Reactions of urocanic acid (UCA) methyl esters with singlet oxygen and 4-methyl-1,2,4-triazoline-3,5-dione (MTAD)
作者:Roberto Roa、Kevin E. O'Shea
DOI:10.1016/j.tet.2006.07.108
日期:2006.11
Singletoxygen adds to the imidazole ring of cis- and trans-methyl urocanate (MUC) to yield the corresponding 2,5-endoperoxides, which are modestly stable at low temperature but decompose upon warming to form complex reaction mixtures. MTAD, a singletoxygen mimic, reacts with cis- and trans-MUC to yield stereospecific [4+2] reaction products involving the olefinic side chain and the C4–C5 double bond
[EN] CHIRAL IMIDAZOYL INTERMEDIATES FOR THE SYNTHESIS OF 2-(4-IMIDAZOYL)-CYCLOPROPYL DERIVATIVES<br/>[FR] INTERMEDIAIRES CHIRAUX D'IMIDAZOYL POUR LA SYNTHESE DE DERIVES 2-(4-IMIDAZOYL)-CYCLOPROPYLE
申请人:GLIATECH INC
公开号:WO2001081317A1
公开(公告)日:2001-11-01
Novel intermediates useful in the preparation of optically active H3 histamine receptor antagonist 2-(4-imidazoyl)-cyclopropyl derivatives are disclosed.