Title Microwave-Assisted Michael Addition of Some Pyrimidine and Purine Nucleobases with α,β-Unsaturated Esters: A Rapid Entry into Carboacyclic Nucleside Synthesis Type Article Keywords Carboacyclic nucleside; Microwave; Michael addition; Nucleobases; α,β-Unsaturated esters Abstract An efficient procedure for the synthesis of some carboacyclic nucleosides via microwave-assisted Michael addition of various nucleobases to α,β-unsaturated esters in the presence of tetrabutylammonium bromide and DABCO is described. Researchers A. Khalafi-Nezhad (First researcher) , Abdolkarim Zare (Second researcher) , M. N. Soltani Rad (Third researcher) , B. Mokhtari (Fourth researcher) , A. Parhami (Fifth researcher)