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CAS No.: 32005-36-0

Synonyms: Bis(dibenzylideneacetone)palladium

4.5 *For research use only!

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Quality Control of [ 32005-36-0 ] Purity: 98% SDS Specification

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Product Citations

Palladium-catalyzed dearomative 1, 4-hydroamination

Gilbert, Robert ; Davis, Christopher W ; Bingham, Tanner W , et al. Tetrahedron,2024,134135.

DOI: 10.1016/j.tet.2024.134135

Abstract: A dearomative 1,4-hydroamination of nonactivated arenes has been developed, using a key arene-arenophile photocycloaddition strategy to disrupt aromaticity. Palladium catalysis with K-Selectride? as a hydride source uniquely enables selective reactivity and provides access to a range of substituted 1,4-cyclohexadienes from aromatic starting materials. We demonstrate a few synthetic applications of this scalable procedure by preparing highly-functionalized small molecules in three to four steps from naphthalene.

Keywords: Dearomatization ; Hydroamination ; Arenophiles ; Palladium ; Catalysis

Purchased from AmBeed: 32005-36-0 ; 657408-07-6 ; 787618-22-8 ; 213697-53-1 ; 12150-46-8

Product Details of [ 32005-36-0 ]

CAS No. :	32005-36-0
Formula :	C₃₄H₂₈O₂Pd
Linear Structure Formula :	Pd·2C₆H₅CHCHC(O)CHCHC₆H₅
M.W :	575.01
Synonyms :	Bis(dibenzylideneacetone)palladium
MDL No. :	MFCD00051942

Safety of [ 32005-36-0 ]

GHS Pictogram:
Signal Word:	Warning
Hazard Statements:	H317
Precautionary Statements:	P261-P272-P280-P302+P352-P333+P313-P363-P403-P501

Calculated chemistry of [ 32005-36-0 ] Show Less

Physicochemical Properties

Num. heavy atoms	37
Num. arom. heavy atoms	24
Fraction Csp3	0.0
Num. rotatable bonds	8
Num. H-bond acceptors	2.0
Num. H-bond donors	0.0
Molar Refractivity	151.92
TPSA ? Topological Polar Surface Area: Calculated from Ertl P. et al. 2000 J. Med. Chem.	34.14 ?2

Lipophilicity

Log P_o/w (iLOGP)? iLOGP: in-house physics-based method implemented from Daina A et al. 2014 J. Chem. Inf. Model.	0.0
Log P_o/w (XLOGP3)? XLOGP3: Atomistic and knowledge-based method calculated by XLOGP program, version 3.2.2, courtesy of CCBG, Shanghai Institute of Organic Chemistry	8.23
Log P_o/w (WLOGP)? WLOGP: Atomistic method implemented from Wildman SA and Crippen GM. 1999 J. Chem. Inf. Model.	7.53
Log P_o/w (MLOGP)? MLOGP: Topological method implemented from Moriguchi I. et al. 1992 Chem. Pharm. Bull. Moriguchi I. et al. 1994 Chem. Pharm. Bull. Lipinski PA. et al. 2001 Adv. Drug. Deliv. Rev.	5.82
Log P_o/w (SILICOS-IT)? SILICOS-IT: Hybrid fragmental/topological method calculated by FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com	4.51
Consensus Log P_o/w? Consensus Log P_o/w: Average of all five predictions	5.22

Water Solubility

Log S (ESOL):? ESOL: Topological method implemented from Delaney JS. 2004 J. Chem. Inf. Model.	-8.54
Solubility	0.00000165 mg/ml ; 0.0000000029 mol/l
Class? Solubility class: Log S scale Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly	Poorly soluble
Log S (Ali)? Ali: Topological method implemented from Ali J. et al. 2012 J. Chem. Inf. Model.	-8.81
Solubility	0.000000894 mg/ml ; 0.0000000016 mol/l
Class? Solubility class: Log S scale Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly	Poorly soluble
Log S (SILICOS-IT)? SILICOS-IT: Fragmental method calculated by FILTER-IT program, version 1.0.2, courtesy of SILICOS-IT, http://www.silicos-it.com	-5.05
Solubility	0.00514 mg/ml ; 0.00000893 mol/l
Class? Solubility class: Log S scale Insoluble < -10 < Poorly < -6 < Moderately < -4 < Soluble < -2 Very < 0 < Highly	Moderately soluble

Pharmacokinetics

GI absorption? Gatrointestinal absorption: according to the white of the BOILED-Egg	Low
BBB permeant? BBB permeation: according to the yolk of the BOILED-Egg	No
P-gp substrate? P-glycoprotein substrate: SVM model built on 1033 molecules (training set) and tested on 415 molecules (test set) 10-fold CV: ACC=0.72 / AUC=0.77 External: ACC=0.88 / AUC=0.94	Yes
CYP1A2 inhibitor? Cytochrome P450 1A2 inhibitor: SVM model built on 9145 molecules (training set) and tested on 3000 molecules (test set) 10-fold CV: ACC=0.83 / AUC=0.90 External: ACC=0.84 / AUC=0.91	No
CYP2C19 inhibitor? Cytochrome P450 2C19 inhibitor: SVM model built on 9272 molecules (training set) and tested on 3000 molecules (test set) 10-fold CV: ACC=0.80 / AUC=0.86 External: ACC=0.80 / AUC=0.87	No
CYP2C9 inhibitor? Cytochrome P450 2C9 inhibitor: SVM model built on 5940 molecules (training set) and tested on 2075 molecules (test set) 10-fold CV: ACC=0.78 / AUC=0.85 External: ACC=0.71 / AUC=0.81	Yes
CYP2D6 inhibitor? Cytochrome P450 2D6 inhibitor: SVM model built on 3664 molecules (training set) and tested on 1068 molecules (test set) 10-fold CV: ACC=0.79 / AUC=0.85 External: ACC=0.81 / AUC=0.87	No
CYP3A4 inhibitor? Cytochrome P450 3A4 inhibitor: SVM model built on 7518 molecules (training set) and tested on 2579 molecules (test set) 10-fold CV: ACC=0.77 / AUC=0.85 External: ACC=0.78 / AUC=0.86	No
Log Kp (skin permeation)? Skin permeation: QSPR model implemented from Potts RO and Guy RH. 1992 Pharm. Res.	-3.96 cm/s

