caa a22 4500 44587824X CHVBK 20180317145534.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s11030-010-9247-4 doi (NATIONALLICENCE)springer-10.1007/s11030-010-9247-4 Green chemistry approaches to the regioselective synthesis of spiro heterobicyclic rings using iodine as a new and efficient catalyst under solvent-free conditions [Elektronische Daten] [Dipak Prajapati, Debajyoti Bhuyan, Mukut Gohain, Wenhao Hu] Iodine catalyzes the pseudo four-component reaction of an aldehyde, a urea or thiourea, and cyclic 1,3-dicarbonyl compounds under microwave irradiation in a solvent-free condition to yield various σ symmetric spiro heterobicyclic rings in excellent yields. Graphical Abstract: Springer Science+Business Media B.V., 2010 Biginelli-like reaction nationallicence Barbituric acid nationallicence Spiro fused heterocycles nationallicence 1, 3-dicarbonyl compounds nationallicence Iodine nationallicence MCR nationallicence Multicomponent nationallicence Microwave synthesis nationallicence Prajapati Dipak Medicinal Chemistry Division, North East Institute of Science and Technology, 785 006, Jorhat, Assam, India aut Bhuyan Debajyoti Medicinal Chemistry Division, North East Institute of Science and Technology, 785 006, Jorhat, Assam, India aut Gohain Mukut Medicinal Chemistry Division, North East Institute of Science and Technology, 785 006, Jorhat, Assam, India aut Hu Wenhao Department of Chemistry, East China Normal University, 200062, Shanghai, People's Republic of China aut Molecular Diversity Springer Netherlands 15/1(2011-02-01), 257-261 1381-1991 15:1<257 2011 15 11030 https://doi.org/10.1007/s11030-010-9247-4 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11030-010-9247-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prajapati Dipak Medicinal Chemistry Division, North East Institute of Science and Technology, 785 006, Jorhat, Assam, India aut NATIONALLICENCE 700 1- Bhuyan Debajyoti Medicinal Chemistry Division, North East Institute of Science and Technology, 785 006, Jorhat, Assam, India aut NATIONALLICENCE 700 1- Gohain Mukut Medicinal Chemistry Division, North East Institute of Science and Technology, 785 006, Jorhat, Assam, India aut NATIONALLICENCE 700 1- Hu Wenhao Department of Chemistry, East China Normal University, 200062, Shanghai, People's Republic of China aut NATIONALLICENCE 773 0- Molecular Diversity Springer Netherlands 15/1(2011-02-01), 257-261 1381-1991 15:1<257 2011 15 11030 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer