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Merck
모든 사진(1)

주요 문서

938963

Sigma-Aldrich

Potassium tert-butoxide ChemBeads

동의어(들):

Potassium tert-butylate, Potassium t-butoxide

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About This Item

실험식(Hill 표기법):
KOC4H9
CAS Number:
Molecular Weight:
112.21
MDL number:
UNSPSC 코드:
12352100

설명

Reagent Type-Organic Salt

Quality Level

형태

solid

구성

wt% loading of base, 14-16 wt. %

반응 적합성

core: potassium

SMILES string

[K+].CC(C)(C)[O-]

InChI

1S/C4H9O.K/c1-4(2,3)5;/h1-3H3;/q-1;+1

InChI key

LPNYRYFBWFDTMA-UHFFFAOYSA-N

일반 설명

Potassium tert-butoxide is a strong alkoxide base, it can deprotonate carbon and other Brφnsted acids. It is a relatively poor nucleophile.

애플리케이션

Potassium tert-butoxide has been used as a strong base in the enantioselective synthesis of amines by transfer hydrogenation of N-(tertbutylsulfinyl)imines. It can also be used: To synthesize aliphatic and aromatic amides from corresponding esters and amines. As a base in the intramolecular cyclization of aryl ethers, amines, and amides. As a catalyst to prepare styrene derivatives from aryl halides and alkenes by Mizoroki-Heck reaction.
For general uses, product is also available in powdered form (156671)

특징 및 장점

ChemBeads are chemical coated glass beads. ChemBeads offer improved flowability and chemical uniformity perfect for automated solid dispensing and high-throughput experimentation. The method of creating ChemBeads uses no other chemicals or surfactants allowing the user to accurately dispense sub-milligram amounts of chemical.

픽토그램

FlameCorrosion

신호어

Danger

유해 및 위험 성명서

Hazard Classifications

Eye Dam. 1 - Flam. Sol. 1 - Self-heat. 2 - Skin Corr. 1A

보충제 위험성

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 3


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시험 성적서(COA)

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문서 라이브러리 방문

Einav Amit et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 26(57), 13046-13052 (2020-04-29)
N-heterocyclic carbenes (NHCs) have emerged as a unique molecular platform for the formation of self-assembled monolayers (SAMs) on various surfaces. However, active carbene formation requires deprotonation of imidazolium salt precursors, which is mostly facilitated by exposure of the salt to
Hajime Ito et al.
Chemical communications (Cambridge, England), 48(64), 8006-8008 (2012-07-10)
The regio- and diastereoselective silaboration of aromatic alkenes with a silylboron compound proceeds in the presence of a catalytic amount of potassium tert-butoxide, providing a complementary method to the corresponding transition metal-catalyzed reactions.
Huaiqing Zhao et al.
Chemical communications (Cambridge, England), 49(23), 2323-2325 (2013-02-14)
A macrocyclic aromatic pyridone pentamer was shown to catalyze highly efficient transition-metal-free arylations of unactivated aromatic C-H bonds with aryl iodides and bromides in the presence of potassium tert-butoxide.
Chang-Liang Sun et al.
Nature chemistry, 2(12), 1044-1049 (2010-11-26)
The direct functionalization of C-H bonds has drawn the attention of chemists for almost a century. C-H activation has mainly been achieved through four metal-mediated pathways: oxidative addition, electrophilic substitution, σ-bond metathesis and metal-associated carbene/nitrene/oxo insertion. However, the identification of
Noah P Tu et al.
Angewandte Chemie (International ed. in English), 58(24), 7987-7991 (2019-03-21)
Technologies that enable rapid screening of diverse reaction conditions are of critical importance to methodology development and reaction optimization, especially when molecules of high complexity and scarcity are involved. The lack of a general solid dispensing method for chemical reagents

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