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Recycling the versatile Pipecolic linker.

Pawel Zajdel1, Nicolas Masurier, Pierre Sanchez

  • 1IBMM, Institut des Biomolécules Max Mousseron, UMR 5247, Universités Montpellier I and II, CNRS, Faculté de Pharmacie, 15 av. C. Flahault, BP 14491, 34093 Montpellier Cedex 05, France.

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|August 19, 2010
PubMed
Summary
This summary is machine-generated.

The novel pipecolic linker enables efficient immobilization and release of compounds on solid supports. This versatile linker can be recycled up to five times after trifluoroacetic acid cleavage without losing loading capacity.

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Area of Science:

  • Organic Chemistry
  • Solid-Phase Synthesis

Background:

  • The pipecolic linker is a versatile tool for immobilizing various molecules onto solid supports.
  • Efficient compound release and linker purification are crucial in solid-phase synthesis.

Purpose of the Study:

  • To investigate the recyclability of the pipecolic resin after cleavage with trifluoroacetic acid (TFA) cocktails.
  • To assess the impact of recycling on the linker's loading capacity and efficiency.

Main Methods:

  • Immobilization of amines, alcohols, and hydrazines onto pipecolic resin.
  • Cleavage of immobilized compounds using various trifluoroacetic acid (TFA) cocktails.
  • Analysis of compound purity and resin loading capacity after multiple cleavage and recycling cycles.

Main Results:

  • The pipecolic linker demonstrated efficient anchoring and high-purity compound release via an oxazolonium intermediate.
  • The pipecolic resin could be successfully recycled up to five times.
  • No significant decrease in loading capacity was observed after five recycling cycles.

Conclusions:

  • The pipecolic resin is a robust and recyclable solid support for organic synthesis.
  • Recycling the pipecolic resin offers a cost-effective and sustainable approach to solid-phase synthesis.
  • The linker's stability under acidic conditions ensures its reusability without compromising synthetic outcomes.