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122722-30-9

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122722-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 122722-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,2,7,2 and 2 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 122722-30:
(8*1)+(7*2)+(6*2)+(5*7)+(4*2)+(3*2)+(2*3)+(1*0)=89
89 % 10 = 9
So 122722-30-9 is a valid CAS Registry Number.

122722-30-9Relevant articles and documents

Transition Metal-Catalyzed Radical Cyclizations: A Low-Temperature Process for the Cyclization of N-Protected N-Allyltrichloroacetamides to Trichlorinated γ-Lactams and Application to the Stereoselective Preparation of β,γ-Disubstituted γ-Lactams

Nagashima, Hideo,Ozaki, Nobuyasu,Ishii, Masayuki,Seki, Koji,Washiyama, Masayoshi,Itoh, Kenji

, p. 464 - 470 (2007/10/02)

Cyclisations of N-substituted N-allyltrichloroacetamides, where the substituent is an alkyl, Cbz, Boc, Ts, or Ms group, are catalyzed by a 1:1 mixture of CuCl and bipyridine to give the corresponding β,γ-trichlorinated γ-lactams in high yields.The reactions proceed at temperatures from -78 deg C to room temperature.Cyclizations of N-allyltrichloroacetamides of acyclic secondary allylic amines are achieved with good selectivity; the cis/trans ratios of the γ-lactams formed were dependent on the substituents on the nitrogen atom.The stereochemical outcome is compared with that of free-radical cyclization.

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