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1206831-83-5

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1206831-83-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1206831-83-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,6,8,3 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1206831-83:
(9*1)+(8*2)+(7*0)+(6*6)+(5*8)+(4*3)+(3*1)+(2*8)+(1*3)=135
135 % 10 = 5
So 1206831-83-5 is a valid CAS Registry Number.

1206831-83-5Downstream Products

1206831-83-5Relevant articles and documents

Tandem catalytic triple-bond cleavage of alkyne in association with aldehyde, alkene, and water

Cha, Kyung-Mi,Jo, Eun-Ae,Jun, Chul-Ho

scheme or table, p. 2939 - 2942 (2010/01/21)

In this tandem reaction the carbon-carbon triple bond of an alkyne is catalytically cleaved in association with aldehyde, al-kene, and H2O under catalyst mixtures of Rh(I), 2-amino-3-picoline, primary amine, and acid. The reaction starts with chelation-assisted hydroacylation of the alkyne with an aldehyde. The retro-Mannich-type fragmentation of the resulting ,α,β-unsaturated ketimine by an amine and acid affords a ketimine and an aldimine, which is trapped by an alkene and give ketones after hydrolysis. Georg Thieme Verlag Stuttgart.

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