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261730-55-6

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261730-55-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 261730-55-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,1,7,3 and 0 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 261730-55:
(8*2)+(7*6)+(6*1)+(5*7)+(4*3)+(3*0)+(2*5)+(1*5)=126
126 % 10 = 6
So 261730-55-6 is a valid CAS Registry Number.

261730-55-6Downstream Products

261730-55-6Relevant articles and documents

Trifluoroethanol as a Unique Additive for the Chemoselective Electrooxidation of Enamines to Access Unsymmetrically Substituted NH-Pyrroles

Baidya, Mrinmay,De Sarkar, Suman,Maiti, Debabrata,Roy, Lisa

, (2021/12/23)

An electrochemical method for the synthesis of unsymmetrically substituted NH-pyrroles is described. The synthetic strategy comprises a challenging heterocoupling between two structurally diverse enamines via sequential chemoselective oxidation, addition,

Chiral Lewis Base-Catalyzed, Enantioselective Reduction of Unprotected β-Enamino Esters with Trichlorosilane

Ye, Jianheng,Wang, Chao,Chen, Lin,Wu, Xinjun,Zhou, Li,Sun, Jian

supporting information, p. 1042 - 1047 (2016/04/19)

Catalytic asymmetric reduction of N-unsubstituted β-enamino esters represents a major challenge for asymmetric catalysis. In this paper, the first organocatalytic system that could be used for the asymmetric hydrosilylation of N-unsubstituted β-enamino esters has been developed. Using N-tert-butylsulfinyl-L-proline-derived amides and L-pipecolinic acid-derived formamides as catalyst, a broad range of β-aryl- and β-alkyl-substituted free β-amino esters could be prepared with high yields and enantioselectivities. The practicality was illustrated by the gram-scale asymmetric synthesis of ethyl (R)-3-amino-3-phenylpropanoate and isopropyl (S)-3-amino-4-(2,3,5-trifluorophenyl)butanoate. The resulting product can be smoothly transformed to the FDA approved medicines dapoxetine and sitagliptin in a short synthetic route.

Reactions of tetrasulfur tetranitride antimony pentachloride complex (S4N4 SbCl5) with primary β-enaminones and β-enamino esters: Synthesis of 4-substituted 3-aroyl-and 3-ethoxycarbonyl-1,2,5-thiadiazoles

Bae, Su-Hak,Kim, Kyongtae,Park, Young Ja

, p. 159 - 172 (2007/10/03)

The reaction of tetrasulfur tetranitride antimony pentachloride complex (S4N4·SbCl5) with 3-amino-3-alkyl-1-aryl-2-propenones and 3-amino-1,3- diaryl-2-propenones in toluene at 100°C produced 4-substitued 3-aroyl-1,2,5- th

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