1-Benzyl-3-methyl-4-piperidon
di-tert-butyl dicarbonate
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
With hydrogen; palladium dihydroxide In ethyl acetate under 2068.65 Torr; for 24h; | 100% |
With hydrogen; palladium 10% on activated carbon In ethanol at 20℃; under 2585.81 Torr; for 4h; | 97% |
With hydrogen; palladium(II) hydroxide In methanol at 20℃; under 2844.39 Torr; | 95% |
N-tert-butyloxycarbonylpiperidin-4-one
methyl iodide
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: N-tert-butyloxycarbonylpiperidin-4-one With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.5h; Inert atmosphere; Stage #2: methyl iodide In tetrahydrofuran at -78 - 20℃; for 3h; | 45% |
Stage #1: N-tert-butyloxycarbonylpiperidin-4-one With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 1h; Inert atmosphere; Stage #2: methyl iodide In tetrahydrofuran at 20℃; for 3h; | 28% |
Stage #1: N-tert-butyloxycarbonylpiperidin-4-one With potassium hexamethylsilazane In tetrahydrofuran; toluene at 20℃; for 2h; Stage #2: methyl iodide In tetrahydrofuran; toluene at 20℃; | 22.5% |
Stage #1: N-tert-butyloxycarbonylpiperidin-4-one With sodium hydride In tetrahydrofuran; mineral oil at 20℃; Stage #2: methyl iodide In tetrahydrofuran; mineral oil | 16% |
Stage #1: N-tert-butyloxycarbonylpiperidin-4-one With sodium hydride In tetrahydrofuran at 20℃; for 0.5h; Stage #2: methyl iodide In tetrahydrofuran at 20℃; for 18h; | 10% |
3-methyl-4-piperidone
di-tert-butyl dicarbonate
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
With N,N-dimethylethylenediamine In dichloromethane at 20℃; for 2.5h; | |
With dmap; triethylamine In tetrahydrofuran; water at 20℃; for 18h; |
di-tert-butyl dicarbonate
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: 1-Benzyl-3-methyl-4-piperidon With hydrogenchloride; hydrogen; palladium dihydroxide In 1,4-dioxane; methanol under 2585.81 Torr; Stage #2: di-tert-butyl dicarbonate With triethylamine In tetrahydrofuran for 2h; |
di-tert-butyl dicarbonate
C14H23NO5
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: C14H23NO5 With hydrogenchloride In water for 48h; Reflux; Stage #2: di-tert-butyl dicarbonate With sodium carbonate In tetrahydrofuran; water |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
tert-Butyl 4-hydroxy-3-methylpiperidine-1-carboxylate
Conditions | Yield |
---|---|
With sodium tetrahydroborate In methanol at 0 - 20℃; for 3.5h; | 100% |
With methanol; sodium tetrahydroborate at 0 - 25℃; for 3.5h; | 100% |
With sodium tetrahydroborate In ethanol at 0℃; for 0.5h; | 88% |
N,N-phenylbistrifluoromethane-sulfonimide
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
3-methyl-4-trifluoromethanesulfonyloxy-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 1.5h; Stage #2: N,N-phenylbistrifluoromethane-sulfonimide In tetrahydrofuran at -78 - 25℃; for 2.5h; | 97% |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With sodium hexamethyldisilazane In tetrahydrofuran at -78℃; for 1.5h; Stage #2: N,N-phenylbistrifluoromethane-sulfonimide In tetrahydrofuran at 20℃; for 16h; | 78% |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran at -78℃; for 0.5h; Inert atmosphere; Stage #2: N,N-phenylbistrifluoromethane-sulfonimide In tetrahydrofuran at -78 - 0℃; for 1h; | 61% |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.666667h; Stage #2: N,N-phenylbistrifluoromethane-sulfonimide In tetrahydrofuran at -78 - 25℃; for 3h; | 198 mg |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran at -70℃; for 1h; Inert atmosphere; Stage #2: N,N-phenylbistrifluoromethane-sulfonimide In tetrahydrofuran at -70 - 0℃; for 4h; |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; (S)-2-(2-(methylsulfonyl)ethyl)pyrrolidine hydrochloride With sodium tris(acetoxy)borohydride In 1,2-dichloro-ethane at 20℃; for 6h; Stage #2: With hydrogenchloride In 1,4-dioxane; dichloromethane at 20℃; for 4h; | 96% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
