammable Liquid
CONTENT: 98.0% min
WATER: 1.0% max
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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