Tag: M.W:300-400

A common heterocyclic compound, (2,2¡ä-Bipyridine)dichloropalladium(II), its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.”14871-92-2

General procedure: Silver tetrafluoroborate (AgBF4) (0.6 mmol) was dissolvedin methanol (7 mL); (2,2?-bipyridine) dichloropalladium(II)(Pd(Bpy)Cl2) (0.3 mmol) was dissolved in DMSO (1 mL),and then, the solutions were stirred together at ambient temperature0.5 h. Following gravity filtration, solid 3-hydroxyflavonederivative (0.3 mmol) and triethylamine (0.7 mL)were added to the filtrate. The reaction mixture was stirredfor 0.5 h (2 h for the Fla-OMe). The corresponding bipyridinepalladium flavonolato salt was then recovered usingvacuum filtration and recrystallized in CH3OH/CH3CN solvent;remaining solvent was removed in a vacuum desiccator overnight.

The chemical industry reduces the impact on the environment during synthesis,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),I believe this compound will play a more active role in future production and life.

Reference£º
Article; Han, Xiaozhen; Whitfield, Sarah; Cotten, Jacob; Transition Metal Chemistry; (2019);,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

14871-92-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact.14871-92-2, (2,2¡ä-Bipyridine)dichloropalladium(II) it is a common compound, a new synthetic route is introduced below.

Solid [Pd(bpy)Cl2] (0.166 g, 0.5 mmol) was added to dl-H2pa (0.064 g, 0.5 mmol) in ethanol (8 mL) containing triethyl amine (0.05 g, 0.5 mmol). The mixture was stirred for 72 h. The yellow-beige precipitate was filtered off, washed with ethanol and air-dried. Yield: 45%. Anal. Calcd. for C16ClH22N3O4Pd: C, 41.6; H, 4.8; N, 9.1; Cl, 7.7; Pd, 23.0%, Found: C, 41.5; H, 4.4; N, 9.0; Cl, 7.6; Pd, 23.1%. Conductivity data (10-3 M in DMF):LambdaM = 97.0 ohm-1. IR (cm-1): nu(NH) 3106; nuas(COO-) 1659; nus(COO-) 1411; nu(Pd-O) 521; nu(Pd-N) 471 cm-1. Raman: nuas(COO-) 1598; nus(COO-) 1402; delta(NH) 1560; nu(Pd-O) 529; nu(Pd-N) 450 cm-1; 1H NMR (d6-DMSO/TMS, ppm), 3.73 (d, H, Halpha); 2.50 (m, 2H, Hbeta); 2.07 (m, 2H, Hgamma); 1.30 (m, 2H, Hdelta); 3.45, 3.10 (m, 2H, Hepsilon); 13.19 (s, H, NH), ESI-MS: m/z, 816.7 {Pd(Hpa)(bpy)]2Cl}+, 780.7 {[Pd(bpy)(Hpa)]2}+, 390.0 [Pd(bpy)(Hpa)]+, 263.0 [Pd(bpy)]+.

This compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),its application will become more common.

Reference£º
Article; Alie El-Deen, Afaf A.; El-Askalany, Abd El-Monem E.; Halaoui, Ruba; Jean-Claude, Bertrand J.; Butler, Ian S.; Mostafa, Sahar I.; Journal of Molecular Structure; vol. 1036; (2013); p. 161 – 167;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

14871-92-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact.14871-92-2, (2,2¡ä-Bipyridine)dichloropalladium(II) it is a common compound, a new synthetic route is introduced below.

General procedure: Silver tetrafluoroborate (AgBF4) (0.6 mmol) was dissolvedin methanol (7 mL); (2,2?-bipyridine) dichloropalladium(II)(Pd(Bpy)Cl2) (0.3 mmol) was dissolved in DMSO (1 mL),and then, the solutions were stirred together at ambient temperature0.5 h. Following gravity filtration, solid 3-hydroxyflavonederivative (0.3 mmol) and triethylamine (0.7 mL)were added to the filtrate. The reaction mixture was stirredfor 0.5 h (2 h for the Fla-OMe). The corresponding bipyridinepalladium flavonolato salt was then recovered usingvacuum filtration and recrystallized in CH3OH/CH3CN solvent;remaining solvent was removed in a vacuum desiccatorovernight.[(PdII(Bpy)(3-Hydroxy-4?-methoxyFla)][BF4] complex1 Yield: 129 mg, 70% (orange crystals) Found: C, 50.51;H, 3.01; N, 4.52; Calcd for C26H19BF4N2O4Pd:C, 50.64;H, 3.11; N, 4.54. UV-Vis lambdamax (CH3CN/nm)(epsilon/M-1 cm-1) (444 (25 200); 1H NMR (CD3CN, 400 MHz): delta 7.92 (d,J = 6.5 Hz, 2H), 7.85 (m, J = 21.9 Hz, 4H), 7.65 (t, J = 18.7,2H), 7.47 (d, J = 7.3 Hz, 2H), 7.28 (t, J = 11.4 Hz, 1 H),7.19 (d, J = 6.5 Hz, 2 H), 7.13 (t, J = 13.9 Hz, 1 H), 6.66 (d,J = 8.1 Hz, 2 H); 13C NMR (CD3CN, 400 MHz): delta = 181.44,161.13, 153.96, 153.65, 152.62, 151.82, 150.65, 148.54,148.20, 140.94, 140.67, 138.01, 133.05, 129.37, 129.14,127.34, 127.27, 125.04, 124.44, 124.03, 123.10, 123.01,121.96, 121.73, 117.45, 115.53, 54.91 ppm. ESI MS: m/z(pos.) 529.04.

This compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),its application will become more common.

Reference£º
Article; Han, Xiaozhen; Whitfield, Sarah; Cotten, Jacob; Transition Metal Chemistry; (2019);,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

14871-92-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact.14871-92-2, (2,2¡ä-Bipyridine)dichloropalladium(II) it is a common compound, a new synthetic route is introduced below.

General procedure: Palladium(II) chloride (PdCl2), 2,2?-bipyridine (bipy), 1,10-phenanthroline (phen), thiourea (TU, 1), N-methylthiourea (meTU, 2), N-buthylthiourea (buTU, 3), N,N?-diethylthiourea (dietTU, 4) and N,N?-dibuthylthiourea (dibuTU, 5) were purchased as pure reagents at AG, from Sigma Aldrich. Potassium tetrachloropalladate(II) was prepared by the reaction of palladium chloride with a slight excess of potassium chloride. The complexes [Pd(bipy)Cl2] and [Pd(phen)Cl2], were obtained by adding 1 mmol of the respective ligand to 0.326 g (1 mmol) of K2[PdCl4] suspended/dissolved in 40 mL of wet methanol under reflux for about 1 h. The precipitated crystalline powders were recovered by filtration and dried under vacuum for 2 h. 0.25 mmol of these complexes (83 and 89 mg, respectively) were then suspended again in a water/methanol mixture, whereupon 0.5 mmol of the respective thiourea (1-5) was added under reflux. After 1 h, clear yellow to orange solutions were obtained. These solutions were filtrated and the filtrates were kept for 3-5 days at room temperature for crystallization. As a result yellow-red crystals were obtained. The experimental yield of the products, based on Pd, was more than 50%. All the solvents, of analytical grade, were dried and deoxygenated before being used. Elemental analyses were performed at the Microanalytical Laboratory of Redox snc (Milano). Characterization details are extensively quoted in the supplementary material.

This compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),its application will become more common.

Reference£º
Article; Rotondo, Archimede; Barresi, Salvatore; Cusumano, Matteo; Rotondo, Enrico; Polyhedron; vol. 45; 1; (2012); p. 23 – 29;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

14871-92-2, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact.14871-92-2, (2,2¡ä-Bipyridine)dichloropalladium(II) it is a common compound, a new synthetic route is introduced below.

Pd(2,2?-bpy)Cl2 (67 mg, 0.2 mmol) was stirred with AgNO3 (68 mg, 0.4 mmol) in water (10 mL) with light excluded at 40 C for 12 h. The suspension obtained was cooled to 0 C in ice bath for 30 min. Then AgCl was removed from the solution by filtration. 1 (52.8 mg, 0.2 mmol) was added to the clear filtrate and pH was measured and found to be 2.0. Then the mixture was stirred at 40 C for 2 h. The resulting light yellow solution was concentrated to a volume of 5 mL at 40 C on a rotary evaporator. Yellow cubes were obtained after one day. The yield was 85 mg (60%). 1H NMR (D2O, pD 2.0, 298 K, delta, ppm): 1?, 3.69 (12 H, s, CH3), 3.60 (4H, s, CH2), 7.93 (4H, s, H6); 2,2?-bpy, 7.23 (4H, dd, H5, 3JH-H = 6.0 Hz, 4JH-H = 3.0 Hz), 7.60 (4H, t, H5?, 3JH-H = 7.2 Hz), 7.79 (4H, dd, H6, 3JH-H = 6.0 Hz), 7.94-8.18 (20H, m, H3,H3?,H4,H4?,H6?).

This compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),its application will become more common.

Reference£º
Article; Khutia, Anupam; Shen, Wei-Zheng; Das, Neeladri; Sanz Miguel, Pablo J.; Lippert, Bernhard; Inorganica Chimica Acta; vol. 417; (2014); p. 274 – 286;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

(2,2¡ä-Bipyridine)dichloropalladium(II), A common heterocyclic compound, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.”14871-92-2

