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20365-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20365-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,3,6 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20365-21:
73 % 10 = 3
So 20365-21-3 is a valid CAS Registry Number.

20365-21-3Relevant articles and documents

A facile method for the synthesis of substituted 2-ylidene-1,3-oxathioles from acetophenones


, p. 8376 - 8378 (2007)

Compounds incorporating 1,3-oxathiole moieties in their frameworks are biologically active. Active methylene ketones can be easily converted to the corresponding dithiocarboxylates by treatment with trithiocarbonate in the presence of sodium hydride. The

Access to Fully Substituted Thiazoles and 2,3-Dihydrothiazoles via Copper-Catalyzed [4 + 1] Heterocyclization of α-(N-Hydroxy/aryl)imino-β-oxodithioesters with α-Diazocarbonyls

Srivastava, Abhijeet,Shukla, Gaurav,Yadav, Dhananjay,Singh, Maya Shankar

supporting information, p. 10846 - 10854 (2017/10/27)

An efficient chemoselective practical route to fully substituted thiazoles and 2,3-dihydrothiazoles has been devised by [4 + 1] heterocyclization of α-(N-hydroxy/aryl)imino-β-oxodithioesters with in situ generated Cu-carbenoids of diazocarbonyls. The α-(N-hydroxy/aryl)imino-β-oxodithioesters are readily accessible by the reaction of β-oxodithioesters with nitrous acid/nitrosoarenes. The overall transformation involves sequential N-O/C-N bonds cleavage followed by cascade C-N/C-S bonds formation in one-pot. This new strategy allows full control over the introduction of various sensitive functional groups at different positions of the thiazole ring, broadening the arsenal of synthetic methods to obtain such scaffolds.

A one-pot multicomponent synthesis of polysubstituted thiophenes via the reactions of an isocyanide, α-haloketones, and β-ketodithioesters in water

Matloubi Moghaddam, Firouz,Khodabakhshi, Mohammad Reza,Latifkar, Arash

, p. 1251 - 1254 (2014/02/14)

An efficient synthesis of polysubstituted thiophene derivatives is achieved via the multicomponent reaction of β-ketodithioesters, α-haloketones, and cyclohexylisocyanide in aqueous medium.

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