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83060-53-1

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83060-53-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83060-53-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,0,6 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 83060-53:
(7*8)+(6*3)+(5*0)+(4*6)+(3*0)+(2*5)+(1*3)=111
111 % 10 = 1
So 83060-53-1 is a valid CAS Registry Number.

83060-53-1Relevant articles and documents

Photosensitized oxygenation of twisted 1,3-dienes: Abnormally higher reactivity of vinyl hydrogen rather than allyl hydrogen toward singlet oxygen

Mori, Hajime,Ikoma, Keiichi,Isoe, Sachihiko,Kitaura, Kazuo,Katsumura, Shigeo

, p. 8704 - 8718 (2007/10/03)

As one of the novel examples to investigate the characteristic reactivity of significantly twisted 1,3-dienes, the photosensitized oxygenation of two types of significantly twisted 1,3-dienes, cis-βionol derivative 2 and acyclic derivative 11, is investigated. Photosensitized oxygenation of 2a-f and 11a-e revealed that the vinyl hydrogen Ha was more reactive than the allyl hydrogen Hb. Thus, phenyl derivative 2e and tert- butyl-substituted compound 11d selectively produced allenes 3e and 13d in 67% and 75% yield resulting from the ene reaction of the vinyl hydrogen Ha rather than allyl alcohols 4e and 14d resulting from the allyl hydrogen abstraction in 24% and 8% yield, respectively. Furthermore, in the case of methyl- substituted compound 11b, the extent of the inherent reactivity of the vinyl hydrogen Ha was similar to that of the allyl hydrogen Hc. On the basis of X- ray analysis and MM and MO calculations, the discovered abnormally higher reactivity of the vinyl hydrogen would be rationalized by considering mainly the large σ*-π orbital interaction between the vinyl C-H bond and another double bond in significantly twisted 1,3-dienes resulting from calculations of HOMO electron densities.

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