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312326-18-4

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312326-18-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 312326-18-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,1,2,3,2 and 6 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 312326-18:
(8*3)+(7*1)+(6*2)+(5*3)+(4*2)+(3*6)+(2*1)+(1*8)=94
94 % 10 = 4
So 312326-18-4 is a valid CAS Registry Number.

312326-18-4Relevant articles and documents

Is an iodine atom almighty as a leaving group for Bu3SnH-mediated radical cyclization? The effect of a halogen atom on the 5-endo-trig radical cyclization of N-vinyl-α-halo amides

Tamura, Osamu,Matsukida, Hana,Toyao, Atsushi,Takeda, Yoshifumi,Ishibashi, Hiroyuki

, p. 5537 - 5545 (2007/10/03)

The effect of a halogen atom as a leaving group on Bu3SnH-mediated 5-endo-trig radical cyclization of N-(cyclohex-1-enyl) α-halo amides was examined. The cyclization of α-chloro amides occurred with a high degree of efficiency, whereas the corresponding α-iodo congeners gave only limited quantities of cyclization products. A detailed study revealed that these phenomena could be attributed to the initial conformations of α-halo amides. The cyclizing ability of α-iodo amides can be restored with Bu3SnCl or Bu3SnF as an additive. The cyclization of an α-iodo amide in the presence of Bu3SnF could be applied to a short-step synthesis of lycoranes featuring sequential 5-endo-trig and 6-endo-trig radical cyclizations.

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