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1408231-59-3

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1408231-59-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1408231-59-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,0,8,2,3 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1408231-59:
(9*1)+(8*4)+(7*0)+(6*8)+(5*2)+(4*3)+(3*1)+(2*5)+(1*9)=133
133 % 10 = 3
So 1408231-59-3 is a valid CAS Registry Number.

1408231-59-3Downstream Products

1408231-59-3Relevant articles and documents

A Planar-Chiral Rhodium(III) Catalyst with a Sterically Demanding Cyclopentadienyl Ligand and Its Application in the Enantioselective Synthesis of Dihydroisoquinolones

Trifonova, Evgeniya A.,Ankudinov, Nikita M.,Mikhaylov, Andrey A.,Chusov, Denis A.,Nelyubina, Yulia V.,Perekalin, Dmitry S.

, p. 7714 - 7718 (2018)

The rapid development of enantioselective C?H activation reactions has created a demand for new types of catalysts. Herein, we report the synthesis of a novel planar-chiral rhodium catalyst [(C5H2tBu2CH2tBu)RhI2]2 in two steps from commercially available [(cod)RhCl]2 and tert-butylacetylene. Pure enantiomers of the catalyst were obtained through separation of its diastereomeric adducts with natural (S)-proline. The catalyst promoted enantioselective reactions of aryl hydroxamic acids with strained alkenes to give dihydroisoquinolones in high yields (up to 97 %) and with good stereoselectivity (up to 95 % ee).

RhIII-Catalyzed C?H Activation of Aryl Hydroxamates for the Synthesis of Isoindolinones

Shaaban, Saad,Davies, Caitlin,Merten, Christian,Flegel, Jana,Otte, Felix,Strohmann, Carsten,Waldmann, Herbert

, p. 10729 - 10734 (2020/07/25)

RhIII-catalyzed C?H functionalization reaction yielding isoindolinones from aryl hydroxamates and ortho-substituted styrenes is reported. The reaction proceeds smoothly under mild conditions at room temperature, and tolerates a range of functional groups. Experimental and computational investigations support that the high regioselectivity observed for these substrates results from the presence of an ortho-substituent embedded in the styrene. The resulting isoindolinones are valuable building blocks for the synthesis of bioactive compounds. They provide easy access to the natural-product-like compounds, isoindolobenzazepines, in a one-pot two-step reaction. Selected isoindolinones inhibited Hedgehog (Hh)-dependent differentiation of multipotent murine mesenchymal progenitor stem cells into osteoblasts.

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