diethyl {3-[(5-chloropyridin-2-yl)oxy]benzyl}phosphonate
Conditions | Yield |
---|---|
With potassium tert-butylate In tetrahydrofuran at 20℃; for 2h; | 90% |
With potassium tert-butylate In tetrahydrofuran at 20℃; for 2h; |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
2-(5-methoxy-2-nitrophenyl)-ethylamine
tert-butyl 4-[2-(5-methoxy-2-nitro-phenyl)-ethylamino]-3-methyl-piperidine-1-carboxylate
Conditions | Yield |
---|---|
With sodium tris(acetoxy)borohydride; acetic acid In dichloromethane at 20℃; for 3h; | 90% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
trimethylsulfoxonium iodide
Conditions | Yield |
---|---|
With potassium tert-butylate In 1,2-dimethoxyethane; dimethyl sulfoxide at 0 - 5℃; for 1h; | 90% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
phenylmagnesium bromide
Conditions | Yield |
---|---|
In tetrahydrofuran at 0 - 20℃; for 24h; | 84% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Methyltriphenylphosphonium bromide
tert-butyl 3-methyl-4-methylidenepiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: Methyltriphenylphosphonium bromide With n-butyllithium In tetrahydrofuran at 0℃; Stage #2: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate In tetrahydrofuran at 20℃; for 1h; | 83% |
Stage #1: Methyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20℃; for 0.5h; Inert atmosphere; Stage #2: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate In tetrahydrofuran at 20℃; for 18h; Inert atmosphere; | 60% |
With potassium tert-butylate In dimethyl sulfoxide at 20℃; for 16h; |
bromochlorobenzene
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: bromochlorobenzene With n-butyllithium In tetrahydrofuran; hexane at -78℃; Stage #2: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate In tetrahydrofuran; hexane at -78 - -20℃; Stage #3: With ammonium chloride In tetrahydrofuran; hexane; water | 83% |
Stage #1: bromochlorobenzene With n-butyllithium In tetrahydrofuran; hexanes at -78℃; for 0.75h; Stage #2: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate In tetrahydrofuran; hexanes at -78℃; for 2h; | 79% |
diethoxyphosphoryl-acetic acid ethyl ester
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
sodium methylate
4-methoxycarbonylmethylene-3-methylpiperidine-1-carboxylic acid t-butyl ester
Conditions | Yield |
---|---|
In tetrahydrofuran; methanol at 20℃; for 4h; | 82.5% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
tert-butyl 4-amino-3-methylpiperidine-1-carboxylate
Conditions | Yield |
---|---|
With ammonium formate; sodium cyanoborohydride In methanol at 30℃; for 16h; Temperature; Molecular sieve; | 80% |
With ammonium formate; sodium cyanoborohydride In methanol at 20℃; for 3h; Molecular sieve; | 60% |
With formic acid; ammonium formate; sodium cyanoborohydride In methanol at 20℃; for 2h; |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
2-[3-(diethoxyphosphorylmethyl)phenoxy]-5-(trifluoromethyl)pyridine
2-{3-[(3-methylpiperidin-4-ylidene)methyl]phenoxy}-5-(trifluoromethyl)pyridine
