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34743-34-5

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34743-34-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 34743-34-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,4,7,4 and 3 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 34743-34:
(7*3)+(6*4)+(5*7)+(4*4)+(3*3)+(2*3)+(1*4)=115
115 % 10 = 5
So 34743-34-5 is a valid CAS Registry Number.

34743-34-5Relevant articles and documents

N -Heterocyclic carbene (NHC) catalyzed amidation of aldehydes with amines via the tandem N -hydroxysuccinimide ester formation

Singh, Ashmita,Narula

, p. 7486 - 7490 (2021/05/13)

A facile method for the amidation of aldehydes by a cascade approach was developed. This methodology, reported for the first time, uses a N-heterocyclic carbene (NHC) as the catalyst, and N-hydroxysuccinimide (NHS) mediated synthesis of amides utilising TBHP as the oxidant. Various substituted aldehydes reacted smoothly with NHS giving the corresponding active esters in moderate to good yields, which facilely converted into amides in one pot. In addition, the drug moclobemide was synthesized to represent the practical utility of the developed methodology. This journal is

A palladium-catalyzed carbonylation approach to acid chloride synthesis

Quesnel, Jeffrey S.,Arndtsen, Bruce A.

supporting information, p. 16841 - 16844 (2013/12/04)

We describe a new approach to acid chloride synthesis via the palladium-catalyzed carbonylation of aryl iodides. The combination of sterically encumbered phosphines (PtBu3) and CO coordination has been found to facilitate the rapid carbonylation of aryl iodides into acid chlorides via reductive elimination from (tBu3P)(CO) Pd(COAr)Cl. The formation of acid chlorides can also be exploited to perform traditional aminocarbonylation reactions under exceptionally mild conditions (ambient temperature and pressure), and with a range of weakly nucleophilic substrates.

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