酢酸パラジウム(II)

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H317：アレルギー性皮膚反応を起こすおそれ

  H318：重篤な眼の損傷

  H410：長期的影響により水生生物に非常に強い毒性

• 注意書き

  P261：粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。

  P272：汚染された作業衣は作業場から出さないこと。

  P273：環境への放出を避けること。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P302+P352：皮膚に付着した場合：多量の水と石鹸で洗うこと。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

酢酸パラジウム(II) 価格

MSDS Information

• Palladium diacetate

酢酸パラジウム(II) 化学特性,用途語,生産方法

• 外観

  褐色の粉末

• 溶解性

  水に微溶, 熱塩酸, ベンゼンに可溶。

• 用途

  反応制御系触媒

• 用途

  触媒。

• 使用上の注意

  アルゴン封入

• 化学的特性

  Brown needles, soluble in benzene and toluene, insoluble in ether and alcohol, keep in dark and refrigerated.

• 使用

  Palladium (II) Acetate Trimer is used in Suzuki-Miyaura cross-coupling reactions and a catalyst for intramolecular coupling. It also serves to catalyze the chemoselective reduction of nitroarenes.

• 定義

  Palladium acetate is a chemical compound of palladium. It is used as a catalyst for many organic reactions and as a precursor to other palladium(II) compounds. Palladium is a chemical element with the chemical symbol Pd and an atomic number of 46. It is found as a free metal alloyed with gold and other platinum group metals and in the rare minerals cooperite and polarite. (Toxin and Toxin Target Database (T3DB))

• 製造方法

  The synthesis of palladium acetate was first reported by Wilkinson et al.,where glacial acetic acid containing palladium powder is heated at reflux with a minimal amount of nitric acid until the generation of brown NOx fumes ceases. Although this is a relatively old method, it is still the most commercially employed route for the synthesis of palladium acetate, considering the process economics. Palladium (II) Acetate can be synthesized in two steps from palladium sponge via the intermediate dinitrate by first combining it with hot glacial acetic acid and nitric acid:
  Pd + 2 HNO3 → Pd(NO3)2 + H2
  Pd(NO3)2 + 2 CH3COOH → Pd(O2CCH3)2 + 2 HNO3

• 反応性

  1. Efficient catalyst for the arylation of olefins (Heck reaction).
  2. Catalyst for cross-coupling reactions.
  3. Catalyst for C-H activation.
  4. Precatalyst for enantioselective decarboxylative protonation of allyl β-ketoesters. 
  

• 一般的な説明

  Palladium(II) acetate is a homogenous oxidation catalyst. It participates in the activation of alkenic and aromatic compounds towards oxidative inter- and intramolecular nucleophilic reactions. Crystals of palladium(II) acetate have a trimeric structure, having symmetry D_3h. Each of the palladium atoms in the crystals are joined to the other two by double acetate bridges. Microencapsulation of palladium(II) acetate in polyurea affords polyurea-encapsulated palladium(II) acetate. It is a versatile heterogeneous catalyst for various phosphine-free cross-coupling reactions. It participates as catalyst in the Heck coupling reaction of pthalides with different alkenes.

• 化学性质

  炭化水素のC-H結合がLM-X錯体によりヘテロリティックに切断される

• 安全性プロファイル

  Moderately toxic by ingestion. When heated to decomposition it emits toxic vapors of palladium.

• 合成方法

  N,N-ジメチルベンジルアミンとアリールパラジウム錯体が生成される

• 純化方法

  It recrystallises from CHCl3 as purple crystals. It can be washed with AcOH and H2O and dried in air. Large crystals are obtained by dissolving it in *C6H6, adding half its volume of AcOH and allowing it to evaporate slowly at room temperature. It forms green adducts with nitrogen donors, it dissolves in KI solution to form solid PdI2 and a red solution of PdI42-, but is insoluble in aqueous saturated NaCl, and NaOAc. It dissolves in HCl to form PdCl42-. It is soluble in CHCl3, CH2Cl2, Me2CO, MeCN, Et2O, but it is insoluble in H2O, and decomposes when warmed in alcohols in which it is also insoluble. [Morehouse et al. Chem Ind (London) 544 1964, Stephenson et al. J Chem Soc 3632 1965, Skapski & Smart J Chem Soc (D) 658 1970, Heck Acc Chem Res 12 146 1979.]

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