Conditions | Yield |
---|---|
With hydrogen In water at 120℃; under 7500.75 Torr; for 3h; Reagent/catalyst; Temperature; Pressure; Solvent; | 100% |
With sodium tetrahydroborate In methanol at 0 - 20℃; for 1h; | 83% |
With lithium aluminium tetrahydride In tetrahydrofuran at 20℃; for 3h; | 53% |
2,2-Diisopropyl-4,4,6-trimethyl-[1,3,2]dioxasilinane
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
With hydrogen fluoride In acetonitrile at 25℃; for 0.25h; | 95% |
7,7,9-Trimethyl-5,8,9,11-tetrahydro-7H-6,10-dioxa-benzocyclononene
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
With hydrogen; palladium hydroxide - carbon In ethanol under 760 Torr; | 89% |
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
With low-loading and alkylated polystyrene-supported-SO3H In water at 40℃; for 12h; | 89% |
2,2-Di-tert-butyl-4,4,6-trimethyl-[1,3,2]dioxasilinane
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
With hydrogen fluoride In acetonitrile at 25℃; for 12h; | 88% |
4-Methoxymethoxy-2-methyl-pentan-2-ol
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
With (i-PrS)BBr In dichloromethane at -78℃; | 70% |
Conditions | Yield |
---|---|
With lithium perchlorate; MANDELIC ACID at 20℃; for 24h; | A 51% B 8% |
Conditions | Yield |
---|---|
With lithium perchlorate; MANDELIC ACID at 20℃; for 24h; | A 2% B 43% C 8% |
4-Hydroxy-4-methyl-2-pentanone
A
2-methyl-2,4-pentanediol
B
2-methylpentan-2-ol
Conditions | Yield |
---|---|
bei der elektrolytischen Reduktion; |
Conditions | Yield |
---|---|
With amalgamated magnesium |
2-methyl-3,4-pentadien-2-ol
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
(i) Hg(OAc)2, H2O, (ii) NaBH4; Multistep reaction; |
1.3-butanediol
2,2,4,4,6-Pentamethyl-1,3-dioxa-2-silacyclohexane
A
2-methyl-2,4-pentanediol
B
2,2,4-Trimethyl-1,3-dioxa-2-silacyclohexane
Conditions | Yield |
---|---|
boron trifluoride diethyl etherate In 1,4-dioxane at 20℃; | A n/a B 21 % Chromat. |
acetaldehyde
isobutene
A
4,4-dimethyl-1,3-dioxane
B
2,4,4,6-tetramethyl-1,3-dioxane
C
2-methyl-2,4-pentanediol
D
3-methyl-butane-1,3-diol
E
2,4,4-trimethyl-1,3-dioxane
Conditions | Yield |
---|---|
With formaldehyd; sulfuric acid In various solvent(s) at 70℃; for 4.33333h; Product distribution; var. time, steel bomb; | A 5.6 mmol B 8.5 mmol C n/a D n/a E 16.4 mmol |
4-hydroperoxy 2-methylpentane
A
Methyl isobutyl carbinol
B
2-methyl-2,4-pentanediol
C
octanol
D
2-methyl-1,4-pentanediol
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride; octane; manganese(II) stearate 1.) 125 deg C, 10 h, 2.) THF, reflux, 1 h; Yield given. Multistep reaction. Yields of byproduct given; |
Conditions | Yield |
---|---|
pH 11.9.Hydrogenation; |
Conditions | Yield |
---|---|
With methanol; sulfuric acid |
4-Hydroxy-4-methyl-2-pentanone
A
Methyl isobutyl carbinol
B
2-methyl-2,4-pentanediol
C
isopropyl alcohol
D
acetone
Conditions | Yield |
---|---|
at 150℃; Hydrogenation; |
4-Hydroxy-4-methyl-2-pentanone
A
Methyl isobutyl carbinol
B
2-methyl-2,4-pentanediol
C
isopropyl alcohol
D
acetone
Conditions | Yield |
---|---|
Hydrogenation; |
Conditions | Yield |
---|---|
Stage #1: ethylidene diacetate; isobutene With tin(IV) chloride In nitromethane at -10 - 20℃; for 1h; Addition; Salt formation; Stage #2: With water Hydrolysis; Stage #3: With potassium hydroxide In ethanol for 0.75h; Hydrolysis; Heating; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1.) O2, 2.) aq. H2SO4 / 1.) diethyl ether, -65 deg C 2: 1.) n-octane, manganese stearate, 2.) LiAlH4 / 1.) 125 deg C, 10 h, 2.) THF, reflux, 1 h View Scheme |
4,4,6-trimethyl-1,3-dioxane-2-one
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
With potassium carbonate In methanol at 23℃; | 9.1 mg |
2-methyl-2,4-pentanediol
