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1376293-51-4

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1376293-51-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1376293-51-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,7,6,2,9 and 3 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1376293-51:
(9*1)+(8*3)+(7*7)+(6*6)+(5*2)+(4*9)+(3*3)+(2*5)+(1*1)=184
184 % 10 = 4
So 1376293-51-4 is a valid CAS Registry Number.

1376293-51-4Downstream Products

1376293-51-4Relevant articles and documents

N-heterocyclic carbene-catalyzed cascade annulation reaction of o-vinylarylaldehydes with nitrosoarenes: One-step assembly of functionalized 2,3-benzoxazin-4-ones

Sun, Zhong-Xin,Cheng, Ying

, p. 4088 - 4094 (2012/06/15)

The NHC-catalyzed reactions of ortho electron-deficient vinyl substituted arylaldehydes with nitrosoarenes were studied. The reactions produced multifunctional 2,3-benzoxazin-4-ones in good to excellent yields via a cascade aza-benzoin reaction between aldehyde and nitroso groups followed by an intramolecular oxo-Michael addition. The resulting 1-acetate substituted 2,3-benzoxazinones were transformed into a new type of β-hydroxycarboxylate derivatives or 3-oxo-1-isobenzofuranacetates, respectively, under different reductive conditions. This work not only provides a simple and efficient method for the construction of multifunctional 2,3-benzoxazin-4-ones of potential pharmacological interest, but also expands the application of NHC-catalyzed cascade reactions in the formation of carbon-heteroatom and heteroatom- heteroatom bonds.

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