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105337-34-6

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105337-34-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 105337-34-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,5,3,3 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 105337-34:
(8*1)+(7*0)+(6*5)+(5*3)+(4*3)+(3*7)+(2*3)+(1*4)=96
96 % 10 = 6
So 105337-34-6 is a valid CAS Registry Number.

105337-34-6Downstream Products

105337-34-6Relevant articles and documents

Regioselective fries rearrangement and friedel-crafts acylation as efficient routes to novel enantiomerically enriched ortho-acylhydroxy[2.2]paracyclophanes

Rozenberg, Valeria,Danilova, Tat'yana,Sergeeva, Elena,Vorontsov, Evgenii,Starikova, Zoya,Lysenko, Konstantin,Belokon', Yuri

, p. 3295 - 3303 (2007/10/03)

Two useful approaches to ortho-acylhydroxy[2.2]paracyclophanes, starting from 4-hydroxy[2.2]paracyclophane, have been developed. TiCl4-catalyzed Fries rearrangement and direct acylation occur regioselectively (to the ortho position with respect to the hydroxy group), leading to 4-acetyl-5-hydroxy[2.2]paracyclophane (3) and 4-benzoyl-5-hydroxy[2.2]-paracyclophane (4) in high to excellent chemical yields. For compound 4, an X-ray investigation has been performed. ortho-Acylhydroxy[2.2]paracyclophanes 3 and 4 have been obtained in enantiomerically enriched forms (ee 92-99%) and the absolute configurations of their enantiomers have been determined.

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