cheminform abstract: selective synthesis of some imidazopyridine-fused chromones

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Fu se d p y rid in e d er iva tiv esR 0 4 5 0 D O I: 10 .1 0 02 /c hin .2 0 12 1 0 16 9

Se lec tiv e Sy nthe sis o f So m e I m ida zo py ridine -Fuse d Chr o m one s. — I ntr am o lec u -la r cy c liza tio n o f im in oc h ro me n ylp y rid in ium c hlo rid e s (I) in the p res en c e o f DA BC O p ro v id es a c ce ss to title im id az o py rid in e- fus ed c hr om o n es ( II) in mo d er ate yie ld s. Th e r ea ctio n me c ha n ism is stu d ied in de ta il. — (CO STA, M.; PRO EN CA* , M. F .; Te tra he d ro n 6 7 (2 01 1 ) 4 5, 8 6 2 2-8 6 2 7 , h ttp ://d x.d o i.or g/1 0 .10 1 6 /j.tet.2 0 11 .0 9.0 5 4 ; D ep . Q uim ., Un iv . M inh o , P-4 71 0 Bra g a, Po rt.; En g.) — Misc h ke

10 - 16 9

Ch em I nf o r m 2 012 , 43 , i s sue 1 0 © 201 2 Wi l ey- V C H V er la g G m bH & C o . K G aA , W ei nh eim