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644714

Sigma-Aldrich

Pd EnCat® 30

extent of labeling: 0.4 mmol/g Pd loading

同義詞:

聚脲基质微囊化乙酸钯

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About This Item

MDL號碼:
MFCD06798790
分類程式碼代碼:
12161600
NACRES:
NA.22

包含

0.37-0.44 mmol/g palladium

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

相關類別

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

Reaxa Technology
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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分析證明 (COA)

Lot/Batch Number
1436996V
1436995V
1436996
1437447
1436995

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存取文件庫

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

文章

EnCat™ & Other Catalysts

Sigma-Aldrich offers EnCat and a variety of transition metal-based encapsulated catalysts for applications in areas such as Suzuki, Stille, and Heck couplings, carbonylations, hydrogenation, hydrogenolysis, and dihydroxylation.

EnCat™ & Other Catalysts

We offer EnCat and a variety of transition metal-based encapsulated catalysts for applications in areas such as Suzuki, Stille, and Heck couplings, carbonylations, hydrogenation, hydrogenolysis, and dihydroxylation.

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