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103174-02-3

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103174-02-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103174-02-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,1,7 and 4 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 103174-02:
(8*1)+(7*0)+(6*3)+(5*1)+(4*7)+(3*4)+(2*0)+(1*2)=73
73 % 10 = 3
So 103174-02-3 is a valid CAS Registry Number.

103174-02-3Downstream Products

103174-02-3Relevant articles and documents

Metal-mediated carbonyl-1,3-butadien-2-ylation by 1,4-bis(methanesulfonyl)-2-butyne or 1,4-dibromo-2-butyne in aqueous media: Asymmetric synthesis of 3-substituted 3-hydroxy-β-lactams

Alcaide, Benito,Almendros, Pedro,Rodriguez-Acebes, Raquel

, p. 1925 - 1928 (2002)

Metal-mediated 1,3-butadien-2-ylation reactions between 1,4-dibromo-2-butyne or 1,4-bis(methane-sulfonyl)-2-butyne and optically pure azetidine-2,3-diones were investigated in aqueous media, offering a convenient asymmetric entry to the potentially bioactive 3-substituted 3-hydroxy-β-lactam moiety. The diastereoselectivity of the addition reaction was controlled by the bulky chiral auxiliary at C4. However, while the regioselectivity of the process was full, the chemical yield of the addition was a function of the nature of both the metal reagent and the system solvent as well. In addition, 2-azetidinone-tethered 1,3-butadienes can easily be transformed into other functionalities via Diels-Alder reaction.

Stereoselective synthesis of-lactams under diverse conditions: Unprecedented Observations

Das, Aparna,Bose, Ajay K.,Banik, Bimal Krishna

, p. 917 - 925 (2020/12/04)

ferent reaction conditions have been used for this study. It is important to note that the stereochemistry of the-lactam formation reaction depends on the conditions of the experiments, structures of the imines and acid chlorides, order of addition of the

N1-C4 β-lactam bond cleavage in the 2-(trimethylsilyl)thiazole addition to β-lactam aldehydes: Asymmetric synthesis of spiranic and tertiary α-alkoxy-γ-keto acid derivatives

Alcaide, Benito,Almendros, Pedro,Redondo, Maria C.

, p. 3707 - 3710 (2008/03/18)

Starting substrates, enantiopure spiranic or 3-substituted 3-alkoxy-4-oxoazetidine-2-carbaldehydes, were prepared from (R)-2,3-O- isopropylideneglyceraldehyde derived azetidine-2,3-diones by sequential Barbier-type addition reactions followed by hydroxy f

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