2-benzyloxycarbonyl-3-trifluoromethyl-4-ethyl-5-formylpyrrole
2-benzyloxycarbonyl-3-trifluoromethyl-4-ethyl-5-(4',4',6'-trimethyl-1',3'-dioxane-2'-yl)pyrrole
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In benzene for 1h; Heating; | 100% |
2-methyl-2,4-pentanediol
4,4,6-trimethyl-1,3,2-dioxaborinane
Conditions | Yield |
---|---|
With dimethylsulfide; borane In dichloromethane at 0 - 25℃; | 100% |
With dimethylsulfide borane complex In dichloromethane at 0 - 20℃; for 3h; | 78% |
With borane Ν,Ν-diethylaniline complex; palladium 10% on activated carbon In 1,4-dioxane at 20℃; for 1h; Inert atmosphere; | 75% |
2-methyl-2,4-pentanediol
[Al2(OCH(CH3)2)2(CH3COCHCOCH3)2(OC(CH3)2CH2CHCH3O)]
Conditions | Yield |
---|---|
In benzene byproducts: i-PrOH; moisture free; refluxing; solvent removal; elem. anal.; | 100% |
2-methyl-2,4-pentanediol
3-Mercaptopropyltriethoxysilane
Conditions | Yield |
---|---|
toluene-4-sulfonic acid at 33 - 60℃; under 11 Torr; for 2h; | 99.2% |
2-methyl-2,4-pentanediol
tert-butyldimethylsilyl chloride
4-tert-butyldimethylsilanyloxy-2-methyl-2-pentanol
Conditions | Yield |
---|---|
With 1H-imidazole In N,N-dimethyl-formamide at 0 - 20℃; for 14h; | 99% |
With 1H-imidazole In N,N-dimethyl-formamide at 50 - 70℃; for 1.75h; |
2-methyl-2,4-pentanediol
benzoyl chloride
4-hydroxy-4-methylpentan-2-yl benzoate
Conditions | Yield |
---|---|
With N,N,N,N,-tetramethylethylenediamine; 4 A molecular sieve In dichloromethane at -78℃; for 2h; Acylation; | 99% |
2-methyl-2,4-pentanediol
[Ti(N-phenylsalicylideneimine(-H))2(OC(CH3)2CH2CH(CH3)O)]
Conditions | Yield |
---|---|
In benzene byproducts: (CH3)2CHOH; under unhydrous atm., soln. of ligand added to soln. of Ti compd. (3.06:3.01), refluxed, monitored by isopropanol liberated; concd., crystd., elem. anal.; | 99% |
Conditions | Yield |
---|---|
With β-cyclodextrin-SO3H In neat (no solvent) at 70℃; for 6h; | 99% |
2-methyl-2,4-pentanediol
2,3-dihydro-1-benzofuran-5-ylboronic acid
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 99% |
Conditions | Yield |
---|---|
With 1,1,1-trioctyl-1-methylphosphonium methylcarbonate at 20℃; for 24h; Molecular sieve; Green chemistry; chemoselective reaction; | 99% |
With 1,1,1-trioctyl-1-methylphosphonium methylcarbonate; 4,4'-di-tert-butylbiphenyl at 25℃; for 24h; Schlenk technique; Molecular sieve; | 99% |
Conditions | Yield |
---|---|
With 4,4'-di-tert-butylbiphenyl; tetramethylammonium methyl carbonate at 80℃; for 24h; Schlenk technique; Molecular sieve; | A 5% B 99% |
With tetramethylammonium methyl carbonate at 80℃; for 24h; Molecular sieve; Green chemistry; chemoselective reaction; | A 5% B 95% |
2-methyl-2,4-pentanediol
4,4,4',4',6,6'-hexamethyl-2,2'-bi(1,3,2-dioxaborinane)bis(hexyleneglycolato)diboron
Conditions | Yield |
---|---|
With tetrakis(dimethylamido)diborane In toluene at 20 - 100℃; for 1.25h; | 98.6% |
Multi-step reaction with 2 steps 1: 2,6-di-tert-butyl-4-methyl-phenol / dichloromethane / -10 - 0 °C / Inert atmosphere 2: C25H36FeN2Si / toluene / 15 h / Inert atmosphere; Reflux View Scheme |
Conditions | Yield |
---|---|
With silica gel; sodium hydroxide In ethanol for 48h; Reflux; Large scale; | 98% |
With silica gel; sodium hydroxide at 15℃; under 760.051 Torr; for 24h; Reagent/catalyst; | |
With pyridine; tetrachlorosilane |
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
In benzene byproducts: i-PrOH; Al-compd.:glycole-compd. molar ratio was 1:2, reflux for 5 h; solvent was removed in vac., solid was recrystd. from CH2Cl2/n-hexane (7:1), elem. anal.; | 98% |
2-methyl-2,4-pentanediol
4-tert-butylphenylboronic acid
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 98% |
2-methyl-2,4-pentanediol
naphthalene-2-boronic acid
4,4,6-trimethyl-2-naphthalen-2-yl[1,3,2]dioxaborinane
