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inquiryAbout Product Technical Details L-Valine benzyl ester 4-toluenesulfonate Chemical Properties Melting point 160-162 °C alpha -
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inquiryName: L-Valinebenzylester4-toluenesulfonate. Synonym:BENZYLL-VALINATEP-TOLUENESULFONATE;H-VAL-OBZLP-TOSYLATE;H-VAL-OBZLTOS;H-VAL-OBZLTOS-OH;VALINE-OBZLP-TOSYLATE;L-VALLINEBENZYLESTERP-TOLUENESULFONATESALT;L-VALINEBENZYLESTER4-TOLUENESULFONATESALT
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inquirytoluene-4-sulfonic acid
(S)-2-(Benzhydrylidene-amino)-3-methyl-butyric acid benzyl ester
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
In water; acetonitrile Ambient temperature; | 99% |
L-valine
toluene-4-sulfonic acid
benzyl alcohol
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
In toluene for 5h; Reflux; | 91% |
In benzene Heating; | 90% |
In cyclohexane; water for 4h; Dean-Stark; Reflux; | 88% |
In benzene for 23h; Reflux; | |
In water; toluene for 24h; Reflux; Dean-Stark; |
L-Valine methyl ester
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 87 percent 2: 1) 20percent aq.NaOH, Bu4NHSO4 / 1) MeCN, r.t., 16 h, 2) CH2Cl2, r.t., 6 h 3: 99 percent / acetonitrile; H2O / Ambient temperature View Scheme |
Methyl N-(diphenylmethylene)-L-valinate
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1) 20percent aq.NaOH, Bu4NHSO4 / 1) MeCN, r.t., 16 h, 2) CH2Cl2, r.t., 6 h 2: 99 percent / acetonitrile; H2O / Ambient temperature View Scheme |
L-valine benzyl ester
toluene-4-sulfonic acid
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
In diethyl ether |
BOC-glycine
L-valine benzyl ester p-toluenesulfonate salt
N-t-butoxycarbonylglycyl-L-valine benzyl ester
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine | 100% |
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran at 0 - 20℃; for 12h; Inert atmosphere; | 94% |
With benzotriazol-1-ol; triethylamine; dicyclohexyl-carbodiimide In N,N-dimethyl-formamide 1.) 0 deg C, 2.) overnight, 4 deg C; | 89% |
With 4-methyl-morpholine; isobutyl chloroformate 1.) THF, -15 deg C, 2.) DMF, a) -15 deg C, 30 min, b) r.t., 30 min.; Yield given. Multistep reaction; |
t-Boc-L-valine
L-valine benzyl ester p-toluenesulfonate salt
(S)-benzyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3-methylbutanamido)-3-methylbutanoate
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine | 100% |
With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; | 99% |
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran at 0 - 20℃; for 12h; | 87% |
With triethylamine; dicyclohexyl-carbodiimide In N,N-dimethyl-formamide at 20℃; for 5h; | 26% |
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran at 0 - 20℃; for 12h; Inert atmosphere; |
L-N-Boc-Ala
L-valine benzyl ester p-toluenesulfonate salt
Boc-L-Ala-L-Val-OBzl
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine | 100% |
L-valine benzyl ester p-toluenesulfonate salt
4'-(bromomethyl)-1,1'-biphenyl-2-carbonitrile
(S)-2-[(2'-cyanobiphenyl-4-ylmethyl)amino]-3-methylbutyric acid benzyl ester hydrochloride
Conditions | Yield |
---|---|
Stage #1: L-valine benzyl ester p-toluenesulfonate salt With sodium hydroxide In 5,5-dimethyl-1,3-cyclohexadiene; water at 20℃; pH=< 8.5 - 9; Large scale; Stage #2: 4'-(bromomethyl)-1,1'-biphenyl-2-carbonitrile In 5,5-dimethyl-1,3-cyclohexadiene at 60℃; for 3.41667h; Large scale; Stage #3: With hydrogenchloride In 5,5-dimethyl-1,3-cyclohexadiene; water at 72℃; for 2h; Dean-Stark; Large scale; | 98% |