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; 2-[3-(diethoxyphosphorylmethyl)phenoxy]-5-(trifluoromethyl)pyridine With potassium tert-butylate In tetrahydrofuran at 20℃; for 1h; Stage #2: With trifluoroacetic acid In dichloromethane at 20℃; for 1h; | 79% |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; 2-[3-(diethoxyphosphorylmethyl)phenoxy]-5-(trifluoromethyl)pyridine With potassium tert-butylate In tetrahydrofuran at 20℃; for 1h; Stage #2: With trifluoroacetic acid In dichloromethane at 20℃; for 1h; | 79% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
3-methyl-4-piperidone
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With trifluoroacetic acid In dichloromethane at 20℃; for 1h; Stage #2: With water In dichloromethane; water | 75% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
trimethylsulfoxonium iodide
1,1-dimethylethyl 4-methyl-1-oxa-6-azaspiro[2.5]octane-6-carboxylate
Conditions | Yield |
---|---|
Stage #1: trimethylsulfoxonium iodide With sodium hydride In dimethyl sulfoxide; mineral oil at 0 - 20℃; for 2h; Stage #2: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate In dimethyl sulfoxide; mineral oil at 0 - 20℃; for 2h; | 75% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
methyl (S)-3-(pyrrolidin-2-yl)propanoate
Conditions | Yield |
---|---|
With sodium tris(acetoxy)borohydride; acetic acid In dichloromethane at 20℃; for 16h; | 75% |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; methyl (S)-3-(pyrrolidin-2-yl)propanoate In 1,2-dichloro-ethane at 20℃; for 0.5h; Stage #2: With sodium tris(acetoxy)borohydride In 1,2-dichloro-ethane at 20℃; | 37% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Diethyl 3-(5-bromopyridin-2-yloxy)benzylphosphonate
5-bromo-2-{3-[(3-methylpiperidin-4-ylidene)methyl]phenoxy}pyridine
Conditions | Yield |
---|---|
With potassium tert-butylate In tetrahydrofuran at 20℃; for 2h; | 72% |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; Diethyl 3-(5-bromopyridin-2-yloxy)benzylphosphonate With potassium tert-butylate In tetrahydrofuran at 20℃; for 2h; Stage #2: With trifluoroacetic acid In dichloromethane at 20℃; for 1h; | 72% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
benzyltriphenylphosphonium bromide
Conditions | Yield |
---|---|
Stage #1: benzyltriphenylphosphonium bromide With potassium tert-butylate In tetrahydrofuran at 20℃; for 1h; Stage #2: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate In tetrahydrofuran at 20℃; for 3h; | 63% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
2-propynamide
tert-butyl 8-methyl-2-oxo-1,2,7,8-tetrahydro-1,6-naphthyridine-6(5H)-carboxylate
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With pyrrolidine In toluene for 5h; Reflux; Stage #2: 2-propynamide In toluene Reflux; | 55% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
p-tolylsulfonylmethyl isocyanide
Conditions | Yield |
---|---|
With potassium tert-butylate In 1,2-dimethoxyethane at 0 - 25℃; for 16h; Inert atmosphere; | 50.4% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
N-(5-chloropyridin-2-yl)-1,1,1-trifluoro-N-[(trifluoromethyl)sulphonyl]methanesulphonamide
3-methyl-4-trifluoromethanesulfonyloxy-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With potassium hexamethylsilazane In tetrahydrofuran at -78 - 20℃; for 3.5h; Stage #2: N-(5-chloropyridin-2-yl)-1,1,1-trifluoro-N-[(trifluoromethyl)sulphonyl]methanesulphonamide In tetrahydrofuran at -78 - 20℃; | 47% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
oxalic acid diethyl ester
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 1h; Inert atmosphere; Stage #2: oxalic acid diethyl ester In tetrahydrofuran at 20℃; for 2h; | 45.6% |
