Two Approaches to the Transformation of (Benzimidazol-2-ylmethyl)triphenylphosphonium Chloride into the Derivatives of Pyrimido[1,6-a]benzimidazole View Full Text


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Article Info

DATE

2002-11

AUTHORS

O. B. Smolii, L. V. Muzychka, A. N. Chernega, B. S. Drach

ABSTRACT

The reaction of readily accessible (benzimidazol-2-ylmethyl)triphenylphosphonium chloride with acyl isothiocyanates in the presence of triethylamine, as well as consecutive treatment of the above phosphonium salt first with N,N-dimethylformamide dimethyl acetal and then with phenyl or allyl isothiocyanate gives two types of phosphorus-containing derivatives of pyrimido[1,6-a]benzimidazole with the thione group in position 3 or 1 of the condensed system. The structure of one of compounds of the first type, 3-thioxo-1-p-tolyl-3,4-dihydropyrimido[1,6-a]benzimidazol-4-ylidenetriphenylphosphorane, was determined by single crystal X-ray diffraction. More... »

PAGES

1703-1708

Identifiers

URI

http://scigraph.springernature.com/pub.10.1023/a:1023328910321

DOI

http://dx.doi.org/10.1023/a:1023328910321

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1020788805


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