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93304-03-1

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93304-03-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 93304-03-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,3,0 and 4 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 93304-03:
(7*9)+(6*3)+(5*3)+(4*0)+(3*4)+(2*0)+(1*3)=111
111 % 10 = 1
So 93304-03-1 is a valid CAS Registry Number.

93304-03-1Relevant articles and documents

Acylation of pyrroles and their free (N-H)-derivatives via palladium-catalyzed carbopalladation of nitriles

Jafarpour, Farnaz,Hazrati, Hamideh,Darvishmolla, Masoumeh

supporting information, p. 3784 - 3788 (2015/02/19)

An efficient regioselective synthesis of 2-acylpyrroles via palladium-catalyzed addition of pyrroles with benzonitriles and subsequent hydrolysis is developed. The direct acylation reaction of protected as well as (NH)-free pyrroles proceeded smoothly to

Unexpectedly high activity of Zn(OTf)2·6H2O in catalytic Friedel-Crafts acylation reaction

He, Fei,Wu, Huayue,Chen, Jiuxi,Su, Weike

, p. 255 - 264 (2008/03/17)

Zn(OTf)2·6H2O was used to promote Friedel-Crafts acylation of aromatics. The work describes the high activity and efficiency of Zn(OTf)2·6H2O in acylation of aromatics, and the catalyst has surpassed most metal triflates in dispensing when dried at high temperature under vacuum before use. Copyright Taylor & Francis Group, LLC.

Ytterbium (III) trifluoromethanesulfonate catalysed Friedel-Crafts acylation of 1-methylpyrrole in ionic liquid

Su, Weike,Wu, Chunlei,Su, Hao

, p. 67 - 68 (2007/10/03)

In the presence of a catalytic amount of ytterbium (III) trifluoromethanesulfonate [Yb(OTf)3], 1-methylpyrrole can easily react with acyl chlorides in an ionic liquid [bpy][BF4](bpy=1- butylpyridine) to form corresponding ketones in satisfactory yield. The recyclability of the ionic liquid/catalyst system is demonstrated.

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