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125700-67-6

Basic Information
CAS No.: 125700-67-6
Name: 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate
Article Data: 5
Molecular Structure:
Molecular Structure of 125700-67-6 (2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate)
Formula: C11H16N5O.BF4
Molecular Weight: 321.086
Synonyms: (1H-Benzotriazol-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate;Btttfb;Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, tetrafluoroborate(1-);O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate;
EINECS: 423-040-4
Melting Point: 205°C (dec.)(lit.)
Flash Point: STABILITY
Solubility: acetonitrile: 0.1 g/mL, clear
Appearance: white or off-white crystalline powder
Hazard Symbols: IrritantXi,FlammableF
Risk Codes: 36/37/38-5
Safety: 26-36-37/39-36/37/39
PSA: 46.19000
LogP: 1.34960
Synthetic route
150-75-4

N-methyl-p-aminophenol

164646-22-4

(R)-N2-[(4-amino-3,5-dichlorophenyl)sulphonyl]-N5-[amino(nitroimino)methyl]-ornithine

7087-68-5

N-ethyl-N,N-diisopropylamine

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

Conditions
ConditionsYield
58%
H-D-Arg(NO2)-OH

H-D-Arg(NO2)-OH

164648-71-9

(R)-N5-[amino(nitroimino)methyl]-N2-[(2-naphthyl)carbonyl]-ornithine

2243-83-6

2-naphthaloyl chloride

A

164647-69-2

(R)-N5-[Amino(nitroimino)methyl]-N-[(4-hydroxyphenyl)-methyl]-N2-(2-naphthoyl)-ornithinamide

B

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

Conditions
ConditionsYield
A n/a
B 36%
1871-76-7

diphenylacetic acid chloride

A

164644-76-2

(R,S)-N5-(Aminocarbonyl)-N2-(diphenylacetyl)-N-[(4-hydroxyphenyl)methyl]-ornithinamide

B

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

Conditions
ConditionsYield
A n/a
B 34%
56043-45-9, 13829-06-6

N,N,N',N'-tetramethylchlorformamidinium chloride

62244-77-3

1-Hydroxy-1,2,3-benzotriazole potassium salt

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

Conditions
ConditionsYield
With potassium chloride; potassium tetrafluoroborate
632-22-4

tetramethylurea

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: oxalyl chloride
2: KBF4,KCl
View Scheme
108-30-5

succinic acid anhydride

A

Mannose amine

B

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

Conditions
ConditionsYield
With dmap; benzotriazol-1-ol In ethyl acetate; N,N-dimethyl-formamide
123-75-1

pyrrolidine

68837-59-2

4-bromo-2-methylbenzoic acid

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

7087-68-5

N-ethyl-N,N-diisopropylamine

276678-35-4

(4-bromo-2-methylphenyl)(pyrrolidin-1-yl)methanone

Conditions
ConditionsYield
In tetrahydrofuran; water98%

6-{[6-(trifluoromethyl)pyridin-3-yl]oxy}quinoline-2-carboxylic acid

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

57260-71-6

1-t-Butoxycarbonylpiperazine

tert-butyl 4-[(6-{[6-(trifluoromethyl)pyridin-3-yl]oxy}quinolin-2-yl)carbonyl]piperazine-1-carboxylate

Conditions
ConditionsYield
With triethylamine In water; ethyl acetate; N,N-dimethyl-formamide97%
861359-74-2

diisopropylethyl amine

(L)-α-aspartyl-3-cyclohexyl-(L-alanineamide phenylmethyl ester trifluoroacetate

(L)-α-aspartyl-3-cyclohexyl-(L-alanineamide phenylmethyl ester trifluoroacetate

222640-99-5

N-ethyl-N-[1-oxo-4-[1-[(phenylmethoxy)carbonyl]-4-piperidinyl]butyl]glycine

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

N-[N-ethyl-N-[1-oxo-4-[1-[(phenylmethoxy)carbonyl]-4-piperidinyl]butyl]glycyl]-(L)-α-aspartyl-3-cyclohexyl-(L)-alanineamide phenylmethyl ester

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In N-methyl-acetamide; N,N-dimethyl-formamide95%
508-02-1

Oleanolic acid

125700-67-6

O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate

1596377-01-3

1-benzotriazolyl 3β-hydroxyolean-12-en-28-oate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 20℃; for 12h;95%
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 20℃; for 5h; Inert atmosphere;93%
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 20℃; for 5h; Inert atmosphere;93%
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    TBTU

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  • TBTU.99%

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    125700-67-6

    TBTU.99%

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Chemistry

IUPAC Name of TBTU (125700-67-6): [benzotriazol-1-yloxy(dimethylamino)methylidene]-dimethylazanium; boron(3+); tetrafluoride
Synonyms:O-Benzotriazol-1-yl-N,N,N',N'-tetramethyluronium tetrafluoroborate; 2-(1H-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate
Molecular Formula:  C11H16N5O.BF4
Molecular Weight : 321.08 g/mol
EINECS: 423-040-4
storage temp.: 2-8 °C
Melting point: 200 °C
solubility:acetonitrile: 0.1 g/mL, clear
Appearance: white or off-white crystalline powder
Following is the molecular structure of TBTU (125700-67-6):

Safety Profile

Safty informations about TBTU (125700-67-6):
Hazard Symbols:IrritantXi,FlammableF
Risk Codes  :
R36/37/38:Irritating to eyes, respiratory system and skin.
R5 :Heating may cause an explosion.
Safety Description  :
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
S37/39: Wear suitable gloves and eye/face protection.  
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
WGK Germany: 3
F: 8-10-21
Hazard Note: Irritant/Flammable