[1] H.P. Avila, E.F.A. Smania, F.D. Monache, A. Smania, Structure-activity relationship of antibacterial chalcones, Bioorg. Med. Chem. 16(2008) 9790-9794. [2] M. Cabrera, M. Simoens, G. Falchi, M.L. Lavaggi, O.E. Piro, E.E. Castellano, A. Vidal, A. Azqueta, A. Monge, A.L. deCerain, G. Sagrera, G. Seoane, H. Cerecetto, M. Gonz_alez, Synthetic chalcones, flavanones, and flavones as antitumoral agents: biological evaluation and structure-activity relationships, Bioorg. Med. Chem. 15(2007) 3356-3367. [3] L.D. Chiaradia, R. dos Santos, C.E. Victor, A.A. Vieira, P.C. Leal, R.J. Nunes, J.B. Calixto, R.A. Yunes, Synthesis and pharmacological activity of chalcones derived from 2, 4, 6-trimethoxyacetophenone in RAW 264.7 cells stimulated by LPS: quantitative structure-activity relationships, Bioorg. Med. Chem. 16(2008) 658-667. [4] A.W. Star, T.J. Marby, Flavonoid frond exudates from two Jamaican ferns, pityrogramma tartarea and P. calomelanos, Phytochemistry 10(1971) 2817-2818. [5] K. Satyanarayana, M.N.A. Rao, Synthesis of 3-[4-[2,3-dihydro-2-(substituted aryl)-1, 5-benzothiazepin-4-yl] pheyl] sydnones as potential antiinflammatory agents, Indian J. Pharm. Sci. 55(1993) 230. [6] D.M. Song, K.H. Jung, J.H. Moon, D.M. Shin, Photochemistry of chalcone and the application of chalcone-derivatives in photo-alignment layer of liquid crystal display, Opt. Mater 21(2003) 667-671. [7] S.R. Prabhu, A. Jayarama, K. Chandrasekharan, V. Upadhyaya, S.W. Ng, Synthesis, growth, structural characterization, hirshfeld analysis and nonlinear optical studies of a methyl substituted chalcone, J. Mol. Struct. 1136(2017) 244-252. [8] A.M. Asiri, S.A. Khan, Synthesis, characterization and optical properties of mono- and bis-chalcone, Mater. Lett. 65(2011) 1749-1752. [9] R.N. Singh, P. Rawat, V. Baboo, Y. Kumar, Spectroscopic and quantum chemical correlation for structural evaluation, chemical reactivity and non-linear optical property investigation of two chalcone having pyrrole moiety: a comparative study, J. Mol. Struct. 1085(2015) 258-267. [10] A.K. Singh, G. Saxena, R. Prasad, A. Kumar, Synthesis, characterization and calculated non-linear optical properties of two new chalcones, J. Mol. Struct. 1017(2012) 26-31. [11] C.G. Niu, A.L. Guan, G.M. Zeng, Y.G. Liu, Z.W. Li, Fluorescence water sensor based on covalent immobilization of chalcone derivative, Anal. Chim. Acta 577(2006) 264-270. [12] A. Mitsutani, Future possibilities of recently commercialized acid/basecatalyzed chemical processes, Catal. Today 73(2002) 57-63. [13] G. Cave, C. Raston, Toward benign syntheses of pyridines involving sequential solvent free aldol and Michael addition reactions, Chem. Commun. 22(2000) 2199-2200. [14] N. Calloway, L. Green, Reactions in the presence of metallic halides. I. bunsaturated ketone formation as a side reaction in Friedel-Crafts acylations, J. Am. Chem. Soc. 59(1937) 809-811. [15] E.L. Gall, F. Texier-Boullet, J. Hamelien, Simple access to α, β-unsaturated ketones by acid-catalyzed solvent-free reactions, Synth. Commun. 