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41719-63-5

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41719-63-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 41719-63-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,1,7,1 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 41719-63:
(7*4)+(6*1)+(5*7)+(4*1)+(3*9)+(2*6)+(1*3)=115
115 % 10 = 5
So 41719-63-5 is a valid CAS Registry Number.

41719-63-5Downstream Products

41719-63-5Relevant articles and documents

Degradation of oral antidiabetics, I: Reactions of arylsulfonylureas with carboxylic acid

Egg,Ganzera,Leibetseder,et al.

, p. 682 - 690 (1986)

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Asymmetric aldol reactions. A new camphor-derived chiral auxiliary giving highly stereoselective aldol reactions of both lithium and titanium(IV) enolates

Bonner, Mary Pat,Thornton, Edward R.

, p. 1299 - 1308 (2007/10/02)

A new, conformationally rigid camphor-derived N-propionyloxazolidinone effects asymmetric stereochemical control in syn-selective aldol condensations of the derived lithium and titanium(IV) enolates with a variety of aldehydes. Simple and diastereofacial selectivities of the reaction are high, and diastereomeric purities of the crude aldol adducts can be improved, usually by a single recrystallization, to levels of 98-99% in most cases. The observed facial selectivity is best explained by a transition structure in which intramolecular chelation between the oxazolidinone carbonyl oxygen and the metal induces an enolate π-facial differentiation; the major products observed are those expected from chelation control. Hydrolysis of the exocyclic carbonyl of the aldol adducts led to β-hydroxy-α-methylcarboxylic acids, with recovery of the chiral auxiliary. Consonant double-asymmetric induction with (R)-2-(benzyloxy)propanal gave the product expected from oxazolidinone chelation but nonchelation of the aldehyde benzyloxy group.

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