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 98% |
Conditions | Yield |
---|---|
With trichloroacetonitrile at 20℃; for 2.5h; Inert atmosphere; | 98% |
Conditions | Yield |
---|---|
With trichloroacetonitrile at 20℃; for 2h; Inert atmosphere; | 97% |
Conditions | Yield |
---|---|
In benzene refluxing (10 h); recrystn. (benzene/CH2Cl2); elem. anal.; | 96.61% |
2-methyl-2,4-pentanediol
Trimethyl borate
2-methoxy-4,4,6-trimethyl-1,3,2-dioxaborinane
Conditions | Yield |
---|---|
for 1.5h; Reflux; Dean-Stark; | 96.1% |
2-methyl-2,4-pentanediol
di-tert-butylsilyl bis(trifluoromethanesulfonate)
2,2-Di-tert-butyl-4,4,6-trimethyl-[1,3,2]dioxasilinane
Conditions | Yield |
---|---|
With 2,6-dimethylpyridine In chloroform-d1 at 25℃; | 96% |
2-methyl-2,4-pentanediol
Conditions | Yield |
---|---|
In benzene for 4h; Reflux; | 96% |
2-methyl-2,4-pentanediol
4-Bromophenylboronic acid
2-(4-bromophenyl)-4,4,6-trimethyl-1,3,2-dioxaborinane
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 96% |
2-methyl-2,4-pentanediol
(4-(trimethylsilyl)phenyl)boronic acid
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 96% |
Conditions | Yield |
---|---|
With antimonypentachloride In dichloromethane at 0℃; for 0.25h; | 95% |
2-methyl-2,4-pentanediol
carbonic acid dimethyl ester
4,4,6-trimethyl-1,3-dioxane-2-one
Conditions | Yield |
---|---|
With 1,1,1-trioctyl-1-methylphosphonium methylcarbonate at 90℃; for 12h; | 95% |
2-methyl-2,4-pentanediol
4,4,6-trimethyl-2-phenyl-[1,3,2]dioxaborinane
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 95% |
With 1H-imidazole; iron(III) chloride In water; acetonitrile at 20℃; for 0.5h; Inert atmosphere; | 82% |
2-methyl-2,4-pentanediol
2-Methoxyphenylboronic acid
2-(2-methoxyphenyl)-4,4,6-trimethyl-1,3,2-dioxaborinane
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 16h; | 95% |
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
guinea pig | LD50 | oral | 2800mg/kg (2800mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC BEHAVIORAL: MUSCLE WEAKNESS LIVER: OTHER CHANGES | Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 4, Pg. 142, 1945. |
human | TCLo | inhalation | 50ppm/15M (50ppm) | SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 312, 1969. |
human | TCLo | inhalation | 50ppm (50ppm) | SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES | Journal of Industrial Hygiene and Toxicology. Vol. 28, Pg. 262, 1946. |
mouse | LD50 | intraperitoneal | 1299mg/kg (1299mg/kg) | Shell Chemical Company. Unpublished Report. Vol. -, Pg. 5, 1961. | |
mouse | LD50 | oral | 3097mg/kg (3097mg/kg) | Journal of the American Pharmaceutical Association, Scientific Edition. Vol. 45, Pg. 669, 1956. | |
rabbit | LD50 | oral | 3200mg/kg (3200mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC BEHAVIORAL: MUSCLE WEAKNESS LIVER: OTHER CHANGES | Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 4, Pg. 142, 1945. |
rabbit | LD50 | skin | 8560uL/kg (8.56mL/kg) | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 731, 1969. | |
rabbit | LD50 | subcutaneous | 13gm/kg (13000mg/kg) | SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE" | Food and Cosmetics Toxicology. Vol. 16, Pg. 777, 1978. |
rat | LC50 | inhalation | > 310mg/m3/1H (310mg/m3) | BIOFAX Industrial Bio-Test Laboratories, Inc., Data Sheets. Vol. 12-4/1970, | |
rat | LD50 | oral | 3700mg/kg (3700mg/kg) | Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. Vol. 1, Pg. 68, 1974. | |
rat | LDLo | intraperitoneal | 1500mg/kg (1500mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC GASTROINTESTINAL: OTHER CHANGES KIDNEY, URETER, AND BLADDER: RENAL FUNCTION TESTS DEPRESSED | Journal of Pharmacy and Pharmacology. Vol. 11, Pg. 150, 1959. |
Reported in EPA TSCA Inventory.
