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1381757-95-4

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1381757-95-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1381757-95-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,8,1,7,5 and 7 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1381757-95:
(9*1)+(8*3)+(7*8)+(6*1)+(5*7)+(4*5)+(3*7)+(2*9)+(1*5)=194
194 % 10 = 4
So 1381757-95-4 is a valid CAS Registry Number.

1381757-95-4Downstream Products

1381757-95-4Relevant articles and documents

New synthesis of multi-substituted α-chlorocyclobutanones from 1-chloro-3-cyanoalkyl p-tolyl sulfoxides by 4-Exo-Dig nucleophilic ring closure of magnesium carbenoids to nitrile group as the key reaction

Saitoh, Hideki,Sampei, Taro,Kimura, Tsutomu,Kato, Yuichi,Ishida, Naoyuki,Satoh, Tsuyoshi

scheme or table, p. 3004 - 3008 (2012/07/31)

1-Chloro-3-cyanoalkyl p-tolyl sulfoxides were easily prepared from 1-chlorovinyl p-tolyl sulfoxides, which were synthesized from carbonyl compounds and chloromethyl p-tolyl sulfoxide, with lithium α-cyano carbanion of acetonitrile derivatives in good yields. Treatment of these sulfoxides with i-PrMgCl resulted in the formation of multi-substituted α- chlorocyclobutanones in good to high yields via the 4-Exo-Dig nucleophilic ring closure of the generated magnesium carbenoid intermediates to the nitrile group. This procedure provides a new and good way for the synthesis of multi-substituted α-chlorocyclobutanones from carbonyl compounds and substituted acetonitriles with formation of three carbon-carbon bonds in relatively short steps.

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