756482 Sigma-Aldrich

P(t-Bu)3 Pd G2

Synonym: Chloro[(tri-tert-butylphosphine)-2-(2-aminobiphenyl)] palladium(II)

  • CAS Number 1375325-71-5

  • Empirical Formula (Hill Notation) C24H37ClNPPd

  • Molecular Weight 512.40

  •  MDL number MFCD21608496

  •  PubChem Substance ID 329766544

  •  NACRES NA.22



Related Categories Buchwald 2nd Generation Palladacycles, Buchwald Ligands and Complexes, Catalysis and Inorganic Chemistry, Chemical Synthesis, Cross-Coupling,
Quality Level   100
mp   167-170 °C (decomposition)
functional group   phosphine
reaction suitability   reaction type: Buchwald-Hartwig Cross Coupling Reaction
  reaction type: Heck Reaction
  reaction type: Hiyama Coupling
  reaction type: Negishi Coupling
  reaction type: Sonogashira Coupling
  reaction type: Stille Coupling
  reaction type: Suzuki-Miyaura Coupling
  reagent type: catalyst
reaction type: Cross Couplings
SMILES string   NC1=C(C2=CC=CC=C2[Pd]Cl)C=CC=C1.CC(C)(C)P(C(C)(C)C)C(C)(C)C
InChI   1S/C12H10N.C12H27P.ClH.Pd/c13-12-9-5-4-8-11(12)10-6-2-1-3-7-10;1-10(2,3)13(11(4,5)6)12(7,8)9;;/h1-6,8-9H,13H2;1-9H3;1H;/q;;;+1/p-1


General description

P(t-Bu)3 Pd G2 (Chloro[(tri-tert-butylphosphine)-2-(2-aminobiphenyl)] palladium(II)) is a second generation (G2) precatalyst containing a biphenyl-based ligand. Product participates in various palladium catalyzed cross-coupling reactions, C-C, C-N and C-O bond formation reactions, and Suzuki-Miyaura coupling reactions. It generates active Pd catalyst at room temperature in the presence of weak phosphate or carbonate bases. It has been proposed as an active catalyst for use in Stille reactions of aryl halides (bromides and chlorides).


P(t-Bu)3 Pd G2 (Chloro[(tri-tert-butylphosphine)-2-(2-aminobiphenyl)] palladium(II), Pd/P(t-Bu)3) may be used as catalyst in the following studies:
• Synthesis of sterically hindered biaryls (tetra-ortho-substituted), via cross-coupling reactions of aryl chlorides.
• Stille cross-couplings reactions of aryl chloride.
• Synthesis of chloropeptin I, via Stille cross-coupling reaction.
• Heck reaction.
• Negishi cross-coupling reactions.


2, 5 g in glass bottle

250, 500 mg in glass bottle

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Protocols & Articles


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The screening sets come pre-loaded with 1 µmol of catalyst in each vial according to the following design.
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Stephen Buchwald Group – Professor Product Portal

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