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In Targets in Heterocyclic Systems, Chemistry and Properties; Attanasi, O. A., Spinelli, D., Eds.; Italian Society of Chemistry: Rome, 2000; Vol. 4, pp1\u201323.","key":"ref1\/cit1a"},{"key":"ref1\/cit1b","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1351\/pac200173010187","volume":"73","author":"Ugi I.","year":"2001","journal-title":"Pure Appl. Chem."},{"key":"ref1\/cit1c","doi-asserted-by":"crossref","first-page":"899","DOI":"10.1021\/ar020258p","volume":"36","author":"Nair V.","year":"2003","journal-title":"Acc. Chem. Res."},{"key":"ref1\/cit1d","doi-asserted-by":"crossref","first-page":"1602","DOI":"10.1002\/anie.200460548","volume":"44","author":"Ram\u00f3n D. J.","year":"2005","journal-title":"Angew. Chem., Int. Ed. Engl."},{"key":"ref1\/cit1e","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1021\/cr0505728","volume":"106","author":"D\u00f6mling A.","year":"2006","journal-title":"Chem. 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Chem. Lett."},{"key":"ref6\/cit6","doi-asserted-by":"crossref","first-page":"9215","DOI":"10.1002\/anie.200704051","volume":"46","author":"Bulic B.","year":"2007","journal-title":"Angew. Chem., Int. Ed. Engl."},{"key":"ref7\/cit7","doi-asserted-by":"crossref","first-page":"9499","DOI":"10.1073\/pnas.0502733102","volume":"102","author":"Forino M.","year":"2005","journal-title":"Proc. Natl. Acad. Sci. U.S.A."},{"key":"ref8\/cit8","doi-asserted-by":"crossref","first-page":"5529","DOI":"10.1021\/ol802286g","volume":"10","author":"Hu M.","year":"2008","journal-title":"Org. Lett."},{"unstructured":"For selected examples of multicomponent approaches in the synthesis of rhodanine-related structures, see:","key":"ref9\/cit9"},{"key":"ref9\/cit9a","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1021\/cc020119z","volume":"5","author":"Takasu K.","year":"2003","journal-title":"J. Comb. 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Chem."},{"key":"ref12\/cit12g","doi-asserted-by":"crossref","first-page":"5275","DOI":"10.1021\/ol0620141","volume":"8","author":"Azizi N.","year":"2006","journal-title":"Org. Lett."},{"key":"ref12\/cit12h","first-page":"1239","author":"Azizi N.","year":"2007","journal-title":"Synlett"},{"key":"ref12\/cit12i","doi-asserted-by":"crossref","first-page":"2797","DOI":"10.1055\/s-2007-991085","author":"Azizi N.","year":"2007","journal-title":"Synlett"},{"key":"ref12\/cit12j","doi-asserted-by":"crossref","first-page":"519","DOI":"10.1002\/ejoc.200700842","author":"Ranu B. C.","year":"2008","journal-title":"Eur. J. Org."},{"key":"ref12\/cit12k","doi-asserted-by":"crossref","first-page":"1005","DOI":"10.1016\/j.tet.2008.11.084","volume":"65","author":"Xia S.","year":"2009","journal-title":"Tetrahedron"},{"key":"ref12\/cit12l","first-page":"648","author":"Han F.","year":"2009","journal-title":"Synlett"},{"key":"ref13\/cit13","doi-asserted-by":"crossref","first-page":"1533","DOI":"10.1016\/j.tetlet.2008.12.107","volume":"50","author":"Alizadeh A.","year":"2009","journal-title":"Tetrahedron Lett."},{"unstructured":"1,2-Diaza-1,3-dienes1a\u2212fwere synthesized from the corresponding chlorohydrazones by treatment with base (seeSupporting Information).","key":"ref14\/cit14"},{"unstructured":"For example, the hydrazinoalkylidene rhodanine4ahas been elucidated as follows: (a) its IR spectrum exhibited strong absorption bands at 1707, 1658 (C\u2550O), and 1191 cm\u22121(C\u2550S); (b) the1H NMR spectrum of4ain CDCl3showed two singlets attributed to the hydrazino (\u03b4 = 10.33 and 6.52 ppm) protons; (c) its13C NMR showed characteristic signals at \u03b4 = 191.2 (C\u2550S), 166.7, 157.2 (C\u2550O), 154.7, and 92.8 (C\u2550C). (d) The mass spectrum of4adisplayed a molecular ion peak atm\/z= 379 [M+].","key":"ref15\/cit15"},{"unstructured":"For a solid-phase synthesis of rhodanines by a different strategy, see:","key":"ref16\/cit16"},{"key":"ref16\/cit16a","doi-asserted-by":"crossref","first-page":"5729","DOI":"10.1016\/S0040-4039(00)00866-2","volume":"41","author":"Lee C. L.","year":"2000","journal-title":"Tetrahedron Lett."},{"key":"ref17\/cit17","doi-asserted-by":"crossref","first-page":"5855","DOI":"10.1016\/S0040-4020(01)00523-3","volume":"57","author":"Attanasi O. A.","year":"2001","journal-title":"Tetrahedron"},{"unstructured":"For the modified procedure, seeSupporting Information.","key":"ref17\/cit17a"}],"container-title":["Organic Letters"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/ol900545v","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,3,16]],"date-time":"2023-03-16T04:14:58Z","timestamp":1678940098000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/doi\/10.1021\/ol900545v"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,4,27]]},"references-count":62,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2009,6,4]]}},"alternative-id":["10.1021\/ol900545v"],"URL":"https:\/\/doi.org\/10.1021\/ol900545v","relation":{},"ISSN":["1523-7060","1523-7052"],"issn-type":[{"type":"print","value":"1523-7060"},{"type":"electronic","value":"1523-7052"}],"subject":[],"published":{"date-parts":[[2009,4,27]]}}}