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206987-22-6

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206987-22-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 206987-22-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,9,8 and 7 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 206987-22:
(8*2)+(7*0)+(6*6)+(5*9)+(4*8)+(3*7)+(2*2)+(1*2)=156
156 % 10 = 6
So 206987-22-6 is a valid CAS Registry Number.

206987-22-6Downstream Products

206987-22-6Relevant articles and documents

Thermal and lewis acid catalyzed intramolecular ene reactions of allenylsilanes

Weinreb, Steven M.,Smith, Daniel T.,Jin, Jian

, p. 509 - 521 (2007/10/03)

Intramolecular ene reactions of allenylsilanes can be effected with a variety of imines, aldehydes and alkenes as enophiles, forming five and six membered rings. These reactions are cis stereoselective in all cases studied, and appear to proceed via a concerted, pericyclic process. The cycloadditions all generally occur under mild thermal conditions and some involving imino enophiles can also be effected at lower temperatures using Lewis acid catalysis.

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