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134456-80-7

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134456-80-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134456-80-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,4,5 and 6 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 134456-80:
(8*1)+(7*3)+(6*4)+(5*4)+(4*5)+(3*6)+(2*8)+(1*0)=127
127 % 10 = 7
So 134456-80-7 is a valid CAS Registry Number.

134456-80-7Relevant articles and documents

Reaction of Halo(trimethylsilyl)benzenes with Electrophiles and Bases - Carbodesilylation and Elimination as Competitive Reactions

Effenberger, Franz,Daub, Wolfgang

, p. 2113 - 2118 (2007/10/02)

Eliminationto dehydrobenzenes takes place as competitive reaction in the base-catalyzed carbodesilylation of 1-halo-2-(trimethylsilyl)benzenes 1 with carbonyl compounds 2 in the presence of furans 3, 6.Elimination is preferred with increasing leaving tendency of the halides (I > Br >> Cl >>F) and with decreasing reactivity of the carbonyl compounds.Exclusive elimination to 1,2-didehydrobenzenes - which are trapped with furans - occurs in the reaction when no electrophiles are present. Key Words: Halo(trimethylsilyl)benzenes, carbodesilylation and elimination of / Carbodesilylation / Elimination

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