Microwave assisted DIC-promoted intramolecular cyclization for solid phase synthesis of trisubstituted imidazolidinones and pyrimidinones
作者:Xiaobing Wang、Seth Dixon、Nianhuan Yao、Mark J. Kurth、Kit S. Lam
DOI:10.1016/j.tetlet.2005.06.041
日期:2005.8
A convenient solid phase synthesis of trisubstituted imidazolidinones and pyrimidinones via microwave assisted DIC-promoted intramolecular cyclization is described. Intramolecular cyclization of a resin-bound thiourea prepared by acylation of a dipeptide with an aryl isothiocyanate was rapidly promoted with DIC under microwave to afford imidazolidinones and tetrahydropyrimidinones in good yield and