Category: 6163-58-2

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6163-58-2,Tri-o-tolylphosphine,as a common compound, the synthetic route is as follows.

6163-58-2, Preparation One N-(5-Vinyl-pyridin-2-yl)-acetamide. A solution of N-(5-bromo-pyridin-2-yl)-acetamide (4.30 g, 20 mmol) in acetonitrile (15 ml) and triethylamine (5.04 ml) was treated with palladium acetate (45 mg, 0.2 mmol) and tri-o-tolylphosphine (203 mg, 0.66 mmol). The mixture was placed in a pressure reactor under 50 psig of ethylene pressure and heated at 85C for 66 hours. The reaction mixture was cooled, vented, and partitioned between phosphate buffer (0.1 M, pH 6.6) and ethyl acetate. The aqueous phase was extracted with ethyl acetate twice more. The combined ethyl acetate extracts were washed with additional phosphate buffer, brine and dried over sodium sulfate. The extracts were filtered and evaporated to afford 2.06 g (63%) of the title product as a flaky crystalline residue. Recrystallization from ethyl acetate/cyclohexane gave colorless flakes. mp 120 – 121 C 1H NMR (CDCl3): delta = 8.55 (br, 1 H); 8.24 (d, 1 H); 8.15 (d, 1 H); 7.76 (d of d, 1H); 6.64 (d of d, 1 H); 5.73 (d, 1 H); 5.28 (d, 1 H); 2.19 (s, 3 H). MS (Cl): m/z= 163 (M+H+).

The synthetic route of 6163-58-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; Pfizer Products Inc.; EP994105; (2000); A2;,
Phosphine ligand
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6163-58-2,Tri-o-tolylphosphine,as a common compound, the synthetic route is as follows.

N-(5-Vinyl-pyridin-2-yl)-acetamide A solution of of N-(5-bromo-pyridin-2-yl)-acetamide (4.30 g, 20 mmol) in acetonitrile (15 ml) and triethylamine (5.04 ml) was treated with palladium acetate (45 mg, 0.2 mmol) and tri-o-tolylphosphine (203 mg, 0.66 mmol). The mixture was placed in a pressure reactor under 50 psig of ethylene pressure and heated at 85 C. for 66 hours. The reaction mixture was cooled, vented, and partitioned between phosphate buffer (0.1 M, pH 6.6) and ethyl acetate. The aqueous phase was extracted with ethyl acetate twice more. The combined ethyl acetate extracts were washed with additional phosphate buffer, brine and dried over sodium sulfate. The extracts were filtered and evaporated to afford 2.06 g (63%) of the title product as a flaky crystalline residue. Recrystallization from ethyl acetate/cyclohexane gave colorless flakes. mp 120-121 C. 1H NMR (CDCl3): delta=8.55 (br, 1 H); 8.24 (d, 1 H); 8.15 (d, 1 H); 7.76 (d of d, 1H); 6.64 (d of d, 1 H); 5.73 (d, 1 H); 5.28 (d, 1 H); 2.19 (s, 3 H). MS (Cl): m/z=163 (M+H+).

As the paragraph descriping shows that 6163-58-2 is playing an increasingly important role.

Reference£º
Patent; Pfizer Inc.; US6291489; (2001); B1;,
Phosphine ligand
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.6163-58-2,Tri-o-tolylphosphine,as a common compound, the synthetic route is as follows.

Step 2: 3-[6-(2-Phenylamino-ethylamino)-pyridin-3-yl)-acrylic acid tert-butyl ester (compound 46) In a 50 mL flask, a mixture of 42 (308 mg, 1.05 mmol), tert-butylacrylate (0.8 mL, 5.5 mmol), diisopropylethylamine (0.8 mL, 4.6 mmol), tri-o-tolylphosphine (POT, 192 mg, 0.63 mmol), Pd2(dba)3 (73 mg, 0.08 mmol) in anhydrous DMF (4 mL) was stirred at 1200C (preheated oil bath) for 2 h under nitrogen. After DMF removal, the crude residue was submitted to a chromatographic purification (column silica gel, 50% ether in hexanes) to afford 316 mg of 46 (88% yield). 13C NMR (300 MHz, CDCl3) delta (ppm): 166.6, 159.3, 149.6, 147.8, 140.7, 134.9, 129.1, 119.8, 117.3, 115.9, 112.6, 107.8, 80.0, 43.5, 40.9, 28.1. LRMS=340.3 (M+1).