Stage #1: L-valine benzyl ester p-toluenesulfonate salt; 4'-(bromomethyl)-1,1'-biphenyl-2-carbonitrile With tetrabutylammomium bromide; potassium carbonate; potassium iodide In water; toluene at 50 - 55℃; for 25h; Stage #2: With hydrogenchloride In water; toluene pH=1 - 2; Product distribution / selectivity; | 90% |
Stage #1: L-valine benzyl ester p-toluenesulfonate salt; 4'-(bromomethyl)-1,1'-biphenyl-2-carbonitrile With tetrabutylammomium bromide; potassium carbonate; potassium iodide In water; toluene Stage #2: With hydrogenchloride In water; toluene pH=1 - 2; Product distribution / selectivity; | 90% |
L-valine benzyl ester p-toluenesulfonate salt
benzotriazol-1-ol
1-ethyl-3-(3-(dimethylammonio)propyl)carbodiimide perchlorate
citric acid
Boc-D-Leu-Val-OBn
Conditions | Yield |
---|---|
With triethylamine In dichloromethane; water | 97.8% |
L-valine benzyl ester p-toluenesulfonate salt
Boc-Val-OPyCl
(S)-benzyl 2-((S)-2-((tert-butoxycarbonyl)amino)-3-methylbutanamido)-3-methylbutanoate
Conditions | Yield |
---|---|
97% |
L-valine benzyl ester p-toluenesulfonate salt
1',3'-dohexadecyl N--L-glutamate
Conditions | Yield |
---|---|
With triethylamine In ethyl acetate for 24h; Ambient temperature; | 97% |
L-valine benzyl ester p-toluenesulfonate salt
benzoic acid anhydride
N-benzyl-L-valinol
Conditions | Yield |
---|---|
Stage #1: L-valine benzyl ester p-toluenesulfonate salt; benzoic acid anhydride With triethylamine In dichloromethane for 1h; Inert atmosphere; Stage #2: With lithium aluminium tetrahydride In tetrahydrofuran for 2.25h; Inert atmosphere; Reflux; | 97% |
N-(Phenylacetyl)-L-alanine
L-valine benzyl ester p-toluenesulfonate salt
N-(Phenylacetyl)-L-alanyl-L-valin-benzylester
Conditions | Yield |
---|---|
With N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline; N-ethyl-N,N-diisopropylamine In dichloromethane at 0℃; for 24h; | 96% |
L-valine benzyl ester p-toluenesulfonate salt
n-valeryl chloride
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 10℃; for 1.75h; | 96% |
L-valine benzyl ester p-toluenesulfonate salt
(S)-2-(benzyloxy)propanoic acid
(S)-benzyl 2-((S)-2-(benzyloxy)propanamido)-3-methylbutanoate
Conditions | Yield |
---|---|
With 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 0 - 20℃; | 95% |
L-valine benzyl ester p-toluenesulfonate salt
N-tert-butyloxycarbonyl di-L-tryptophan
Boc-Trp-Trp-Val-OBzl
Conditions | Yield |
---|---|
With 4-methyl-morpholine; benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; for 24h; pH=8; | 95% |
With 4-methyl-morpholine; benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0 - 20℃; for 26h; pH=8; | 95% |
L-valine benzyl ester p-toluenesulfonate salt
Boc-L-Abu(CN)ONSu
Boc-Abu(CN)-Val-OBzl
Conditions | Yield |
---|---|
With 4-methyl-morpholine In dichloromethane for 20h; Ambient temperature; | 94% |
9-(2-Propenyl)-9H-fluorene-9-carboxylic acid
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
With 4-methyl-morpholine; benzotriazol-1-ol; dicyclohexyl-carbodiimide In dichloromethane for 18h; Ambient temperature; | 94% |
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide | 93% |
N-Boc-D-Leu
L-valine benzyl ester p-toluenesulfonate salt
Boc-D-Leu-Val-OBn
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In dichloromethane at 0 - 20℃; for 6h; | 93% |
N-[2-chloro-9-(tetrahydropyran-2-yl)-9H-purin-6-yl]-N-cyclopropylglycine
L-valine benzyl ester p-toluenesulfonate salt
N-[2-chloro-9-(tetrahydropyran-2-yl)-9H-purin-6-yl]-N-cyclopropylglycyl-L-valine benzyl ester
