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126275-15-8

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126275-15-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 126275-15-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,6,2,7 and 5 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 126275-15:
(8*1)+(7*2)+(6*6)+(5*2)+(4*7)+(3*5)+(2*1)+(1*5)=118
118 % 10 = 8
So 126275-15-8 is a valid CAS Registry Number.

126275-15-8Relevant articles and documents

Ruthenium-catalyzed intramolecular arene C(sp2)-H amidation for synthesis of 3,4-dihydroquinolin-2(1 H)-ones

Au, Chi-Ming,Ling, Cho-Hon,Sun, Wenlong,Yu, Wing-Yiu

supporting information, p. 3310 - 3314 (2021/05/29)

We report the [Ru(p-cymene)(l-proline)Cl] ([Ru1])-catalyzed cyclization of 1,4,2-dioxazol-5-ones to form dihydroquinoline-2-ones in excellent yields with excellent regioselectivity via a formal intramolecular arene C(sp2)-H amidation. The reactions of the 2- and 4-substituted aryl dioxazolones proceeds initially through spirolactamization via electrophilic amidation at the arene site, which is para or ortho to the substituent. A Hammett correlation study showed that the spirolactamization is likely to occur by electrophilic nitrenoid attack at the arene, which is characterized by a negative ρ value of -0.73.

Lipase catalysed kinetic resolutions of 3-aryl alkanoic acids

Deasy, Rebecca E.,Brossat, Maude,Moody, Thomas S.,Maguire, Anita R.

experimental part, p. 47 - 61 (2011/04/18)

Hydrolase catalysed kinetic resolutions leading to a series of 3-aryl alkanoic acids (≥94% ee) are described. Hydrolysis of the ethyl esters with a series of hydrolases was undertaken to identify biocatalysts that yield the corresponding acids with excellent enantiopurity in each case. Steric and electronic effects on the efficiency and enantioselectivity of the biocatalytic transformation were also explored.

Stereocontrol in the intramolecular Buchner reaction of diazoketones

Maguire, Anita R.,Buckley, N. Rachael,O'Leary, Patrick,Ferguson, George

, p. 4077 - 4091 (2007/10/03)

Rhodium(II) acetate catalysed intramolecular Buchner cyclisation of a series of diazoketones 1 proceeds with excellent diastereoselectivity to produce the trans substituted azulenones 2, which exist as a rapidly equilibrating cycloheptatriene-norcaradiene system, from which the norcaradiene tautomers can be efficiently trapped as PTAD cycloadducts 4. The cyclisation-cycloaddition sequence can be conducted in either a stepwise or a tandem process, leading to the pentacyclic systems 4 as a single diastereomer in each case. In the reaction of diazoketone If intramolecular cyclopropanation competes with cyclisation to the aromatic ring.

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