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644714

Sigma-Aldrich

Pd EnCat® 30

extent of labeling: 0.4 mmol/g Pd loading

别名:

聚脲基质微囊化乙酸钯

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About This Item

MDL號碼:
分類程式碼代碼:
12161600
NACRES:
NA.22

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


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分析证书(COA)

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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
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.
Yu, J.Q., et al.
Chemical Communications (Cambridge, England), 678-697 (2003)

相关内容

Homogeneous palladium catalysts are widely utilized due to their versatility, reactivity and functional group tolerance.

Homogeneous palladium catalysts are widely utilized due to their versatility, reactivity and functional group tolerance.

Homogeneous palladium catalysts are widely utilized due to their versatility, reactivity and functional group tolerance.

Homogeneous palladium catalysts are widely utilized due to their versatility, reactivity and functional group tolerance.

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