Conditions | Yield |
---|---|
Stage #1: N-[2-chloro-9-(tetrahydropyran-2-yl)-9H-purin-6-yl]-N-cyclopropylglycine With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; Stage #2: L-valine benzyl ester p-toluenesulfonate salt With 4-methyl-morpholine In tetrahydrofuran at 20℃; for 0.333333h; pH=9; Stage #3: In tetrahydrofuran at 0 - 20℃; for 50h; | 93% |
9H-fluoren-9-ylmethyl (2-chloro-2-oxoethyl)carbamate
L-valine benzyl ester p-toluenesulfonate salt
Fmoc-Gly-Val-OBzl
Conditions | Yield |
---|---|
With 1-Hydroxy-1,2,3-benzotriazole potassium salt In dichloromethane for 0.5h; Ambient temperature; | 92% |
With silver cyanide; triethylamine In toluene at 60℃; 10-15 min; | 80% |
C22H19BrN4O
L-valine benzyl ester p-toluenesulfonate salt
C34H35N5O3
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 50℃; for 3h; Product distribution / selectivity; | 92% |
With N-ethyl-N,N-diisopropylamine In acetonitrile at 50℃; for 2h; |
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; triethylamine In dichloromethane; water at 20℃; for 2h; | 90.3% |
BOC-L-aspartic acid 4-benzyl ester
L-valine benzyl ester p-toluenesulfonate salt
Boc-Asp(OBzl)-Val-OBzl
Conditions | Yield |
---|---|
Stage #1: BOC-L-aspartic acid 4-benzyl ester With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; under 750.075 Torr; for 0.5h; Inert atmosphere; Stage #2: L-valine benzyl ester p-toluenesulfonate salt With 4-methyl-morpholine In tetrahydrofuran at 0 - 20℃; under 750.075 Torr; pH=8.5; Inert atmosphere; | 90% |
Stage #1: BOC-L-aspartic acid 4-benzyl ester With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; for 0.5h; Inert atmosphere; Stage #2: L-valine benzyl ester p-toluenesulfonate salt With 4-methyl-morpholine In tetrahydrofuran at 0 - 20℃; pH=8.5; Inert atmosphere; | 90% |
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine at 0 - 20℃; for 16h; Inert atmosphere; Green chemistry; | 70% |
N-tert-butoxycarbonyl-L-phenylalanine
L-valine benzyl ester p-toluenesulfonate salt
benzyl (tert-butoxycarbonyl)-L-phenylalanyl-L-valinate
Conditions | Yield |
---|---|
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran at 0 - 20℃; for 12h; Inert atmosphere; | 90% |
N-tert-butyloxycarbonyl-L-tert-leucine
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran at 0 - 20℃; for 12h; Inert atmosphere; | 90% |
L-valine benzyl ester p-toluenesulfonate salt
2-Bromoacetyl bromide
bromoacetyl valine benzyl ester
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran at 5℃; | 88% |
L-Lactic acid
L-valine benzyl ester p-toluenesulfonate salt
benzyl (2S)-2-{[(2S)-2-hydroxypropanoyl]amino}-3-methylbutanoate
Conditions | Yield |
---|---|
With benzotriazol-1-ol; triethylamine; diisopropyl-carbodiimide In dichloromethane at 0 - 20℃; | 88% |
pent-4-enoic acid
L-valine benzyl ester p-toluenesulfonate salt
Conditions | Yield |
---|---|
With 4-methyl-morpholine; benzotriazol-1-ol; dicyclohexyl-carbodiimide In dichloromethane for 18h; Ambient temperature; | 87% |
L-valine benzyl ester p-toluenesulfonate salt
(2S,3R)-3-[(tert-butoxycarbonyl) amino]-2-hydroxy-4-phenyl-butanoic acid
6-tert-butoxycarbonylamino-5-hydroxy-2-isopropyl-4-oxo-7-phenyl-3-azaheptanoic acid benzyl ester
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; for 12h; | 87% |
diethylphosphinic chloride
L-valine benzyl ester p-toluenesulfonate salt
Nα-diethylphosphinoylvaline benzyl ester
Conditions | Yield |
---|---|
With 4-methyl-morpholine In dichloromethane at 0℃; for 1h; | 86% |
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