OSHA PEL: CL 25 ppm
ACGIH TLV: CL 25 ppm
DFG MAK: 10 ppm
The 2-Methyl-2,4-pentanediol, with the CAS registry number 107-41-5,is also known as 2-Methylpentan-2,4-diol; Hexylene glycol. It belongs to the product categories of Industrial/Fine Chemicals;White powder.Its EINECS number is 203-489-0. This chemical's molecular formula is C6H14O2 and molecular weight is 118.17. What's more,Its systematic name is 2-Methylpentane-2,4-diol.It is a Oily colorless liquid with a mild sweet odor which is stable,incompatible with strong oxidizing agents,strong acids,strong reducing agents.It is irritating to eyes and skin . When you use it ,wear suitable protective clothing .In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.And it is used as solvents, spices, medical disinfectants, fabrics penetration agent, paper and leather processing aid.
Physical properties about 2-Hydroxy-2-methylpropiophenone are:
(1)ACD/LogP: 0.004; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.00; (4)ACD/LogD (pH 7.4): 0.00; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)ACD/KOC (pH 5.5): 23.96; (8)ACD/KOC (pH 7.4): 23.96; (9)#H bond acceptors: 2; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 4; (12)Index of Refraction: 1.446; (13)Molar Refractivity: 32.84 cm3; (14)Molar Volume: 123.013 cm3; (15)Surface Tension: 33.8889999389648 dyne/cm; (16)Density: 0.961 g/cm3; (17)Flash Point: 93.889 °C; (18)Enthalpy of Vaporization: 50.464 kJ/mol; (19)Boiling Point: 197.499 °C at 760 mmHg; (20)Vapour Pressure: 0.096000000834465 mmHg at 25°C.
You can still convert the following datas into molecular structure:
(1)SMILES:CC(O)CC(C)(C)O;
(2)Std. InChI:InChI=1S/C6H14O2/c1-5(7)4-6(2,3)8/h5,7-8H,4H2,1-3H3;
(3)Std. InChIKey:SVTBMSDMJJWYQN-UHFFFAOYSA-N.
The toxicity data of 2-Methyl-2,4-pentanediol are as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
guinea pig | LD50 | oral | 2800mg/kg (2800mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC BEHAVIORAL: MUSCLE WEAKNESS LIVER: OTHER CHANGES | Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 4, Pg. 142, 1945. |
human | TCLo | inhalation | 50ppm/15M (50ppm) | LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 312, 1969. |
human | TCLo | inhalation | 50ppm (50ppm) | SENSE ORGANS AND SPECIAL SENSES: OTHER CHANGES: OLFACTION SENSE ORGANS AND SPECIAL SENSES: CONJUNCTIVE IRRITATION: EYE LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES | Journal of Industrial Hygiene and Toxicology. Vol. 28, Pg. 262, 1946. |
mouse | LD50 | intraperitoneal | 1299mg/kg (1299mg/kg) | Shell Chemical Company. Unpublished Report. Vol. -, Pg. 5, 1961. | |
mouse | LD50 | oral | 3097mg/kg (3097mg/kg) | Journal of the American Pharmaceutical Association, Scientific Edition. Vol. 45, Pg. 669, 1956. | |
rabbit | LD50 | oral | 3200mg/kg (3200mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC LIVER: OTHER CHANGES BEHAVIORAL: MUSCLE WEAKNESS | Federation Proceedings, Federation of American Societies for Experimental Biology. Vol. 4, Pg. 142, 1945. |
rabbit | LD50 | skin | 8560uL/kg (8.56mL/kg) | "Toxicology of Drugs and Chemicals," Deichmann, W.B., New York, Academic Press, Inc., 1969Vol. -, Pg. 731, 1969. | |
rabbit | LD50 | subcutaneous | 13gm/kg (13000mg/kg) | SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE" | Food and Cosmetics Toxicology. Vol. 16, Pg. 777, 1978. |
rat | LC50 | inhalation | > 310mg/m3/1H (310mg/m3) | BIOFAX Industrial Bio-Test Laboratories, Inc., Data Sheets. Vol. 12-4/1970, | |
rat | LD50 | oral | 3700mg/kg (3700mg/kg) | Raw Material Data Handbook, Vol.1: Organic Solvents, 1974. Vol. 1, Pg. 68, 1974. | |
rat | LDLo | intraperitoneal | 1500mg/kg (1500mg/kg) | BEHAVIORAL: GENERAL ANESTHETIC GASTROINTESTINAL: OTHER CHANGES KIDNEY, URETER, AND BLADDER: RENAL FUNCTION TESTS DEPRESSED | Journal of Pharmacy and Pharmacology. Vol. 11, Pg. 150, 1959. |
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