Events The 22nd International Electronic Conference on Synthetic Organic Chemistry

Event submissions

Published

This submission belongs to the session C. General Organic Synthesis of the event The 22nd International Electronic Conference on Synthetic Organic Chemistry

Published date

14 Nov, 2018

Citation

Victor V. Dotsenko, Vladimir A Dushenko, Nikolai A. Aksenov, Inna V. Aksenova, Evgeniy E Netreba, The first synthesis of [1,2]oxaphosphinino[6,5-c]pyrazoles by thiophosphorylation of 6-aminopyrano[2,3-c]pyrazole-5-carbonitriles, in Proceedings of The 22nd International Electronic Conference on Synthetic Organic Chemistry, 15 November–15 December 2018, MDPI: Basel, Switzerland, doi: 10.3390/ecsoc-22-05680

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The first synthesis of [1,2]oxaphosphinino[6,5-c]pyrazoles by thiophosphorylation of 6-aminopyrano[2,3-c]pyrazole-5-carbonitriles

Victor V. Dotsenko ^1,2,3

Vladimir A Dushenko ¹

Nikolai A. Aksenov ³

Inna V. Aksenova ³

Evgeniy E Netreba ⁴

1. Kuban State University, 149 Stavropolskaya Str., Krasnodar 350040, Russian Federation

2. ChemEx Lab, Vladimir Dal’ Lugansk National University, Lugansk, 91034 Russia.

3. North-Caucasus Federal University, 1 Pushkina St., 355009 Stavropol, Russian Federation

4. V.I. Vernadsky Crimean Federal University, Tavrida Academy, 4 Vernadsky avenue, 295007 Simferopol, Russia

Abstract

The reaction of 6-amino-3-methyl-2,4-dihydropyrano[2,3-c]pyrazole-5-carbonitriles with phosphorus sulfide in boiling pyridine leads to the formation of the unexpected [1,2]oxaphosphinino[6,5-c]pyrazoles. The structure of the products was confirmed by means of 2D NMR spectroscopy and X-ray analysis.

Keywords

thiophosphorylation

phosphorus (V) sulfide

pyrano[2,3-c]pyrazoles

1,2-oxaphosphinine

X-ray structural analysis.

Manuscript

ECSOC 22 2018 oxaphosphinine.pdf

The reaction of 5-amino-3-(cyanomethyl)-1H-pyrazol-4-carbonitrile with beta-cycloketols

Synthesis of 4-(1,3,5-thiadiazinan-2-ylidene)-2-(3,4-dihydro-2H-1,3,5-thiadiazin-6-yl)pent-2-enedinitriles