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Merck
CN

441902

Sigma-Aldrich

碳酸铯

ReagentPlus®, 99%

别名:

碳酸二铯

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About This Item

线性分子式:
Cs2CO3
CAS号:
分子量:
325.82
Beilstein:
4546405
EC 号:
MDL编号:
UNSPSC代码:
12352301
PubChem化学物质编号:
NACRES:
NA.22

质量水平

产品线

ReagentPlus®

方案

99%

表单

powder and chunks

pH值范围

10-13

mp

610 °C (dec.) (lit.)

溶解性

distilled water: soluble

密度

4.072 g/cm3 at 20 °C

SMILES字符串

[Cs+].[Cs+].[O-]C([O-])=O

InChI

1S/CH2O3.2Cs/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2

InChI key

FJDQFPXHSGXQBY-UHFFFAOYSA-L

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一般描述

碳酸铯是一种强无机碱,广泛用于有机合成。它是一种潜在的化学选择性催化剂,将醛和酮还原成醇。在4-三氟甲基-1-氯苯和芳基氯化物的Heck偶联反应中,它可用作碱。

应用

提高醇 O-烷基化的效率以生成碳酸烷基酯混合物。
碳酸铯可在C-C和C-N交叉偶联反应用作中底物,如Suzuki−Miyaura、Heck和Buchwald-Hartwig胺化反应。它还可在烷基化反应中用作底物。

法律信息

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

象形图

Health hazardCorrosion

警示用语:

Danger

危险声明

危险分类

Eye Dam. 1 - Repr. 2 - STOT RE 2 Oral

靶器官

Kidney,Adrenal gland,Testes

储存分类代码

13 - Non Combustible Solids

WGK

WGK 2

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What is Product 441902, Cesium Carbonate, soluble in?

    According to the chemicals encyclopedia published by the Royal Society of Chemistry:13th Edition this product is extremely soluble in water and alcohol.  It is also soluble in ether.

  4. What are the impurities present in Product 441902, Cesium Carbonate?

    We have performed any impurity profiling or testing on this product.  However, it has been noted that some of the trace metallic impurities could include, but are not limited to, the following: Lithium, Sodium, Potassium, Rubidium, Aluminum, Barium, Calcium, Chromium, Iron, Magnesium, Nickel, and Silicon.

  5. Product 441902, Cesium Carbonate, is very hygroscopic, how should it be handled in order to preserve the compound?

    When we package this product, it is packaged and sealed under a total nitrogen atmosphere to avoid any absorption of water from the atmosphere.  It would be optimal to do the same.  If you do not have a glove box or glove bag we do offer Aldrich Atmosbags that can used to help provide an inert atmosphere for compounds such as Cesium Carbonate. One could also flush the head space of the bottle before sealing it to help prevent the material from absorbing moisture during storage.

  6. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  7. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  8. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Cesium carbonate (CS2CO3)
Lehmann F
Synlett, 2004(13), 2447-2448 (2004)
Mengdi Zhao et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 20(30), 9259-9262 (2014-07-06)
Cs2CO3 has been found to be an efficient and chemoselective catalyst for reduction of aldehydes and ketones to alcohols with one equivalent of Ph2SiH2 as the reductant under solvent-free conditions. Most of the aldehydes employed can be effectively hydrosilated quantitatively
Single and double Suzuki- Miyaura couplings with symmetric dihalobenzenes
Sinclair DJ and Sherburn MS
The Journal of Organic Chemistry, 70(9), 3730-3733 (2005)
Pd-SAPO-31, an efficient, heterogeneous catalyst for Heck reactions of aryl chlorides.
Srivastava R, et al.
Tetrahedron Letters, 44(18), 3649-3651 (2003)
A Zapf et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 7(13), 2908-2915 (2001-08-07)
A detailed investigation into the influence of phosphines, additives, bases and solvents on the Heck coupling reaction of 4-trifluoromethyl-1-chlorobenzene (2) is presented. It is shown that a number of catalyst systems exist for efficient cross coupling of electron-deficient aryl chlorides

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Heck反应是烯烃与芳基或乙烯基卤化物(或三氟甲磺酸酯)之间的钯催化交叉偶联反应,用于生成取代的烯烃。

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