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101629-95-2

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101629-95-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 101629-95-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,6,2 and 9 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 101629-95:
(8*1)+(7*0)+(6*1)+(5*6)+(4*2)+(3*9)+(2*9)+(1*5)=102
102 % 10 = 2
So 101629-95-2 is a valid CAS Registry Number.

101629-95-2Downstream Products

101629-95-2Relevant articles and documents

Asymmetric Synthesis of α-Methylene-γ-butyrolactones Using Chiral N-Monosubstituted 2-propenamides

Tanaka, Kazuhiko,Yoda, Hidemi,Isobe, Yutaka,Kaji, Aritsune

, p. 1856 - 1866 (2007/10/02)

α-Methylene-γ-butyrolactones were prepared in high yields on treatment of N-monosubstituted 2-propenamides with aldehydes in the presence of a Lewis acid followed by acidic hydrolysis of the resulting γ-hydroxy amides.Asymmetric synthesis of α-methylene-γ-butyrolactones was investigated by using a variety of chiral 2-propenamides derived from optically active amines.Reaction of N--2-propenamide or its antipode with aldehydes in the presence of 4 equiv of TiCl4 gave, after hydrolysis, α-methylene lactones in an enantiometric excess of as high as 80percent.Optically pure 3-methylene-2-pyrrolidinones were obtained in excellent yields by a one-pot sequence starting with the γ-hydroxy amides.

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