ChemicalBook > CAS DataBase List > tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate

tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate

Product Name
tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate
CAS No.
936694-19-8
Chemical Name
tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate
Synonyms
piperazine-1-carboxylate;t-Butyl 4-[[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl;4-(4-Boc-Piperazinomethyl)phenylboronic acid, pinacol ester;tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl);4-[(4-Boc-1-piperazinyl)methyl]phenylboronic Acid Pinacol Ester;tert-butyl 4-{[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl}piperazine-1-carboxylate;tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate;tert-Butyl 4-[[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl]piperazine-1-carboxylate;1-Piperazinecarboxylic acid, 4-[[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl]-, 1,1-dimethylethyl ester
CBNumber
CB12564598
Molecular Formula
C22H35BN2O4
Formula Weight
402.34
MOL File
936694-19-8.mol
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tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate Property

Melting point:
125-130 °C
Boiling point:
486.5±45.0 °C(Predicted)
Density 
1.10±0.1 g/cm3(Predicted)
storage temp. 
under inert gas (nitrogen or Argon) at 2-8°C
pka
6.31±0.10(Predicted)
Appearance
White to off-white Solid
CAS DataBase Reference
936694-19-8
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Safety

HS Code 
2933998090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

TRC
Product number
B661958
Product name
4-(4-Boc-Piperazinomethyl)phenylboronicacid,pinacolester
Packaging
250mg
Price
$55
Updated
2021/12/16
American Custom Chemicals Corporation
Product number
BOR0002840
Product name
4-(4-BOC-PIPERAZINEMETHYL)PHENYLBORONIC ACID PINACOL ESTER
Purity
95.00%
Packaging
1G
Price
$198.45
Updated
2021/12/16
Matrix Scientific
Product number
091484
Product name
tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate
Purity
95+%
Packaging
1g
Price
$227
Updated
2021/12/16
Apolloscientific
Product number
OR303445
Product name
4-((4-Boc-piperazine)methyl)phenylboronicacidpinacolester
Packaging
500mg
Price
$116
Updated
2021/12/16
SynQuest Laboratories
Product number
8H60-1-FC
Product name
4-((4-Boc-piperazine)methyl) phenylboronic acid pinacol ester
Packaging
500mg
Price
$128
Updated
2021/12/16
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tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate Chemical Properties,Usage,Production

Synthesis

844891-10-7

73183-34-3

936694-19-8

Step II: Synthesis of tert-butyl 4-[[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl]piperazine-1-carboxylate (V-1). Under argon protection, tert-butyl 4-(4-bromobenzyl)piperazine-1-carboxylate (7.5 g, 21.1 mmol), pinacol ester of bis(boronic acid) (8 g, 31.7 mmol) and potassium acetate (4.1 g, 42.2 mmol) were dissolved in DMSO (50 mL). Subsequently [1,1'-bis(diphenylphosphino)ferrocene]palladium(II) dichloride (0.77 g, 1.06 mmol) was added. The reaction mixture was stirred at 90 °C for 16 hours. The reaction progress was monitored by TLC. Upon completion of the reaction, water (100 mL) was added to the mixture and the product was extracted with ethyl acetate (50 mL x 3). The organic phases were combined, washed sequentially with water (100 mL) and brine (100 mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The crude product was purified by silica gel column chromatography (eluent: 2-20% methanol gradient in dichloromethane) to afford the target compound 4-(4-Boc-piperazinylmethyl)phenylboronic acid pinacol ester V-1 (7 g, 82% yield).LCMS: m/z 403.3 ([M+H]+).

References

[1] Patent: WO2013/157022, 2013, A1. Location in patent: Page/Page column 54-55
[2] Patent: US2015/64196, 2015, A1. Location in patent: Paragraph 0177

tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate Preparation Products And Raw materials

Raw materials

Preparation Products

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tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate Suppliers

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936694-19-8, tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylateRelated Search:


  • tert-Butyl 4-[[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl]piperazine-1-carboxylate
  • piperazine-1-carboxylate
  • tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)
  • 4-(4-Boc-Piperazinomethyl)phenylboronic acid, pinacol ester
  • tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)piperazine-1-carboxylate
  • 4-[(4-Boc-1-piperazinyl)methyl]phenylboronic Acid Pinacol Ester
  • tert-butyl 4-{[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl}piperazine-1-carboxylate
  • t-Butyl 4-[[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl
  • 1-Piperazinecarboxylic acid, 4-[[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]methyl]-, 1,1-dimethylethyl ester
  • 936694-19-8