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(S)-α-[2,2-bis(phenylsulfonyl)ethyl]-α-(tert-butoxycarbonylamino)-benzeneacetaldehyde is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1257438-06-4

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1257438-06-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1257438-06-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,4,3 and 8 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1257438-06:
(9*1)+(8*2)+(7*5)+(6*7)+(5*4)+(4*3)+(3*8)+(2*0)+(1*6)=164
164 % 10 = 4
So 1257438-06-4 is a valid CAS Registry Number.

1257438-06-4Relevant academic research and scientific papers

Asymmetric conjugate addition of aldehydes to vinyl sulfone using a diaminomethylenemalononitrile organocatalyst

Kanada, Yohei,Yuasa, Hiroki,Nakashima, Kosuke,Murahashi, Miho,Tada, Norihiro,Itoh, Akichika,Koseki, Yuji,Miura, Tsuyoshi

, p. 4896 - 4899 (2013/09/02)

Diaminomethylenemalononitrile organocatalyst 5 promotes the asymmetric conjugate addition of branched aldehydes to vinyl sulfone to afford the corresponding adducts with all-carbon quaternary stereocenters in excellent yields with up to 91% ee.

Perfluoroalkanesulfonamide organocatalysts for asymmetric conjugate additions of branched aldehydes to vinyl sulfones

Nakashima, Kosuke,Murahashi, Miho,Yuasa, Hiroki,Ina, Mariko,Norihiro, Tada,Itoh, Akichika,Hirashima, Shin-Ichi,Koseki, Yuji,Miura, Tsuyoshi

, p. 14529 - 14542 (2014/01/17)

Asymmetric conjugate additions of branched aldehydes to vinyl sulfones promoted by sulfonamide organocatalyst 6 or 7 have been developed, allowing facile synthesis of the corresponding adducts with all-carbon quaternary stereocenters in excellent yields w

Design of structurally rigid trans -diamine-based Tf-amide organocatalysts with a dihydroanthracene framework for asymmetric conjugate additions of heterosubstituted aldehydes to vinyl sulfones

Moteki, Shin A.,Xu, Senmiao,Arimitsu, Satoru,Maruoka, Keiji

scheme or table, p. 17074 - 17076 (2011/03/01)

Asymmetric conjugate addition of α-heterosubstituted aldehydes such as α-amido and α-alkoxy aldehydes to vinyl sulfone was effected under the influence of structurally rigid trans-diamine-based Tf-amido organocatalyst (S,S)-2 with a dihydroanthracene fram

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