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101893-55-4

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101893-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 101893-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,1,8,9 and 3 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 101893-55:
(8*1)+(7*0)+(6*1)+(5*8)+(4*9)+(3*3)+(2*5)+(1*5)=114
114 % 10 = 4
So 101893-55-4 is a valid CAS Registry Number.

101893-55-4Relevant articles and documents

Palladium acetate-catalyzed one-pot synthesis of mono- And disubstitued pyridines

Mikami, Shunya,Toyota, Masahiro

, p. 1315 - 1321 (2019/08/01)

A Pd-catalyzed one-pot synthesis of mono- and disubstituted pyridines was developed. The substituted pyridines were obtained from ketones or an aldehyde and 1,3-diaminopropane using a combination of catalytic Pd(OAc)2 and Cu(OAc)2. High-concentration reaction conditions enabled this catalytic reaction to be acid-free.

Reactions of 1,4-Bis(trimethylsilyl)-1,4-dihydropyridines with Carbonyl Compounds: A New Method for Regioselective Synthesis of 3-Alkylpyridines

Tsuge, Otohiko,Kanemasa, Shuji,Naritomi, Toshio,Tanaka, Junji

, p. 1497 - 1504 (2007/10/02)

A new method for the alkyl group introduction at the 3-position of pyridines is described: Reductive disilylation of pyridine, its 2-methyl, 3-methyl, and 4-methyl derivatives affords the corresponding 1,4-disilyl-1,4-dihydropyridines.Tn the presence of a catalytic amount of tetrabutylammonium fluoride, these dihydropyridines smoothly react with a variety of aldehydes and ketones to give 3-alkylpyridines.

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