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33491-03-1

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33491-03-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33491-03-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,9 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 33491-03:
(7*3)+(6*3)+(5*4)+(4*9)+(3*1)+(2*0)+(1*3)=101
101 % 10 = 1
So 33491-03-1 is a valid CAS Registry Number.

33491-03-1SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 1-bromo-2-(4-chlorophenyl)acetylene

1.2 Other means of identification

Product number -
Other names 1-(bromoethynyl)-4-ethylbenzene

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:33491-03-1 SDS

33491-03-1Relevant articles and documents

Regio- and Stereoselective N-addition to an Open Bromo Vinyl Cation

Chuchmareva, Marina,Collong, Arndt,Niggemann, Meike,Schr?der, Sebastian,Strauch, Christina

supporting information, (2021/06/07)

A protocol for the synthesis of thus far inaccessible bromo vinyl triflimides is presented. Our previously reported concept of assisted vinyl cation formation was engaged to achieve both a protonation of relatively electron poor bromo alkynes and a reaction with high regio- and stereoselectivity. To the best of our knowledge, this is the first stereoselective addition of an N-nucleophile to an open β-halovinyl cation.

Copper-Catalyzed Perfluoroalkylation of Alkynyl Bromides and Terminal Alkynes

Fan, Shilu,Zheng, Chenggong,Zheng, Kaiting,Li, Junlan,Liu, Yaomei,Yan, Fangpei,Xiao, Hua,Feng, Yi-Si,Zhu, Yuan-Yuan

supporting information, p. 3190 - 3194 (2021/05/05)

A copper-catalyzed one-pot perfluoroalkylation of alkynyl bromides and terminal alkynes has been disclosed, and the corresponding perfluoroalkylated alkynes could be attained in good to excellent yields. The new straightforward transformation shows high efficiency (0.01-0.5 mol % catalyst loading), broad substrate scope, and remarkable functional group tolerance and provides a facile approach for useful application in life and material sciences.

Palladium-Catalyzed Carbonylation in the Synthesis of N-Ynonylsulfoximines

Ma, Ding,Wang, Chenyang,Kong, Deshen,Tu, Yongliang,Shi, Peng,Bolm, Carsten

supporting information, p. 1330 - 1334 (2021/01/26)

Palladium-catalyzed carbonylation reactions with Cr(CO)6 as carbonyl source are key for the preparation of N-ynonylsulfoximines from NH-sulfoximines and bromoalkynes. The couplings proceed at room temperature with a wide range of substrate combinations affording the corresponding products in good yields. (Figure presented.).

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