As the paragraph descriping shows that 6163-58-2 is playing an increasingly important role.

Reference£º
Patent; MethylGene, Inc.; US2005/288282; (2005); A1;,
Phosphine ligand
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

6163-58-2, Tri-o-tolylphosphine is a chiral-phosphine-ligands compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

c Methyl (+-)-3-carbomethoxy-4-[2-bis(tert-butoxycarbonyl)aminomethyl-4-methoxyphenyl]-3-butenoate A 500 mL flask was charged with 3-bis(tert-butoxycarbonyl)aminomethyl-4-bromoanisole (15 g, 36 mmol), dimethyl itaconate (7.5 g, 47 mmol), tri-o-tolylphosphine (1 g, 3 mol), palladium acetate (0.4 g, 2 mmol), diisopropylethylamine (12.8 mL, 72 mmol), and propionitrile (150 mL). The mixture was purged with argon (several evacuation/argon flush cycles), then was heated to reflux under argon for 1 hr. The reaction was allowed to cool to RT, then was poured into ice-cold ethyl ether (500 mL). The resulting precipitate was removed by filtration and the filtrate was concentrated. The residue was purified by chromatography on silica gel (10% -20% ethyl acetate in hexane) to give the title compound (11.8 g, 66%) as a pale yellow oil.

6163-58-2 Tri-o-tolylphosphine 80271, achiral-phosphine-ligands compound, is more and more widely used in various.

Reference£º
Patent; SmithKline Beecham Corporation; US2002/32187; (2002); A1;,
Phosphine ligand
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

6163-58-2, Tri-o-tolylphosphine is a chiral-phosphine-ligands compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

(4E)-5-(3-Pyridyl)-4-penten-2-ol. A mixture of 3-bromopyridine (7.50 g, 47.46 mmol), 4-penten-2-ol (4.90 g, 56.96 mmol), palladium(II) acetate (106 mg, 0.47 mmol), tri-o-tolylphosphine (575 mg, 1.89 mmol), triethylamine (28.4 mL, 204.11 mmol) and acetonitrile (25 mL) were heated in a sealed glass tube at 140 C. for 14 h. The reaction mixture was cooled to ambient temperature, diluted with water, and extracted with chloroform (3*200 mL). The combined chloroform extracts were dried over sodium sulfate, filtered, and concentrated by rotary evaporation to give a pale-yellow oil (7.50 g, 81.0%).

6163-58-2 Tri-o-tolylphosphine 80271, achiral-phosphine-ligands compound, is more and more widely used in various.

Reference£º
Patent; Caldwell, William S.; Dull, Gary M.; Bhatti, Balwinder S.; Hadimani, Srishailkumar B.; Park, Haeil; Wagner, Jared M.; Crooks, Peter A.; Lippiello, Patrick M.; Bencherif, Merouane; US2003/125345; (2003); A1;,
Phosphine ligand
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate

6163-58-2, Tri-o-tolylphosphine is a chiral-phosphine-ligands compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated

Step 2: 3-[6-(2-Phenylamino-ethylamino)-pyridin-3-yl)-acrylic acid tert-butyl ester (Compound 46) In a 50 mL flask, a mixture of 42 (308 mg, 1.05 mmol), tert-butylacrylate (0.8 mL, 5.5 mmol), diisopropylethylamine (0.8 mL, 4.6 mmol), tri-o-tolylphosphine (POT, 192 mg, 0.63 mmol), Pd2(dba)3 (73 mg, 0.08 mmol) in anhydrous DMF (4 mL) was stirred at 120 C. (preheated oil bath) for 2 h under nitrogen. After DMF removal, the crude residue was submitted to a chromatographic purification (column silica gel, 50% ether in hexanes) to afford 316 mg of 46 (88% yield). 13C NMR (300 MHz, CDCl3) delta (ppm): 166.6, 159.3, 149.6, 147.8, 140.7, 134.9, 129.1, 119.8, 117.3, 115.9, 112.6, 107.8, 80.0, 43.5, 40.9, 28.1. LRMS=340.3 (M+1).

The synthetic route of 6163-58-2 has been constantly updated, and we look forward to future research findings.

Reference£º
Patent; MethylGene, Inc.; US6897220; (2005); B2;,
Phosphine ligand
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate