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1351520-86-9

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1351520-86-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1351520-86-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,1,5,2 and 0 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1351520-86:
(9*1)+(8*3)+(7*5)+(6*1)+(5*5)+(4*2)+(3*0)+(2*8)+(1*6)=129
129 % 10 = 9
So 1351520-86-9 is a valid CAS Registry Number.

1351520-86-9Upstream product

1351520-86-9Downstream Products

1351520-86-9Relevant articles and documents

Iron-copper cooperative catalysis in the reactions of alkyl grignard reagents: Exchange reaction with alkenes and carbometalation of alkynes

Shirakawa, Eiji,Ikeda, Daiji,Masui, Seiji,Yoshida, Masatoshi,Hayashi, Tamio

supporting information; experimental part, p. 272 - 279 (2012/03/07)

Iron-copper cooperative catalysis is shown to be effective for an alkene-Grignard exchange reaction and alkylmagnesiation of alkynes. The Grignard exchange between terminal alkenes (RCH=CH2) and cyclopentylmagnesium bromide was catalyzed by FeCl3 (2.5 mol %) and CuBr (5 mol %) in combination with PBu3 (10 mol %) to give RCH2CH 2MgBr in high yields. 1-Alkyl Grignard reagents add to alkynes in the presence of a catalyst system consisting of Fe(acac)3, CuBr, PBu3, and N,N,N″,N″-tetramethylethylenediamine to give β-alkylvinyl Grignard reagents. The exchange reaction and carbometalation take place on iron, whereas copper assists with the exchange of organic groups between organoiron and organomagnesium species through transmetalation with these species. Sequential reactions consisting of the alkene-Grignard exchange and the alkylmagnesiation of alkynes were successfully conducted by adding an alkyne to a mixture of the first reaction. Isomerization of Grignard reagents from 2-alkyl to 1-alkyl catalyzed by Fe-Cu also is applicable as the first 1-alkyl Grignard formation step.

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