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655-26-5

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655-26-5 Usage

Uses

3'-Bromo-2,2,2-trifluoroacetophenone is a useful research chemical.

Check Digit Verification of cas no

The CAS Registry Mumber 655-26-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,5 and 5 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 655-26:
(5*6)+(4*5)+(3*5)+(2*2)+(1*6)=75
75 % 10 = 5
So 655-26-5 is a valid CAS Registry Number.
InChI:InChI=1/C8H4BrF3O/c9-6-3-1-2-5(4-6)7(13)8(10,11)12/h1-4H

655-26-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 3′-Bromo-2,2,2-trifluoroacetophenone

1.2 Other means of identification

Product number -
Other names 1-(3-bromophenyl)-2,2,2-trifluoroethanone

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:655-26-5 SDS

655-26-5Relevant articles and documents

Synthesis of trifluoromethyl ketones by nucleophilic trifluoromethylation of esters under a fluoroform/KHMDS/triglyme system

Fujihira, Yamato,Liang, Yumeng,Ono, Makoto,Hirano, Kazuki,Kagawa, Takumi,Shibata, Norio

supporting information, p. 431 - 438 (2021/03/20)

A straightforward method that enables the formation of biologically attractive trifluoromethyl ketones from readily available methyl esters using the potent greenhouse gas fluoroform (HCF3, HFC-23) was developed. The combination of fluoroform and KHMDS in triglyme at ?40 °C was effective for this transformation, with good yields as high as 92%. Substrate scope of the trifluoromethylation procedure was explored for aromatic, aliphatic, and conjugated methyl esters. This study presents a straightforward trifluoromethylation process of various methyl esters that convert well to the corresponding trifluoromethyl ketones. The tolerance of various pharmacophores under the reaction conditions was also explored.

Fluoroform: an Efficient Precursor for the Trifluoromethylation of Aromatic Esters by Sodium Diisopropylamide with Trialkylamines

Han, Zhaomeng,Chen, Sihan,Tu, Yongjun,Lian, Xiongdong,Li, Gongyong

supporting information, p. 4658 - 4661 (2019/08/07)

The trifluoromethanide anion is the postulated key intermediate in nucleophilic trifluoromethylation reactions. It is believed to be incompatible with Na+ cation due to the strong Na–F bond. However, herein we demonstrate that it could be prepared for the first time. Trialkylamines can be used as cation chelating agents to stabilize the isolated –CF3 ion to realize trifluoromethylation reaction. With this strategy, trifluoromethyl aromatic ketones could be effectively synthesized from fluoroform and aromatic esters with diisopropyl aminosodium (NaDA) and trialkylamines.

Copper-Mediated Trifluoroacetylation of Arenediazonium Salts with Ethyl Trifluoropyruvate

Wu, Wei,Tian, Qinli,Chen, Taotao,Weng, Zhiqiang

supporting information, p. 16455 - 16458 (2016/11/11)

A copper-mediated trifluoroacetylation of various arenediazonium salts with ethyl trifluoropyruvate is reported. The reaction proceeded smoothly under mild conditions at room temperature giving trifluoromethyl aryl ketones in moderate to good yields. A variety of functional groups, including methoxy, hydroxy, ester, ketone, trifluoromethyl, and halide groups, were well tolerated. A possible reaction mechanism involving an aryl radical intermediate was proposed and supported by experimental evidence. This reaction provides a new route to trifluoromethyl aryl ketones, notable synthetic targets, from the corresponding anilines.

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