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1233735-48-2

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1233735-48-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1233735-48-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,3,7,3 and 5 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1233735-48:
(9*1)+(8*2)+(7*3)+(6*3)+(5*7)+(4*3)+(3*5)+(2*4)+(1*8)=142
142 % 10 = 2
So 1233735-48-2 is a valid CAS Registry Number.

1233735-48-2Relevant articles and documents

Catalytic Enantioselective Oxidative Homocoupling of 2-Acyl Imidazoles

Demirel, Nemrud,Qin, Jie,Ivlev, Sergei I.,Harms, Klaus,Meggers, Eric

, p. 4695 - 4700 (2021)

A diastereoselective and enantioselective construction of 2,3-disubstituted 1,4-dicarbonyl compounds is reported. Nishiyama's RuPhebox complex (2.0 mol% catalyst loading) serves as a chiral Lewis acid catalyst in conjunction with BrCCl3 and a base for the oxidative homocoupling of 2-acyl imidazoles via the stereocontrolled reaction of intermediate Ru enolates with in situ brominated 2-acyl imidazoles. Cleavage of the achiral imidazole auxiliary provides optically active 2,3-disubstituted succinic acids which are useful intermediates in the synthesis of chiral compounds like the natural product class of lignans. (Figure presented.).

Catalytic Enantioselective α-Fluorination of 2-Acyl Imidazoles via Iridium Complexes

Xu, Guo-Qiang,Liang, Hui,Fang, Jie,Jia, Zhi-Long,Chen, Jian-Qiang,Xu, Peng-Fei

supporting information, p. 3355 - 3358 (2016/12/09)

The first highly enantioselective α-fluorination of 2-acyl imidazoles utilizing iridium catalysis has been accomplished. This transformation features mild conditions and a remarkably broad substrate scope, providing an efficient and highly enantioselective approach to obtain a wide range of fluorine-containing 2-acyl imidazoles which are found in a variety of bioactive compounds and prodrugs. A large scale synthesis has also been tested to demonstrate the potential utility of this fluorination method.

Enantioselective, catalytic trichloromethylation through visible-light-activated photoredox catalysis with a chiral iridium complex

Huo, Haohua,Wang, Chuanyong,Harms, Klaus,Meggers, Eric

supporting information, p. 9551 - 9554 (2015/08/18)

An enantioselective, catalytic trichloromethylation of 2-acyl imidazoles and 2-acylpyridines is reported. Several products are formed with enantiomeric excess of ≥99%. In this system, a chiral iridium complex serves a dual function, as a catalytically active chiral Lewis acid and simultaneously as a precursor for an in situ assembled visible-light-triggered photoredox catalyst.

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