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    BEP

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      BEP

      SKU
      B0040

      Category: Building Blocks, Intermediates, Reagents

      Synonyms
      2-Bromo-1-ethyl-pyridinium tetrafluoroborate
      878-23-9
      CAS-Number
      C7H9BrNBF4
      Molecular Formula
      273.86
      Molecular Weight

      • Product Data
      • Handling
      • Safety Information
      • Details

      Specifications

      Purity
      ≥97% (Titration)
      Identity
      1H-NMR
      Appearance
      White powder

      Properties

      Melting Point
      102-104 °C
      Solvents
      water
      Shipping
      AMBIENT
      Use / Stability
      Stable for at least 2 years after receipt when stored at -20°C.
      Handling Advice
      Protect from light and moisture.
      Long Term Storage
      -20°C
      Short Term Storage
      +4°C
      Transportation
      Not dangerous goods
      Description
      Efficient coupling reagent for the synthesis of sterically hindered amides, especially peptides. In terms of reactivity and racemization-suppressing capability, this pyridinium-type reagent, BEP, proved to be more efficient than commonly used uronium- and phosphonium-type reagents, such as HBTU, BOP, and PyBroP, for the synthesis of hindered peptides containing N-methylated or C?,C?-dialkylated amino acid residues. BEP was also proven to be an efficient reagent for the synthesis of esters, especially active esters and hindered esters, and tert-butyl esters.
      InChi
      InChI=1S/C7H9BrN.BF4/c1-2-9-6-4-3-5-7(9)8
      InChi Key
      YJDXVQLBIAJTHP-UHFFFAOYSA-N
      Smiles
      CC[N]1=C(Br)C=CC=C1.FB(F)F.[F-]

      Efficient coupling reagent for the synthesis of sterically hindered amides, especially peptides. In terms of reactivity and racemization-suppressing capability, this pyridinium-type reagent, BEP, proved to be more efficient than commonly used uronium- and phosphonium-type reagents, such as HBTU, BOP, and PyBroP, for the synthesis of hindered peptides containing N-methylated or C?,C?-dialkylated amino acid residues. BEP was also proven to be an efficient reagent for the synthesis of esters, especially active esters and hindered esters, and tert-butyl esters.

      SKU: B0040 Category: Building Blocks, Intermediates, Reagents
      • Additional information

      Additional information

      Synonyms

      2-Bromo-1-ethyl-pyridinium tetrafluoroborate

      Purity

      ≥97% (Titration)

      Appearance

      White powder

      CAS-Number

      878-23-9

      Molecular Formula

      C7H9BrNBF4

      Molecular Weight

      273.86

      Identity

      1H-NMR

      Solvents

      water

      Melting Point

      102-104 °C

      Smiles

      CC[N]1=C(Br)C=CC=C1.FB(F)F.[F-]

      InChi Key

      YJDXVQLBIAJTHP-UHFFFAOYSA-N

      Shipping

      AMBIENT

      Short Term Storage

      +4°C

      Long Term Storage

      -20°C

      Handling Advice

      Protect from light and moisture.

      Use / Stability

      Stable for at least 2 years after receipt when stored at -20°C.

      Transportation

      Not dangerous goods

      InChi

      InChI=1S/C7H9BrN.BF4/c1-2-9-6-4-3-5-7(9)8

      Quantity

      1 g, 5 g, 25 g, Bulk

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