ࡱ>   \bjbjss .(4!.t5KKKK&&&K.M.M.M.M.M.M.$p03q.E&&q.KK.yyyKKK.yK.yys+/-K,6{,7..0.,35.3$/-3/-&:yH TY&&&q.q.c&&&.3&&&&&&&&& : SYNTHESIS and PHOTOCHEMISTRY of 4- and 5-(2-VINYLSTYRYL)OXAZOLES SINTEZA I FOTOKEMIJA 4- I 5-(2-VINILSTIRIL)OKSAZOLA Ivana `agud1, }eljko Marini2, Marija `indler-Kulyk1 1)Zavod za organsku kemiju, Fakultet kemijskog in~enjerstva i tehnologije, Sveu iliate u Zagrebu, Maruliev Trg 19, 10 000 Zagreb, Hrvatska 2)NMR Centar, Institut Ruer Boakovi, Bijeni ka cesta 54, Zagreb, Hrvatska isagud@fkit.hr Jedna od kompleksnijih grana organske kemije je heterocikli ka kemija [1]. Oksazoli su skupina spojeva koji spadaju u skupinu petero lanih aromatskih spojeva a imaju dva heteroatoma u jezgri, kisik i duaik. Vrlo su interesantni jer se pojavljuju u velikom broju u prirodi prisutnih spojeva koji pokazuju visoku bioloaku aktivnost [2, 3].  EMBED ChemDraw.Document.6.0  Novi, do sada neopisani 4 i 5-(2-vinilstiril)oksazoli sintetizirani su u svrhu istra~ivanja njihovih intramolekulskih reakcija u pobuenom stanju. Spojevi su prireeni nizom reakcija. Da bi dobili 5-(2-vinilstiril)oksazol:@FN~   & ( , . : T V X Z ^ ˹sg_T_h.ch_mCJaJh_mCJaJh.ch_mCJH*aJ"hNhsCJ\]aJmHsHh7-h_mH*hqzh7-H* hqzhN hqzh_mhyh_mH* hyhN hyh_m"hyhsCJ\]aJmHsH h6h h6h6"hhsCJ\]aJmH sH  hyhFP hyhwE hyh6 X Z r ( * , . $a$gdnY$a$gdBO$a$gd?$a$gdD$$a$gd$a$gd$a$gd_m$a$gdy  ` p r v ( * , . > @ * @ B V X f h j x   4 p r ȽyqhCJaJh|CJaJhcDCJaJh9CJaJhAhftCJaJhAh|CJaJhftCJaJhfE|hCJ\]aJhCJ\]aJ hCJhyhNCJaJh.ch_mCJH*aJh.ch_mCJaJh_mCJaJh _CJaJ, &Jv>@B8T\¾¯ynnldYNhzh[CJaJhzhb{0CJaJh<CJaJUhzhD$CJaJhzhXQyCJaJhzh_#CJaJhzh6CJaJhzhBOCJaJh?CJmH sH hBOjDBtT h?UVh?jh?UhBOCJaJhFPCJaJhcDCJaJhAhcDCJaJhAh|CJaJhCJaJ u zadovoljavajuoj koli ini razvijena su dva razli ita sintetska puta [4, 5]. Dobiveni izomeri osvjetljavani su u fotokemijskom reaktoru u cilju sinteze novih policikli kih spojeva te studije utjecaja polo~aja heteroatoma na intramolekulske reakcije cikloadicije i ciklizacije. Svi novi heterocikli ki derivati okarakteriztirani su modernim spektroskopskim metodama. Literatura: [1] A.Katrizky, C. Rees, Comprehensive oxazole and bis-oxazole heterocyclic chemistry, 1984, Volume 6, 177 - 234 [2] V. S. C. Yeh, Tetrahedron 60 (2004) 11995  12042. [3] P. Wipf, Chemical Review 95 (1995) 2115  2134. [4] J. A. Bull, E. P. Balskus, R. A. J. Horan, M. Langner, S. V. Ley, Chem. Eur. J. 13 (2007) 5515-5538. [5] J. T. Reeves, J. J. Song, Z. Tan, H. Lee, N. K. Yee, C. H. Senanayake, Org. 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