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95139-42-7

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95139-42-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 95139-42-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,1,3 and 9 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 95139-42:
(7*9)+(6*5)+(5*1)+(4*3)+(3*9)+(2*4)+(1*2)=147
147 % 10 = 7
So 95139-42-7 is a valid CAS Registry Number.

95139-42-7Downstream Products

95139-42-7Relevant articles and documents

Base-Mediated Direct Transformation of N-Propargylamines into 2,3,5-Trisubstituted 1 H-Pyrroles

Mishra, Pawan K.,Verma, Shalini,Kumar, Manoj,Verma, Akhilesh K.

, (2018/11/23)

An efficient and base-mediated intramolecular cyclization of N-propargylamines for the synthesis of structurally diversified pyrroles in high yield has been described. The developed methodology is broadly applicable and is tolerated by a variety of functional groups. Key intermediates of natural product discoipyrrole C as well as HMG-CoA-reductase inhibitor have been successfully synthesized using developed chemistry. The proposed mechanism was supported by control experiments.

Iron-Catalyzed Radical Cycloaddition of 2H-Azirines and Enamides for the Synthesis of Pyrroles

Zhao, Mi-Na,Ren, Zhi-Hui,Yang, De-Suo,Guan, Zheng-Hui

supporting information, p. 1287 - 1290 (2018/03/09)

A novel and efficient Fe-catalyzed radical cycloaddition of 2H-azirines and enamides for the synthesis of substituted pyrroles has been developed. The radical cycloaddition reaction proceeded through a conceptually new Fe(II)-catalyzed homolytic cleavage of C-N bond of 2H-azirines sequential radical cyclization with enamides. The reaction used readily available starting materials, tolerated various functional groups, and afforded valuable triaryl-substituted pyrroles in good to high yields under mild reaction conditions.

Rhodium-Catalyzed Oxidative Cycloaddition of N-tert-Butoxycarbonylhydrazones with Alkynes for the Synthesis of Functionalized Pyrroles via C(sp3)–H Bond Functionalization

Chan, Chun-Ming,Zhou, Zhongyuan,Yu, Wing-Yiu

, p. 4067 - 4074 (2016/12/30)

A rhodium(III)-catalyzed cycloaddition of N-tert-butoxycarbonylhydrazones with internal alkynes was developed. The reaction features a regioselective α-imino alkyl C(sp3)?H bond functionalization resulting in selective formation of highly functionalized NH-free pyrroles. Our studies showed that utilizing the N-tert-butoxycarbonyl (N-Boc) as the oxidizing directing group is critical for achieving the observed pyrrole formation versus the isoquinoline formation. To account for the pyrrole formation, we hypothesized that a prior tautomerization of the N-Boc-hydrazones to enamines should occur, followed by regioselective C(sp2)–H cleavage to form a putative five-membered rhodacycle. Subsequent coupling of the rhodacycle with the alkynes would afford the pyrrole products. (Figure presented.).

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