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1246523-57-8

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1246523-57-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1246523-57-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,6,5,2 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1246523-57:
(9*1)+(8*2)+(7*4)+(6*6)+(5*5)+(4*2)+(3*3)+(2*5)+(1*7)=148
148 % 10 = 8
So 1246523-57-8 is a valid CAS Registry Number.

1246523-57-8Relevant articles and documents

Concise syntheses of dictyodendrins A and F by a sequential C-H functionalization strategy

Yamaguchi, Atsushi D.,Chepiga, Kathryn M.,Yamaguchi, Junichiro,Itami, Kenichiro,Davies, Huw M. L.

, p. 644 - 647 (2015)

Syntheses of dictyodendrins A and F have been achieved using a sequential C-H functionalization strategy. The N-alkylpyrrole core is fully functionalized by means of a rhodium(I)-catalyzed C-H arylation at the C3-position, a rhodium(II)-catalyzed double C-H insertion at the C2- and C5-positions, and a Suzuki-Miyaura cross-coupling reaction at the C4-position. The syntheses of dictyodendrins A and F were completed by formal 6π-electrocyclization to generate the pyrrolo[2,3-c]carbazole core of the natural products.

Total synthesis of dictyodendrin A and B

Okano, Kentaro,Fujiwara, Hideto,Noji, Toshiharu,Fukuyama, Tohru,Tokuyama, Hidetoshi

supporting information; experimental part, p. 5925 - 5929 (2010/10/03)

(Figure Presented) In-do-line of fire: A highly efficient total synthesis of the title compounds features a novel benzyne-mediated one-pot indoline formation/cross-coupling sequence for the construction of a highly substituted key indoline intermediate. The peripheral substituents were then introduced onto the intermediate in a modular fashion to complete the total syntheses of dictyodendrin A and B.

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