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Theoretical confirmation of the reaction mechanism leading to regioselective formation of thiazolidin-4-one from bromoacetic acid derivatives

Ladislav Janovec, Stanislav Böhm, Ivan Danihel, Ján Imrich, Pavol Kristian, Karel D. Klika

. 2007 ; 72 (10) : 1435-1445.

Jazyk angličtina Země Česko

Perzistentní odkaz   https://www.medvik.cz/link/bmc07501822
E-zdroje Online

NLK ProQuest Central od 2005-01-01 do 2011

A regioselective synthesis of 3-alkyl-2-[(anthracen-9-yl)imino]thiazolidin-4-ones 2a-2e and 2-(alkylimino)-3-(anthracen-9-yl)thiazolidin-4-ones 3a-3e from appropriate thioureas using methyl bromoacetate or bromoacetyl bromide, respectively, has been rationalized by DFT calculations of model thiourea and its phenyl derivative. The proposed mechanism indicates that the regioselective formation of the target thiazolidinones is a consequence of a different reactivity of the reagents and a varying stability of the intermediates, 1-alkyl-3-(anthracen-9-yl)-2-[(methoxycarbonyl)methyl]isothioureas 4a-4e and 1-alkyl-3-(anthracen-9-yl)-2-(bromoacetyl)isothioureas 6a-6e.

Bibliografie atd.

Lit.: 9

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