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Reactivity of 3H-1,2,4-dithiazole-3-thiones and 3H-1,2-dithiole-3-thiones as sulfurizing agents for oligonucleotide synthesis

โœ Scribed by Andrei P. Guzaev

Publisher
Elsevier Science
Year
2011
Tongue
French
Weight
315 KB
Volume
52
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

The reactivity of 5-amino-3H-1,2,4-dithiazole-3-thiones substituted at their amino group and 5-amino-3H-1,2-dithiole-3-thiones substituted at their amino group and C4 toward compounds containing P(III) atoms has been studied. N,N-Disubstituted-N 0 -(3-thioxo-3H-1,2,4-dithiazol-5-yl)methanimidamides were selected as novel efficient sulfur transfer reagents suitable for DNA and RNA synthesis.

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5-Amino-3H-1,2,4-dithiazole-3-thione as
5-Amino-3H-1,2,4-dithiazole-3-thione as a synthon: New synthesis of 2-thioureidobenzheteroazoles
โœ N. R. Krishnaswamy; C. N. Sundaresan; P. N. K. Nambisan; K. Sandya ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 284 KB

## Abstract New and efficient one pot syntheses of 2โ€thioureidobenzimidazole (__V__), 2โ€thioureidobenzoxazole (__VI__), and 2โ€thioureidobenzothiazole (__VII__) have been developed. The target compounds were obtained in good yields by condensing the title synthon commonly known as isoperthiocyanic a

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Reacdan of 3-oxo diddoic acids with a canbhtion of hemmcthyhiisi~thianc and N-chlorosuccinimidc in the pnxence of a camlyric amount of imiile brings about oxidative ring closure to 3H-l&ditiib3-thiones. Yieldsvmyfnnnpocctogood.