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Part-IIImpact of Microwave…NO 2NO 2H 3 COPEGOH 3 COPEGOHOFRNH 2MWI, 450 W,1 minONRZn, NH 4 ClMWI, 450W,2 minH 3 COPEGOON NHR 1NRR 1 NCS, DCCMWI, 450W,4 minH 3 COPEGOONH 2NHRLiBrMWI, 450W,4 minN NHR 1H 3 COO32R= 4-OCH 3 PhCH 2 , 4-FPhCH 2 , Cyclopentyl etcR 1 = Ph, 4-FPh, 3-CH 3 Ph, 3-FPh, 4-FPh etcNRMicrowave mediated intra molecular carbanilide cyclizations to condensedimidazolinediones 33 (17 compounds) have been reported 36 with significantly reducedreaction time (microwave minutes vs heating hours) for both solution and solid phasereactions. Catalytic barium hydroxide [Ba(OH) 2 ] in DMF was uniquely effective in thismicrowave mediated transformation and, in certain systems, can provide access tounepimerized products not available in thermal transformations.NCat. Ba(OH) 2NONHCOOR 2DMF, MWI1-7.5 minONOR 3R 2 = alkyl or polymerR 333R 3 = PhLin and Sun 37 have explored a combination of microwave techniques and tracelesspolymer-supported strategies for the synthesis of tricyclic quinoxalinone imidazoles (13compounds) 34 with three points of diversity. Simultaneous reduction of the two nitrogroups led to the intramolecular cyclizative cleavage of polymer support and N-heterocyclization with aldehydes to the formation of imidazole ring in one pot. The289

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