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(R)-tert-Butyl 1-(benzylamino)-3-methoxy-1-oxopropan-2-ylcarbamate

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Name

(R)-tert-Butyl 1-(benzylamino)-3-methoxy-1-oxopropan-2-ylcarbamate

EINECS 1592732-453-0
CAS No. 880468-89-3 Density 1.103±0.06 g/cm3(Predicted)
PSA 76.66000 LogP 2.62430
Solubility N/A Melting Point 63-64 °C
Formula C16H24 N2 O4 Boiling Point 507.6±50.0 °C(Predicted)
Molecular Weight 308.378 Flash Point N/A
Transport Information N/A Appearance N/A
Safety Risk Codes N/A
Molecular Structure Molecular Structure of 880468-89-3 ((R)-tert-Butyl 1-(benzylamino)-3-methoxy-1-oxopropan-2-ylcarbamate) Hazard Symbols N/A
Synonyms

TERT-BUTYL N-[(1R)-1-(BENZYLCARBAMOYL)-2-METHOXYETHYL]CARBAMATE;(R)-TERT-BUTYL-1-(BENZYLAMINO)-3-METHOXY-1-OXOPROPAN-2-YLCARBAMATE;(R)-N-benzyl-2-N-Boc-amino-3-methoxypropionamide;

Article Data 26

(R)-tert-Butyl 1-(benzylamino)-3-methoxy-1-oxopropan-2-ylcarbamate Synthetic route

N-Boc-O-methyl-D-serine pivalic anhydride

100-46-9

benzylamine

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
In dichloromethane at 0 - 5℃; for 0.5h;100%
1253790-58-7

tert-butyl-N-[(1R)-2-(benzylamino)-1-(hydroxymethyl)-2-oxo-ethyl]carbamate

77-78-1

dimethyl sulfate

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
With tetrabutylammomium bromide; sodium hydroxide In water; toluene at 0 - 30℃; for 1.5h;96.28%
With sodium hydroxide; tetra(n-butyl)ammonium hydrogensulfate In dichloromethane; water at 4 - 25℃; Inert atmosphere;75.8%
Stage #1: tert-butyl-N-[(1R)-2-(benzylamino)-1-(hydroxymethyl)-2-oxo-ethyl]carbamate; dimethyl sulfate With tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide In dichloromethane; water at 4 - 25℃; Cooling with ice; Inert atmosphere;
Stage #2: With ammonium hydroxide In dichloromethane; water
75.8%

2,4-dioxo-3-azaspiro[5.5]undecan-3-yl N-(tert-butoxycarbonyl)-O-methyl-D-serinate

100-46-9

benzylamine

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
at 20℃; for 3h;90.4%
100-46-9

benzylamine

86123-95-7

(R)-2-((tert-butoxycarbonyl)amino)-3-methoxypropionic acid

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
Stage #1: (R)-2-((tert-butoxycarbonyl)amino)-3-methoxypropionic acid With 4-methyl-morpholine; isobutyl chloroformate In tetrahydrofuran at -78℃; Inert atmosphere;
Stage #2: benzylamine In tetrahydrofuran at -78 - 20℃; for 1h;
90%
With 4-methyl-morpholine; isobutyl chloroformate In tetrahydrofuran at -78 - 30℃; for 1h; Inert atmosphere;90%
Stage #1: (R)-2-((tert-butoxycarbonyl)amino)-3-methoxypropionic acid With 4-methyl-morpholine In tetrahydrofuran at -78℃; for 0.0833333h; Inert atmosphere;
Stage #2: benzylamine With isobutyl chloroformate In tetrahydrofuran at -78 - 20℃; for 1h; Inert atmosphere;
90%
1253790-58-7

tert-butyl-N-[(1R)-2-(benzylamino)-1-(hydroxymethyl)-2-oxo-ethyl]carbamate

420-37-1

trimethoxonium tetrafluoroborate

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
With N,N,N',N'-tetramethyl-1,8-diaminonaphthalene In dichloromethane at 20℃; for 16h; Inert atmosphere; Green chemistry;81%
1253790-58-7

tert-butyl-N-[(1R)-2-(benzylamino)-1-(hydroxymethyl)-2-oxo-ethyl]carbamate

80-48-8

methyl p-toluene sulfonate

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
With tetrabutylammomium bromide; potassium hydroxide In toluene at -1 - 2℃; Solvent; Reagent/catalyst; Temperature;80%
With tetrabutylammomium bromide; potassium hydroxide In water; toluene at 20℃; for 3h; Reagent/catalyst;60.97g
With tetrabutylammomium bromide; sodium hydroxide In water at 20℃; for 3h;38.5 g
With tetrabutylammomium bromide; sodium hydroxide In water; toluene at 20℃; for 3h;38.5 g
100-46-9

