Highly substituted 1,4-dihydropyrano[2,3-c]pyrazole derivatives were synthesized by four-component reaction of aromatic aldehydes, malononitrile, ethyl acetoacetate and various phenylhydrazine, using nickel ferrite as a recyclable nanocatalyst by a grinding method under solvent-free and thermal conditions. The reaction has the advantages of good yields, less pollution, ease of separation of the...

Abstract On 6 December 2006, Australia and Korea announced a joint study on a possible Australia-Korea free trade agreement (AKFTA) to promote trade and economic relations between the two countries. The paper provides empirical evidence on the possible gains and their transmission mechanism from this agreement. Significantly, it uses a new economic policy modelling approach, the endogenous grav...