Fused pyrimidine systems: XV. Intramolecular electrophilic cyclization of 2-allyl(propargyl, cinnamyl)amino-pyrido[2,3-d]pyrimidin-4(3H)-ones View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2015-04

AUTHORS

R. I. Vas’kevich, I. V. Dyachenko, A. I. Vas’kevich, E. B. Rusanov, M. V. Vovk

ABSTRACT

2-(Allylamino)- and 2-(propargylamino)pyrido[2,3-d]pyrimidin-4(3H)-ones underwent intramolecular cyclization on heating in polyphosphoric acid to give angularly fused imidazo[1,2-a]pyrido[3,2-e]pyrimidin-5-ones. The cyclization of 2-(cinnamylamino)pyrido[2,3-d]pyrimidin-4(3H)-one under analogous conditions afforded linearly fused 4-phenyl-1,2,3,4-tetrahydro-6H-pyrido[2,3-d]pyrimido[1,2-a]pyrimidin-6-one. 2-(Allylamino)pyrido[2,3-d]pyrimidin-4(3H)-one reacted with iodine yielding 9-(iodomethyl)-8,9-dihydroimidazo[1,2-a]pyrido[3,2-e]pyrimidin-5(7H)-one as the major product, 2-(propargylamino)pyrido[2,3-d]pyrimidin-4(3H)-one gave rise to iodine addition product to the triple bond, and angularly fused 9-iodo-10-phenyl-7,8,9,10-tetrahydro-5H-pyrido[3,2-e]pyrimido[1,2-a]pyrimidin-5-one was obtained from the 2-(cinnamylamino) derivative. Electrophilic cyclization of 2-(allylamino)- and 2-(cinnamylamino)pyrido[2,3-d]pyrimidin-4(3H)-ones by the action of phenylsulfanyl chloride led to the formation of angularly fused 9-(phenylsulfanylmethyl)-8,9-dihydroimidazo[1,2-a]pyrido[3,2-e]pyrimidin-5(7H)-one and 10-phenyl-9-phenylsulfanyl-7,8,9,10-tetrahydro-5H-pyrido[3,2-e]pyrimido[1,2-a]pyrimidin-5-one. More... »

PAGES

556-565

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1070428015040168

DOI

http://dx.doi.org/10.1134/s1070428015040168

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1031124870


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