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392690-75-4

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392690-75-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 392690-75-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,2,6,9 and 0 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 392690-75:
(8*3)+(7*9)+(6*2)+(5*6)+(4*9)+(3*0)+(2*7)+(1*5)=184
184 % 10 = 4
So 392690-75-4 is a valid CAS Registry Number.

392690-75-4Downstream Products

392690-75-4Relevant articles and documents

Synthesis of Glycoborine, Glybomine A and B, the Phytoalexin Carbalexin A and the β-Adrenoreceptor Antagonists Carazolol and Carvedilol

Brütting, Christian,Hesse, Ronny,J?ger, Anne,Kataeva, Olga,Schmidt, Arndt W.,Kn?lker, Hans-Joachim

, p. 16897 - 16911 (2016)

We describe a regioselective synthesis of 4- or 5-substituted carbazoles by oxidative cyclisation of meta-oxygen-substituted N-phenylanilines. Using the regiodirecting effect of a pivaloyloxy group, we prepared 4-hydroxycarbazole, a precursor for the enantiospecific synthesis of the β-adrenoreceptor antagonists (?)-(S)-carazolol (5) and (?)-(S)-carvedilol (6). Regioselective palladium(II)-catalysed cyclisation of different diarylamines led to total synthesis of glycoborine (7) and the first total syntheses of the phytoalexin carbalexin A (8), glybomine A (9) and glybomine B (10). For glybomine B (10), a 5-hydroxycarbazole was converted into the corresponding triflate and utilized for introduction of a prenyl substituent.

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