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62134-57-0

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62134-57-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 62134-57-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,2,1,3 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 62134-57:
(7*6)+(6*2)+(5*1)+(4*3)+(3*4)+(2*5)+(1*7)=100
100 % 10 = 0
So 62134-57-0 is a valid CAS Registry Number.

62134-57-0Relevant articles and documents

Rearrangement of 4-(1-haloalkyl)- and 4-(2-haloalkyl)-2-azetidinones into methyl ω-alkylaminopentenoates via transient aziridines and azetidines

Dejaegher, Yves,De Kimpe, Norbert

, p. 5974 - 5985 (2004)

The synthesis of 4-(1-haloalkyl)-2-azetidinones and 4-(2-haloalkyl)-2- azetidinones was investigated with use of the Staudinger reaction between in situ generated ketenes and α-haloimines or β-haloimines. This new class of functionalized 2-azetidinones was further evaluated for its potential use as intermediates in the synthesis of highly functionalized compounds. The reaction of 4-(1-haloalkyl)-2-azetidinones and 4-(2-haloalkyl)-2-azetidinones with sodium methoxide in methanol yielded ring-opened products, i.e., methyl 2-alkoxy-4-(alkylamino)pentenoate and methyl 5-(alkyl-amino)pentenoate, respectively. Further attention was paid in detail to the reaction mechanism involved in this peculiar transformation. It was proven that these reactions proceeded via intermediate aziridines or azetidines.

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