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900533

Sigma-Aldrich

(t-Bu)PhCPhos Pd G4

95%

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About This Item

Empirical Formula (Hill Notation):
C40H48N3O3PPdS
CAS Number:
2896826-14-3
Molecular Weight:
788.29
UNSPSC Code:
12161600
NACRES:
NA.22

Quality Level

100

Assay

95%

form

powder or crystals

feature

generation 4

reaction suitability

core: palladium
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

functional group

phosphine

SMILES string

O=S(=O)([O-][Pd+2]1([C-]=2C=CC=CC2C=3C=CC=CC3[NH]1C)[P](C=4C=CC=CC4)(C5=CC=CC=C5C=6C(=CC=CC6N(C)C)N(C)C)C(C)(C)C)C

InChI

InChI=1S/C26H33N2P.C13H12N.CH4O3S.Pd/c1-26(2,3)29(20-14-9-8-10-15-20)24-19-12-11-16-21(24)25-22(27(4)5)17-13-18-23(25)28(6)7;1-14-13-10-6-5-9-12(13)11-7-3-2-4-8-11;1-5(2,3)4;/h8-19H,1-7H3;2-7,9-10,14H,1H3;1H3,(H,2,3,4);/q;-1;;+2/p-1

Related Categories

Application

A fourth generation (G4) Buchwald precatalyst that is similar to the third generation (G3) precatalysts except that the amino group on the biphenyl backbone is methylated. This modification helps to prevent the limitations found when using the third generation precatalysts. It is air, moisture, and thermally-stable and shows good solubility in common organic solvents.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Nathaniel H Park et al.
Angewandte Chemie (International ed. in English), 54(28), 8259-8262 (2015-06-03)
In Pd-catalyzed C-N cross-coupling reactions, α-branched secondary amines are difficult coupling partners and the desired products are often produced in low yields. In order to provide a robust method for accessing N-aryl α-branched tertiary amines, new catalysts have been designed

Articles

G3 and G4 Buchwald Precatalysts

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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