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1353997-13-3

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1353997-13-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1353997-13-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,3,9,9 and 7 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1353997-13:
(9*1)+(8*3)+(7*5)+(6*3)+(5*9)+(4*9)+(3*7)+(2*1)+(1*3)=193
193 % 10 = 3
So 1353997-13-3 is a valid CAS Registry Number.

1353997-13-3Upstream product

1353997-13-3Downstream Products

1353997-13-3Relevant articles and documents

Development of highly regioselective amidyl radical cyclization based on lone pair-lone pair repulsion

Yuan, Xinting,Liu, Kun,Li, Chaozhong

, p. 6166 - 6171 (2008/12/22)

(Chemical Equation Presented) The substituent effect on the reactivity and regioselectivity of N-(4-pentenyl)amidyl radical cyclization was investigated. Exclusive 6-endo cyclization was observed for N-(4-pentenyl)amidyl radicals with internal vinylic heteroatom substitution (Cl, Br, I, OMe, SEt). The substituent on the carbonyl group also showed a significant influence on the reactivity of amidyl radicals, which increases in the order of Ph a result, the photostimulated reactions of N-(4-halopent-4-enyl)amides and carbamates (X = Cl, Br, I) with DIB/I2 or Pb(OAc)4/I 2 led to the efficient and exclusive formation of the corresponding piperidines while those of N-(5-halopent-4-enyl)amides afforded the pyrrolidine products only. The halogen-substitution effect also allowed the 6-exo and 7-endo amidyl radical cyclization to proceed in a highly regioselective manner. The above experimental results, in combination with theoretical analyses, revealed that the lone pair-lone pair repulsion between the nitrogen radical and the vinylic heteroatom played an important role in controlling the regioselectivity of cyclization.

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