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1503-91-9

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1503-91-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1503-91-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,0 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1503-91:
(6*1)+(5*5)+(4*0)+(3*3)+(2*9)+(1*1)=59
59 % 10 = 9
So 1503-91-9 is a valid CAS Registry Number.
InChI:InChI=1/C8H8ClNO2/c1-6(11)10(12)8-4-2-7(9)3-5-8/h2-5,12H,1H3

1503-91-9SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name N-(4-chlorophenyl)-N-hydroxyacetamide

1.2 Other means of identification

Product number -
Other names N-Acetyl-N-<4-chlor-phenyl>-hydroxylamin

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:1503-91-9 SDS

1503-91-9Relevant articles and documents

C-N bond formation followed by N-Cl bond breaking. One more and unexpected case of the formation of a hydroxamic group via heterolytic bond cleavage

Vinkovi? Vr?ek, Ivana,Pilepi?, Viktor,Ur?i?, Stanko

, p. 699 - 702 (2004)

An unexpected and previously unknown reaction sequence in the interactions of the acyl halides with nitrosobenzenes, which involves carbon-nitrogen bond formation followed by heterolytic nitrogen-chlorine bond cleavage giving the corresponding unsubstituted N-phenylalkylhydroxamic acids (or N-phenylarylhydroxamic acids) and chlorine as the products has been observed. The kinetic and other evidence obtained suggest that the carbon-nitrogen bond formation is the consequence of a nucleophilic interaction of an N-phenylchlorohydroxylamine intermediate, formed in the first reaction step, with the acyl halide in the second step of the complex sequence, which leads to an N-acyl-N-chlorophenylhydroxylamine cation intermediate. The key reaction step involves the interaction of an N-acyl-N-chlorophenylhydroxylamine cation intermediate with chloride ion, which leads to the N-Cl heterolytic bond cleavage and the final formation of the hydroxamic group and a molecule of chlorine.

Transketolase Catalyzed Synthesis of N-Aryl Hydroxamic Acids

Fúster Fernández, Inés,Hecquet, Laurence,Fessner, Wolf-Dieter

supporting information, p. 612 - 621 (2021/12/08)

Hydroxamic acids are metal-chelating compounds that show important biological activity including anti-tumor effects. We have recently engineered the transketolase from Geobacillus stearothermopilus (TKgst) to convert benzaldehyde as a non-natur

Hydroxamic Acids as Chemoselective (ortho-Amino)arylation Reagents via Sigmatropic Rearrangement

Shaaban, Saad,Tona, Veronica,Peng, Bo,Maulide, Nuno

supporting information, p. 10938 - 10941 (2017/08/30)

The use of readily available hydroxamic acids as reagents for the chemoselective (ortho-amino)arylation of amides is described. This reaction proceeds under metal-free, mild conditions, displays a very broad scope, and constitutes a direct approach for the metal-free attachment of aniline residues to carbonyl derivatives.

Mechanistic studies on intramolecular C-H trifluoromethoxylation of (hetero)arenes via OCF3-migration

Lee, Katarzyna N.,Lei, Zhen,Morales-Rivera, Cristian A.,Liu, Peng,Ngai, Ming-Yu

supporting information, p. 5599 - 5605 (2016/07/06)

The one-pot two-step intramolecular aryl and heteroaryl C-H trifluoromethoxylation recently reported by our group has provided a general, scalable, and operationally simple approach to access a wide range of unprecedented and valuable OCF3-containing building blocks. Herein we describe our investigations to elucidate its reaction mechanism. Experimental data indicate that the O-trifluoromethylation of N-(hetero)aryl-N-hydroxylamine derivatives is a radical process, whereas the OCF3-migration step proceeds via a heterolytic cleavage of the N-OCF3 bond followed by rapid recombination of a short-lived ion pair. Computational studies further support the proposed ion pair reaction pathway for the OCF3-migration process. We hope that the current study would provide useful insights for the development of new transformations using versatile N-(hetero)aryl-N-hydroxylamine synthons.

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