benzylamine

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: 4-methyl-morpholine; isobutyl chloroformate / dichloromethane / -5 °C
1.2: -5 - 0 °C
2.1: potassium hydroxide / dichloromethane / 5 °C
2.2: 5 °C
View Scheme
Multi-step reaction with 2 steps
1.1: methyl chloroformate; 4-methyl-morpholine / dichloromethane / 0.5 h / 35 °C
1.2: 20 °C
2.1: sodium hydroxide; tetrabutylammomium bromide / toluene; water / 2 - 27 °C
View Scheme
Multi-step reaction with 2 steps
1.1: isobutyl chloroformate; 4-methyl-morpholine / dichloromethane / 5 °C
1.2: 0 - 5 °C
2.1: potassium hydroxide / 5 °C
2.2: 5 °C
View Scheme
24424-99-5

di-tert-butyl dicarbonate

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: sodium hydroxide / water / 10 h / 20 - 25 °C
2.1: sodium hydroxide / water / 0.5 h / 0 - 5 °C
2.2: 14 h / 5 - 10 °C
2.3: 0 - 5 °C
3.1: chloroformic acid ethyl ester; 4-methyl-morpholine / dichloromethane / 0.25 h / -15 - -10 °C
3.2: 3 h / -15 - 25 °C
View Scheme
Multi-step reaction with 3 steps
1.1: sodium hydroxide / water
1.2: 16 h / 20 °C
1.3: pH 3.5 - 4
2.1: 4-methyl-morpholine; isobutyl chloroformate / dichloromethane / 1 h / -20 - 20 °C
3.1: sodium hydroxide / tetrabutylammomium bromide / dichloromethane; water / 2 h / 5 - 20 °C
View Scheme
Multi-step reaction with 3 steps
1.1: dmap; sodium hydroxide / water; tert-butyl alcohol / 11 h / 20 °C
2.1: sodium hydroxide; tetrabutylammomium bromide / dichloromethane / 0.5 h / 0 - 5 °C
2.2: 20 °C
3.1: 4-methyl-morpholine; isobutyl chloroformate / dichloromethane / -10 - -5 °C
3.2: 20 °C
View Scheme
880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: sodium hydroxide / water / 0.5 h / 0 - 5 °C
1.2: 14 h / 5 - 10 °C
1.3: 0 - 5 °C
2.1: chloroformic acid ethyl ester; 4-methyl-morpholine / dichloromethane / 0.25 h / -15 - -10 °C
2.2: 3 h / -15 - 25 °C
View Scheme
Multi-step reaction with 2 steps
1.1: 4-methyl-morpholine; isobutyl chloroformate / dichloromethane / -5 °C
1.2: -5 - 0 °C
2.1: potassium hydroxide / dichloromethane / 5 °C
2.2: 5 °C
View Scheme
Multi-step reaction with 2 steps
1: 4-methyl-morpholine; isobutyl chloroformate / dichloromethane / 1 h / -20 - 20 °C
2: sodium hydroxide / tetrabutylammomium bromide / dichloromethane; water / 2 h / 5 - 20 °C
View Scheme

tert-butyl [(2R)-1-hydroxy-3-methoxypropan-2-yl]carbamate

880468-89-3

tert-butyl [(2R)-1-(benzylamino)-3-methoxy-1-oxopropan-2-yl]carbamate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: sodium chlorite; sodium hypochlorite; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical / acetonitrile / 6 h / 35 °C / pH 6.7 / aq. phosphate buffer
2.1: 4-methyl-morpholine; isobutyl chloroformate / tetrahydrofuran / -78 °C / Inert atmosphere
2.2: 1 h / -78 - 20 °C
View Scheme
Multi-step reaction with 2 steps
1: sodium chlorite; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hypochlorite / acetonitrile; aq. phosphate buffer / 7 h / 35 °C / pH 6.7
2: 4-methyl-morpholine; isobutyl chloroformate / tetrahydrofuran / 1 h / -78 - 30 °C / Inert atmosphere
View Scheme
Multi-step reaction with 2 steps
1.1: potassium dihydrogenphosphate; sodium chlorite; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; sodium hypochlorite / acetonitrile / 3 h / 20 °C
2.1: 4-methyl-morpholine / tetrahydrofuran / 0.08 h / -78 °C / Inert atmosphere
2.2: 1 h / -78 - 20 °C / Inert atmosphere
View Scheme
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