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109201-46-9

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109201-46-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109201-46-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,2,0 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 109201-46:
(8*1)+(7*0)+(6*9)+(5*2)+(4*0)+(3*1)+(2*4)+(1*6)=89
89 % 10 = 9
So 109201-46-9 is a valid CAS Registry Number.

109201-46-9Downstream Products

109201-46-9Relevant articles and documents

Unusual C-6 lithiation of 2-chloropyridine-mediated by BuLi-Me2N(CH2)2OLi. New access to 6-functional-2-chloropyridines and chloro-bis-heterocycles

Choppin, Sabine,Gros, Philippe,Fort, Yves

, p. 803 - 805 (2000)

Formula Presented The reaction of 2-chloropyridine with alkylithium generally results in nucleophilic addition leading to the loss of chlorine atom while exclusive directed ortho metalation is obtained using LDA. Herein it is shown that the BuLi-Me2

IPSO-SUBSTITUTION REACTIONS OF 2- AND 4-SULFONYLPYRIDINES WITH GRIGNARD REAGENTS

Furukawa, Naomichi,Tsuruoka, Masayuki,Fujihara, Hisashi

, p. 3337 - 3340 (2007/10/02)

The reactions of 2-sulfonylpyridines with Grignard reagents proceeded via an ionic path to give only the corresponding ipso-substitution products, while 4-sulfonylpyridines afforded mainly a mixture of both the substitution and coupling products on treatment with Grignard reagents.

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