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29584-68-7

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29584-68-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29584-68-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,5,8 and 4 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 29584-68:
(7*2)+(6*9)+(5*5)+(4*8)+(3*4)+(2*6)+(1*8)=157
157 % 10 = 7
So 29584-68-7 is a valid CAS Registry Number.

29584-68-7Relevant articles and documents

INTRAMOLECULAR CYCLIZATION OF ALLYLIC PROPIOLATES MEDIATED BY THE ADDITION OF STANNYL RADICALS: A NEW SYNTHETIC ROUTE TO α-METHYLENE-γ-BUTYROLACTONES

Lee, Eun,Ko, Sung Bo,Jung, Kyung Woon,Chang, Moon Ho

, p. 827 - 828 (1989)

Allylic propiolates react with tributyl- or triphenylstannane to yield α-(stannyl)methylene-γ-butyrolactones. α-Methylene-γ-butyrolactones are easily prepared by destannylation.

Stereoselective Synthesis of α-(Chloromethylene)-γ-butyrolactone Derivatives from Acyclic Allylic 2-Alkynoates

Ma, Shengming,Lu, Xiyan

, p. 1245 - 1250 (2007/10/02)

α-Methylene-γ-butyrolactones have been constructed by a bis(benzonitrile)palladium dichloride catalyzed cyclization reaction of the easily available acyclic 2'-alkenyl 2-alkynoates in the presence of CuCl2.A mechanism involving a stereoselective chloropalladation in the presence of CuCl2, followed by intramolecular insertion of a carbon-carbon double bond to the carbon-palladium bond, and subsequent CuCl2-mediated formation of a new carbon-chlorine bond is briefly discussed.

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