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402741-05-3

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402741-05-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 402741-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,2,7,4 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 402741-05:
(8*4)+(7*0)+(6*2)+(5*7)+(4*4)+(3*1)+(2*0)+(1*5)=103
103 % 10 = 3
So 402741-05-3 is a valid CAS Registry Number.

402741-05-3Relevant articles and documents

Proline catalyzed two-component, three-component and self-asymmetric Mannich reactions promoted by ultrasonic conditions

Kantam, M. Lakshmi,Rajasekhar,Gopikrishna,Rajender Reddy,Choudary

, p. 5965 - 5967 (2006)

The proline catalyzed two-component and three-component asymmetric Mannich reaction with hydroxyacetone and self-Mannich reaction with propanal were performed successfully under ultrasonic conditions in 1 h to afford Mannich products in 90-98% isolated yi

Efficient catalysts for asymmetric Mannich reactions

Rachwalski, Micha?,Leenders, Tim,Kaczmarczyk, Sylwia,Kie?basiński, Piotr,Le?niak, Stanis?aw,Rutjes, Floris P. J. T.

, p. 4207 - 4213 (2013/07/11)

Efficient chiral catalysts for direct asymmetric three-component Mannich reactions of ketones, aldehydes and an amine (p-anisidine) have been developed. The corresponding β-amino carbonyl compounds (Mannich adducts) were obtained in good chemical yields a

2-pyrrolidinecarboxylic acid ionic liquid as a highly efficient organocatalyst for the asymmetric one-pot Mannich reaction

Zheng, Xin,Qian, Yun-Bo,Wang, Yongmei

experimental part, p. 515 - 522 (2010/04/24)

A. novel one-pot: three-component asymmetric Mannich reaction using [EMIm][PrO] (1) as a catalyst has been developed. By employing this new reaction system, a variety of optically active ss-amino carbonyl compounds were synthesized in up to 99% yield with up to >99 dr and >99% ee. The reaction conditions have been optimized and the mechanism for the asymmetric induction is discussed.

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