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1618656-71-5

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1618656-71-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1618656-71-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,1,8,6,5 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1618656-71:
(9*1)+(8*6)+(7*1)+(6*8)+(5*6)+(4*5)+(3*6)+(2*7)+(1*1)=195
195 % 10 = 5
So 1618656-71-5 is a valid CAS Registry Number.

1618656-71-5Downstream Products

1618656-71-5Relevant articles and documents

Palladium-catalyzed microwave-assisted direct arylation of imidazo[2,1-b]thiazoles with aryl bromides: Synthesis and mechanistic study

Zhu, Yi-Shuo,Shi, Benyi,Fang, Ran,Wang, Xiaoxuan,Jing, Huanwang

, p. 5773 - 5780 (2014/07/22)

A palladium-catalyzed direct C-H arylation of various imidazo[2,1-b] thiazoles with a range of aryl bromides under microwave irradiation is described. 6-Phenyl substituted imidazo[2,1-b]thiazoles could be regioselectively C-5 arylated using the developed protocol. The utility of this method enables the representative coupling product to be achieved by a sequential one-pot reaction. Density functional theory (DFT) calculations show that this arylation proceeds via a concerted metalation-deprotonation (CMD) pathway, which is in agreement with our experimental results. This work provides a convenient access to a variety of biologically active imidazo[2,1-b]thiazole derivatives. Also, it enriches the mechanism study of site-selective C-H arylation in fused heterocycles, and offers a valuable guide to design highly efficient catalytic systems for the preparation of similar compounds. the Partner Organisations 2014.

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