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29481-98-9

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29481-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29481-98-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,4,8 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 29481-98:
(7*2)+(6*9)+(5*4)+(4*8)+(3*1)+(2*9)+(1*8)=149
149 % 10 = 9
So 29481-98-9 is a valid CAS Registry Number.

29481-98-9Relevant articles and documents

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Mirrington,R.N.,Schmalzl,K.J.

, p. 2358 - 2363 (1969)

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Oxidative Generation of 1-Nitroalkyl Radicals and Their Addition Reaction to Olefins

Arai, Noriyoshi,Narasaka, Koichi

, p. 2525 - 2534 (2007/10/03)

1-Nitroalkyl radicals are generated by oxidation of potassium salt of 1-aci-nitroalkanes with ammonium hexanitratocerate(IV). When the oxidation is carried out in the presence of electron-rich olefins, such as silyl enol ethers, intermolecular addition of the radicals onto the olefins proceeds to afford β-nitro ketones, which are further converted to α,β-unsaturated ketones in high yield. Stereoselective construction of fused ring systems is achieved by intramolecular addition of 1-nitroalkyl radicals.

Regioselective Synthesis of Substituted Bicyclooct-3-ene-2,8-diones via Double Carbonylation of 1,3-Cyclohexadienes

Eilbracht, Peter,Jelitte, Ruediger,Trabold, Peter

, p. 169 - 181 (2007/10/02)

Double carbonylation of 1,3-cyclohexadienes 1 is applied to the synthesis of substituted bicyclooct-3-ene-2,8-diones 4.The Lewis acid mediated ring enlargement of substituted cyclohexadiene complexes 2 produces the cycloheptanone alkyl allyl complexes 3 with high regioselectivity.Substituted bicyclic diketones 4 are obtained in high yields by treating the complexes 3 with carbon monoxide under pressure or by oxidative decomposition.The two carbonylation steps can also be performed in a one-pot version.

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