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate With lithium hexamethyldisilazane In tetrahydrofuran at -60℃; for 0.5h; Stage #2: oxalic acid diethyl ester at -60 - 20℃; for 1h; |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; 2-iodo-1-(2,2,2-trifluoroethyl)-1H-indol-4-amine With chloro-trimethyl-silane In N,N-dimethyl-formamide at 0℃; for 2h; Stage #2: With borane-THF In N,N-dimethyl-formamide at 0 - 25℃; for 1h; Temperature; Reagent/catalyst; Inert atmosphere; | 45.28% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
(S)-1-Pyrrolidin-2-yl-methanol
Conditions | Yield |
---|---|
With sodium tris(acetoxy)borohydride In 1,2-dichloro-ethane at 20℃; for 16h; | 40% |
2-cyanomethylbenzothiazole
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
With morpholine; sulfur at 85℃; for 12h; | 39% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
N,N-dimethyl-formamide dimethyl acetal
tert-butyl 8-methyl-2-(methylthio)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; N,N-dimethyl-formamide dimethyl acetal at 80℃; for 12h; Stage #2: 2-methyl-2-thiopseudouronium sulfate With sodium ethanolate In ethanol at 80℃; for 12.5h; | 36% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
CYANAMID
C12H19N3O2S
Conditions | Yield |
---|---|
With pyridine; sulfur at 100℃; for 3h; | 31.3% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
Conditions | Yield |
---|---|
Stage #1: tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate; (S)-2-(pyrrolidin-2-yl)ethane-1-sulfonamide With sodium tris(acetoxy)borohydride In 1,2-dichloro-ethane at 20℃; for 16h; Stage #2: With trifluoroacetic acid In dichloromethane at 20℃; for 1h; | 22% |
tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate
(S)-1-phenyl-ethylamine
(3R,4R)-3-methyl-4-(1-(S)-phenyl-ethylamino)-piperidine-1-carboxylic acid tert-butyl ester
Conditions | Yield |
---|---|
With sodium triacetoxyborohydride In dichloromethane at 20℃; | 10% |
With sodium tris(acetoxy)borohydride In dichloromethane at 20℃; | 10% |
The CAS register number of 1-Piperidinecarboxylicacid, 3-methyl-4-oxo-, 1,1-dimethylethyl ester is 179898-50-1. It also can be called as 1-tert-Butoxycarbonyl-3-methyl-4-piperidone and the systematic name about this chemical is tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate. The molecular formula about this chemical is C11H19NO3 and the molecular weight is 213.27346. It belongs to the following product categorie which include pharmacetical.
Physical properties about 1-Piperidinecarboxylicacid, 3-methyl-4-oxo-, 1,1-dimethylethyl ester are: (1)ACD/LogP: 1.18; (2)ACD/LogD (pH 5.5): 1; (3)ACD/LogD (pH 7.4): 1; (4)ACD/BCF (pH 5.5): 3; (5)ACD/BCF (pH 7.4): 3; (6)ACD/KOC (pH 5.5): 71; (7)ACD/KOC (pH 7.4): 71; (8)#H bond acceptors: 4; (9)#Freely Rotating Bonds: 2; (10)Polar Surface Area: 46.61 Å2; (11)Index of Refraction: 1.471; (12)Molar Refractivity: 56.278 cm3; (13)Molar Volume: 201.187 cm3; (14)Polarizability: 22.311x10-24cm3; (15)Surface Tension: 35.848 dyne/cm; (16)Density: 1.06 g/cm3; (17)Flash Point: 134.485 °C; (18)Enthalpy of Vaporization: 53.87 kJ/mol; (19)Boiling Point: 298.758 °C at 760 mmHg; (20)Vapour Pressure: 0.001 mmHg at 25 °C.
You can still convert the following datas into molecular structure:
(1)SMILES: CC(C)(C)OC(=O)N1CCC(=O)C(C)C1
(2)InChI: InChI=1/C11H19NO3/c1-8-7-12(6-5-9(8)13)10(14)15-11(2,3)4/h8H,5-7H2,1-4H3
(3)InChIKey: VWSBNWIPICCWAM-UHFFFAOYAR
(4)Std. InChI: InChI=1S/C11H19NO3/c1-8-7-12(6-5-9(8)13)10(14)15-11(2,3)4/h8H,5-7H2,1-4H3
(5)Std. InChIKey: VWSBNWIPICCWAM-UHFFFAOYSA-N
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