General procedure: Palladium(II) chloride (PdCl2), 2,2?-bipyridine (bipy), 1,10-phenanthroline (phen), thiourea (TU, 1), N-methylthiourea (meTU, 2), N-buthylthiourea (buTU, 3), N,N?-diethylthiourea (dietTU, 4) and N,N?-dibuthylthiourea (dibuTU, 5) were purchased as pure reagents at AG, from Sigma Aldrich. Potassium tetrachloropalladate(II) was prepared by the reaction of palladium chloride with a slight excess of potassium chloride. The complexes [Pd(bipy)Cl2] and [Pd(phen)Cl2], were obtained by adding 1 mmol of the respective ligand to 0.326 g (1 mmol) of K2[PdCl4] suspended/dissolved in 40 mL of wet methanol under reflux for about 1 h. The precipitated crystalline powders were recovered by filtration and dried under vacuum for 2 h. 0.25 mmol of these complexes (83 and 89 mg, respectively) were then suspended again in a water/methanol mixture, whereupon 0.5 mmol of the respective thiourea (1-5) was added under reflux. After 1 h, clear yellow to orange solutions were obtained. These solutions were filtrated and the filtrates were kept for 3-5 days at room temperature for crystallization. As a result yellow-red crystals were obtained. The experimental yield of the products, based on Pd, was more than 50%. All the solvents, of analytical grade, were dried and deoxygenated before being used. Elemental analyses were performed at the Microanalytical Laboratory of Redox snc (Milano). Characterization details are extensively quoted in the supplementary material.

As the rapid development of chemical substances, we look forward to future research findings about 14871-92-2

Reference£º
Article; Rotondo, Archimede; Barresi, Salvatore; Cusumano, Matteo; Rotondo, Enrico; Polyhedron; vol. 45; 1; (2012); p. 23 – 29;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact.14871-92-2, (2,2¡ä-Bipyridine)dichloropalladium(II) it is a common compound, a new synthetic route is introduced below.14871-92-2

To a yellow suspension containing 0.20 g (0.60 mmol) of [Pd(bpy)Cl2] in water (20 mL)was added 0.08 g (0.60 mmol) of HaptHCl. After the mixture was stirred at 50 C for 7 h, theresulting yellow solution was filtered. To the yellow filtrate was added an aqueous solution ofNaClO4 (2 M, 10 mL), followed by standing at room temperature for 1 d. The resulting yellowcrystals of [1](ClO4)4 suitable for X-ray analysis were collected by filtration. Yield: 0.32 g (87%).

This compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),its application will become more common.

Reference£º
Article; Kouno, Masahiro; Miyashita, Yoshitaro; Yoshinari, Nobuto; Konno, Takumi; Chemistry Letters; vol. 44; 11; (2015); p. 1512 – 1514;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

(2,2¡ä-Bipyridine)dichloropalladium(II), A common heterocyclic compound, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.”14871-92-2

10 mL ofa solution of AgNO3 (0.204 g, 1.2 mmol) was added to aqueous suspension of Pd(bipy)Cl2 (0.2 g, 0.6 mmol) acidified to pH 2-3. The formed suspension was homogenized and incubated during 1 h at 60C.

As the rapid development of chemical substances, we look forward to future research findings about 14871-92-2

Reference£º
Article; Nikandrov; Grigor’Eva; Eremin; Ruzanov; Gurzhii; Belyaev; Russian Journal of General Chemistry; vol. 85; 8; (2015); p. 1992 – 1993; Zh. Obshch. Khim.; vol. 85; 8; (2015); p. 1405 – 1406,2;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

A common heterocyclic compound, (2,2¡ä-Bipyridine)dichloropalladium(II), its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.”14871-92-2

First, 63.6 mg (0.2 mmol)Of compounds 111-5 and 32.2 mmol (0.6 mmol)Of methanol was added to a mixture of 30 ml of anhydrous methanol and tetrahydrofuran(Volume ratio of 1: 1)Argon protection,After stirring at room temperature for 1.5 h,Followed by the addition of 66.4 mg (0.2 mmol) of cis-dichloro-1,1′-bipyridyl palladium (II)Continue to argon protection,Stirring at 25 C for 14 h,After the reaction,The resulting solid was purified by column chromatography,Get the target product,Weight 93.8 mg, yield: 85%.

The chemical industry reduces the impact on the environment during synthesis,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),I believe this compound will play a more active role in future production and life.

Reference£º
Patent; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Wang, Zhiyuan; Liu, Bo; Qiao, Wenqiang; (34 pag.)CN103483391; (2016); B;,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method

A common heterocyclic compound, (2,2¡ä-Bipyridine)dichloropalladium(II), its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.”14871-92-2

General procedure: Silver tetrafluoroborate (AgBF4) (0.6 mmol) was dissolvedin methanol (7 mL); (2,2?-bipyridine) dichloropalladium(II)(Pd(Bpy)Cl2) (0.3 mmol) was dissolved in DMSO (1 mL),and then, the solutions were stirred together at ambient temperature0.5 h. Following gravity filtration, solid 3-hydroxyflavonederivative (0.3 mmol) and triethylamine (0.7 mL)were added to the filtrate. The reaction mixture was stirredfor 0.5 h (2 h for the Fla-OMe). The corresponding bipyridinepalladium flavonolato salt was then recovered usingvacuum filtration and recrystallized in CH3OH/CH3CN solvent;remaining solvent was removed in a vacuum desiccator overnight.

This compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,14871-92-2,(2,2¡ä-Bipyridine)dichloropalladium(II),its application will become more common.

Reference£º
Article; Han, Xiaozhen; Whitfield, Sarah; Cotten, Jacob; Transition Metal Chemistry; (2019);,
Chapter 1 An introduction to palladium catalysis
Palladium/carbon catalyst regeneration and mechanical application method