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745979

Sigma-Aldrich

tBuBrettPhos Pd G3

96%

Synonyme(s) :

tert-BuBrettPhos-Pd-G3, [(2-Di-tert-butylphosphino-3,6-dimethoxy-2′,4′,6′-triisopropyl-1,1′-biphenyl)-2-(2′-amino-1,1′-biphenyl)]palladium(II) methanesulfonate

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About This Item

Formule empirique (notation de Hill):
C44H62NO5PPdS
Numéro CAS:
Poids moléculaire :
854.43
Numéro MDL:
Code UNSPSC :
12161600
ID de substance PubChem :
Nomenclature NACRES :
NA.22

Niveau de qualité

Pureté

96%

Forme

solid

Caractéristiques

generation 3

Pertinence de la réaction

core: palladium
reagent type: catalyst
reaction type: Cross Couplings

Capacité de réaction

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

Pf

119-131 °C

Groupe fonctionnel

phosphine

Chaîne SMILES 

COC1=CC=C(C(P(C(C)(C)C)C(C)(C)C)=C1C2=C(C=C(C=C2C(C)C)C(C)C)C(C)C)OC.NC3=C(C=CC=C3)C4=C(C=CC=C4)[Pd]OS(C)(=O)=O

InChI

1S/C31H49O2P.C12H10N.CH4O3S.Pd/c1-19(2)22-17-23(20(3)4)27(24(18-22)21(5)6)28-25(32-13)15-16-26(33-14)29(28)34(30(7,8)9)31(10,11)12;13-12-9-5-4-8-11(12)10-6-2-1-3-7-10;1-5(2,3)4;/h15-21H,1-14H3;1-6,8-9H,13H2;1H3,(H,2,3,4);/q;;;+1/p-1

Clé InChI

GAQPAUHHECNHNS-UHFFFAOYSA-M

Description générale

tBuBrettPhos Pd G3 is a third generation (G3) Buchwald precatalyst that can be used in cross-coupling reactions for the formation of C-C, C–N, C–O, C–F, C–CF3, and C–S bonds. It is air-, moisture-, and thermally-stable and is highly soluble in a wide range of common organic solvents. Some of its unique features include lower catalyst loadings, shorter reaction time, efficient formation of the active catalytic species and accurate control of ligand: palladium ratio.

Application

tBuBrettPhos Pd G3 has been used as a precatalyst for the N-arylation of amino acid esters with aryl triflates under mild reaction conditions and minimal racemization of the amino acid ester. It may also be used to catalyze the conversion of aryl halides to phenols in the presence of benzaldoxime as a hydroxide surrogate.

For small scale and high throughput uses, product is also available as ChemBeads (928313)

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

Hailey A Young et al.
The Journal of organic chemistry, 85(3), 1748-1755 (2019-12-04)
Palladium-catalyzed N-arylations of amino acid tert-butyl esters using 4-bromo-N,N-dimethylaniline as a coupling partner are reported. The resulting N-aryl amino acid esters are suitable building blocks for the synthesis of electron-rich N-aryl peptides, which undergo oxidative couplings to aminooxy groups to
Synthesis of Complex Phenols Enabled by a Rationally Designed Hydroxide Surrogate.
Fier PS & Maloney KM
Angewandte Chemie (International Edition in English), 56(16), 4478-4482 (2017)
Sandra M King et al.
Organic letters, 18(16), 4128-4131 (2016-08-09)
A general method for the N-arylation of amino acid esters with aryl triflates is described. Both α- and β-amino acid esters, including methyl, tert-butyl, and benzyl esters, are viable substrates. Reaction optimization was carried out by design of experiment (DOE)

Articles

G3 and G4 Buchwald palladium precatalysts are the newest air, moisture, and thermally stable crossing-coupling complexes used in bond formation for their versatility and high reactivity.

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