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1219198-88-5

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1219198-88-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1219198-88-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,9,1,9 and 8 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1219198-88:
(9*1)+(8*2)+(7*1)+(6*9)+(5*1)+(4*9)+(3*8)+(2*8)+(1*8)=175
175 % 10 = 5
So 1219198-88-5 is a valid CAS Registry Number.

1219198-88-5Relevant articles and documents

Synthesis of 3-Hydroxymethyl Isoindolinones via Cobalt-Catalyzed C(sp2)-H Carbonylation of Phenylglycinol Derivatives

Lukasevics, Lukass,Cizikovs, Aleksandrs,Grigorjeva, Liene

, p. 2720 - 2723 (2020)

An efficient method for the synthesis of 3-hydroxymethyl isoindolinones via cobalt-catalyzed C(sp2)-H carbonylation of phenylglycinol derivatives using picolinamide as a traceless directing group is demonstrated. The reaction proceeds in the presence of a commercially available cobalt(II) tetramethylheptanedionate catalyst and employs DIAD as a "CO" surrogate. This synthetic route offers a broad substrate scope, excellent regioselectivity, and full preservation of the original stereochemistry. Besides, the developed method provides a pathway for accessing valuable enantiopure 3-substituted isoindolinone derivatives.

Triple role of phenylselenonyl group enabled a one-pot synthesis of 1,3-oxazinan-2-ones from α-isocyanoacetates, phenyl vinyl selenones, and water

Buyck, Thomas,Wang, Qian,Zhu, Jieping

supporting information, p. 11524 - 11528 (2014/10/15)

Reaction of α-substituted α-isocyanoacetates with phenyl vinyl selenones in the presence of a catalytic amount of base (DBU or Et3N, 0.05-0.1 equiv) followed by addition of p-toluenesulfonic acid (PTSA, 0.1-0.2 equiv) afforded 4,4,5-trisubstituted 1,3-oxazinan-2-ones in good to excellent yields. Enantiomerically enriched heterocycles can also be prepared using a Cinchona alkaloid-derived bifunctional organocatalyst for the Michael addition step. The phenylselenonyl group served as an activator for the Michael addition, a leaving group and a latent oxidant in this integrated reaction sequence.

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