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包含
0.37-0.44 mmol/g palladium
品質等級
反應適用性
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
標籤範圍
0.4 mmol/g Pd loading
一般說明
It is an encapsulated catalyst (EnCat®), wherein palladium acetate is microencapsulated within a polyurea matrix, which prevents palladium leaching.
應用
可回收利用的负载化催化剂体系，在 C-C 键的形成和还原过程中可简化钯的除去。
虽然 Pd EnCat 40 在许多转化中都表现出优异的性能，但是具有较低基质含量的 Pd EnCat 30 也表现出相似的性能，在类似的条件下，在保持 Pd EnCat 40 机械稳定性的同时还具有改善的动力学特性。
特點和優勢
The advantages of using Pd EnCat® catalysts are:
- low residual metal levels in crude product
- easy recovery of catalyst
- compatibility of immobilized metal with various ligands to effect C-C bond forming reactions
- safer and easier to handle than Pd/C for hydrogenation
- efficiency and economy gains through recovery and recycling
其他說明
基质含量 30%
法律資訊
Pd Encat 技术已申请国际专利，包括 PCT/GB 02/03135。
EnCat is a registered trademark of Reaxa Ltd.
訊號詞
Danger
危險分類
Aquatic Chronic 3 - Eye Irrit. 2 - Flam. Sol. 2 - Repr. 1B - Skin Irrit. 2 - STOT RE 2 Inhalation
標靶器官
Nervous system
水污染物質分類（WGK）
WGK 3
個人防護裝備
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Yu, J.Q., et al.
Chemical Communications (Cambridge, England), 678-697 (2003)
Steven V Ley et al.
Organic letters, 5(24), 4665-4668 (2003-11-25)
[reaction: see text] Pd nanoparticles (approximately 2 nm in size) microencapsulated in polyurea is an efficient and recyclable catalyst for reductive ring-opening hydrogenolysis of epoxides, using either HCOOH/Et(3)N or H(2) as a hydrogen donor.
Steven V Ley et al.
Chemical communications (Cambridge, England), (10), 1134-1135 (2002-07-19)
Palladium(II) acetate microencapsulated in polyurea (MC-[Pd]) is an economical and versatile heterogeneous catalyst for a range of phosphine-free cross-coupling reactions in both conventional solvents and supercritical carbon dioxide (scCO2); the catalyst can be recovered by a simple filtration and recycled
相关内容
Homogeneous palladium catalysts are widely utilized due to their versatility, reactivity and functional group tolerance.
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