New efficient synthesis of 1H-pyrimido[2,1-b]quinazoline-2,6-diones via a tandem aza-Wittig/nucleophilic addition/intramolecular cyclization/isomerization reaction starting from the Baylis-Hillman adducts

New efficient synthesis of 1H-pyrimido[2,1-b]quinazoline-2,6-diones via a tandem aza-Wittig/nucleophilic addition/intramolecular cyclization/isomerization reaction starting from the Baylis-Hillman adducts

Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tetrahedron - Volume 71, Issue 3, 21 January 2015, Pages 419-423

Ding Yuan, Han-Han Kong, Ming-Wu Ding,