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199179-83-4

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199179-83-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 199179-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,1,7 and 9 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 199179-83:
(8*1)+(7*9)+(6*9)+(5*1)+(4*7)+(3*9)+(2*8)+(1*3)=204
204 % 10 = 4
So 199179-83-4 is a valid CAS Registry Number.

199179-83-4Downstream Products

199179-83-4Relevant academic research and scientific papers

Palladium-Catalyzed Carbonylative Synthesis of α,β-Unsaturated Amides from Styrenes and Nitroarenes

Peng, Jin-Bao,Geng, Hui-Qing,Li, Da,Qi, Xinxin,Ying, Jun,Wu, Xiao-Feng

supporting information, p. 4988 - 4993 (2018/08/24)

A procedure on palladium-catalyzed selective aminocarbonylation of styrenes with nitroarenes for the synthesis of α,β-unsaturated amides has been developed. A range of substituted α,β-unsaturated amides were synthesized in moderate to good yields. Interestingly, nitroarenes act as both a nitrogen source and oxidant, and Mo(CO)6 acts as a solid CO source and reductant in this catalytic system.

Synthesis of amides by palladium-catalyzed decarbonylative coupling of carboxylic acids with isocyanides

Huang, Lin,Guo, Haili,Pan, Lingxia,Xie, Chunsong

, p. 6027 - 6031 (2013/09/24)

Amides were synthesized from carboxylic acids and isocyanides under Pd II/AgI/base catalytic conditions. The reaction conditions were optimized, and the scope was studied. Various carboxylic acids and aryl isocyanides are compatible with this reaction, but alkyl isocyanides are not. A plausible mechanism, which features distinctive PdII-mediated decarbonylative coupling and unprecedented nucleophilic attack of carboxylates to PdII-ligated isocyanides, was proposed to account for this reaction. N-Arylamides are assembled in high yields from carboxylic acids and isocyanides under PdII/AgI/base catalytic conditions. The decarbonylative coupling features unprecedented nucleophilic attack of the carboxylate on the isocyanide, which acts as an electrophile as a result of its coordination to PdII, and this inverted reactivity is proposed to account for this transformation.

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