Druglikeness

Lipinski? Lipinski (Pfizer) filter: implemented from Lipinski CA. et al. 2001 Adv. Drug Deliv. Rev. MW ≤ 500 MLOGP ≤ 4.15 N or O ≤ 10 NH or OH ≤ 5	2.0
Ghose? Ghose filter: implemented from Ghose AK. et al. 1999 J. Comb. Chem. 160 ≤ MW ≤ 480 -0.4 ≤ WLOGP ≤ 5.6 40 ≤ MR ≤ 130 20 ≤ atoms ≤ 70	None
Veber? Veber (GSK) filter: implemented from Veber DF. et al. 2002 J. Med. Chem. Rotatable bonds ≤ 10 TPSA ≤ 140	0.0
Egan? Egan (Pharmacia) filter: implemented from Egan WJ. et al. 2000 J. Med. Chem. WLOGP ≤ 5.88 TPSA ≤ 131.6	1.0
Muegge? Muegge (Bayer) filter: implemented from Muegge I. et al. 2001 J. Med. Chem. 200 ≤ MW ≤ 600 -2 ≤ XLOGP ≤ 5 TPSA ≤ 150 Num. rings ≤ 7 Num. carbon > 4 Num. heteroatoms > 1 Num. rotatable bonds ≤ 15 H-bond acc. ≤ 10 H-bond don. ≤ 5	1.0
Bioavailability Score? Abbott Bioavailability Score: Probability of F > 10% in rat implemented from Martin YC. 2005 J. Med. Chem.	0.17

Medicinal Chemistry

PAINS? Pan Assay Interference Structures: implemented from Baell JB. & Holloway GA. 2010 J. Med. Chem.	0.0 alert
Brenk? Structural Alert: implemented from Brenk R. et al. 2008 ChemMedChem	1.0 alert: heavy_metal
Leadlikeness? Leadlikeness: implemented from Teague SJ. 1999 Angew. Chem. Int. Ed. 250 ≤ MW ≤ 350 XLOGP ≤ 3.5 Num. rotatable bonds ≤ 7	No; 1 violation:MW<3.0
Synthetic accessibility? Synthetic accessibility score: from 1 (very easy) to 10 (very difficult) based on 1024 fragmental contributions (FP2) modulated by size and complexity penaties, trained on 12'782'590 molecules and tested on 40 external molecules (r² = 0.94)	3.68

Application In Synthesis [ 32005-36-0 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

Downstream synthetic route of [ 32005-36-0 ]

[ 32005-36-0 ] Synthesis Path-Downstream 1~12

1
[ 52333-42-3 ]
[ 4542-61-4 ]
[ 144-55-8 ]
[ 32005-36-0 ]
[ 397325-35-8 ]

Yield	Reaction Conditions	Operation in experiment
60%	With caesium carbonate; triphenylphosphine; In 1,4-dioxane;	Example 105 Under nitrogen atmosphere, to a mixture of <strong>[52333-42-3]7-bromopyrido[2,3-b]pyrazine</strong> (300 mg), methyl boronate (100 mg) and cesium carbonate (930 mg) were added dioxane (7.0 ml), bis(dibenzilidenacetone)-palladium (80.0 mg) and triphenylphosphine (87.0 mg), and the mixture was stirred at 100 C. for 2.5 hours. To the reaction solution was added a saturated aqueous sodium hydrogen carbonate solution, and the mixture was extracted three times with ethyl acetate. The extracts were combined, washed with a saturated brine, dried over magnesium sulfate, and filtered. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column (hexane/ethyl acetate=3/1?1/1?0/1?ethyl acetate/ethanol=10/1) to give 7-methyl-pyrido[2,3-b]pyrazine (125 mg, 60%). 1H NMR (CDCl3, 400 MHz) delta 9.06 (d, 1H, J=2.3 Hz), 9.02 (d, 1H, J=1.7 Hz), 8.91 (d, 1H, J=1.7 Hz), 8.24 (d, 1H, J=2.3 Hz), 2.65 (s, 3H).

Reference： [1]Patent: US2003/181496,2003,A1

2
[ 97239-80-0 ]
[ 696-63-9 ]
[ 32005-36-0 ]
[ 1154043-13-6 ]

Reference： [1]Journal of the American Chemical Society,2009,vol. 131,p. 7858 - 7868

3
[ 97239-80-0 ]
[ 32005-36-0 ]
[Pd(1,1'-bis(diisopropylphosphino)ferrocene)]2(μ2,η2-dibenzylideneacetone) [ No CAS ]

Reference： [1]Journal of the American Chemical Society,2009,vol. 131,p. 7858 - 7868

4
[ 591-50-4 ]
[ 117408-98-7 ]
[ 32005-36-0 ]
C₁₈H₂₁IN₂OPd [ No CAS ]