A one-step, multi-component reaction for the synthesis of fully substituted 5-amino-4-carboxamidthiazoles
摘要:
A novel multi-component reaction has been developed for the synthesis of fully substituted 5-amino-4-carboxamidthiazoles. Condensation of an aldehyde with commercially available 2-amino-2-cyanoacetamide in the presence of elemental sulfur and base affords these heterocycles in a one-pot reaction sequence. A variety of aryl, heteroaryl, and aliphatic aldehydes were successfully utilized, thus providing rapid access to functionalized thiazoles that are valuable intermediates in the synthesis of pharmacologically active compounds. (C) 2013 Elsevier Ltd. All rights reserved.