29(1999) 3651-3657. [16] G. Sipos, F. Sirokman, Chalcon formation of different substituted acetophenones and p-hydroxy-benzaldehyde, Nature 202(1964) 489. [17] T. Narender, K.P. Reddy, A simple and highly efficient method for the synthesis of chalcones by using borontrifluoride-etherate, Tetrahedron Lett. 48(2007) 3177-3180. [18] S. Sebti, A. Solhy, R. Tahir, S. Boulaajaj, J.A. Mayoral, J.M. Fraile, A. Kossirc, H. Oumimounc, Calcined sodium nitrate/natural phosphate: an extremely active catalyst for the easy synthesis of chalcones in heterogeneous media, Tetrahedron Lett. 42(2001) 7953-7955. [19] N. Iranpoor, F. Kazemi, RuCl3 catalyses aldol condensations of aldehydes and ketones, Tetrahedron 54(1988) 9475-9480. [20] N. Yao, A. Song, X.B. Wang, S. Dixon, K.S. Lam, Synthesis of flavonoid analogues as scaffolds for natural product-based combinatorial libraries, J. Comb. Chem. 9(2007) 668-676. [21] S. Dang, J.G. Liu, G.H. Wang, Synthesis of 2’-hydroxychalcone at room temperature, Chin. J. Synth. Chem. 16(2008) 460-463. [22] M.S. Kwon, N. Kim, S.H. Seo, I.S. Park, R.K. Cheedrala, J. Park, Recyclable palladium catalyst for highly selective a-alkylation of ketones with alcohols, Angew. Chem. Int. Ed. 44(2005) 6913-6915. [23] G. Wang, Z.X. Li, C.S. Li, S.J. Zhang, In-situ generated ionic liquid catalyzed aldol condensation of trioxane with ester in mild homogeneous system, Green Energ. Environ. 4(2019) 293-299. [24] G. Wang, Y.M. Xu, Z.X. Li, C.S. Li, S.J. Zhang, An ionic liquid-catalyzed probase method for one-pot synthesis of α, β-unsaturated esters from esters and aldehydes under mild conditions, Green Chem. 19(2017) 4838-4848. [25] R. Mestres, A green look at the aldol reaction, Green Chem. 6(2004) 583-603. [26] G. Wang, C. Sararuk, C.S. Li, Z.X. Li, H. Wang, S.J. Zhang, Studies on mild catalytic synthesis of methyl acrylate via one-step aldol reaction, AIChE J. 68(2018) 1359-1372. [27] G. Wang, H. Wang, C.S. Li, Z.X. Li, S.J. Zhang, One-step and in-situ catalytic synthesis of acrylates from acetates (or propionates) and trioxane at room temperature, J. Ind. Eng. Chem. 55(2017) 173-182. [28] G. Wang, Z.X. Li, C.S. Li, H. Wang, Kinetic and thermodynamic studies on onestep synthesis of methyl acrylate promoted by generated ionic liquid at mild temperature, Chem. Eng. J. 319(2017) 297-306. [29] L.L. Dong, L. He, G.H. Tao, C.W. Hu, High yield of ethyl valerate from the esterification of renewable valeric acid catalyzed by amino acid ionic liquids, RSC Adv. 3(2013) 4806-4813. [30] W. Thamos, Room-temperature ionic liquids. Solvents for synthesis and catalysis, Chem. Rev. 99(1999) 2071-2084. [31] J.H. Davi, Task-specific ionic liquids, Chem. Lett. 33(2004) 1072-1077. [32] X.X. Zhang, W. Zhang, D. Tian, Z.H. Zhou, C.H. Lu, A new application of ionic liquids for heterogeneously catalyzed acetylation of cellulose under solventfree conditions, RSC Adv. 21(2013) 7722-7725. [33] H.F. Liu, F.X. Zeng, L. Deng, B. Liao, H. Pang, Q.X. Guo, Brønsted acidic ionic liquids catalyze the high-yield production of diphenolic acid/esters from renewable levulinic acid, Green Chem. 15(2013) 81-84. [34] Z.Q. Zhou, H.R. Huo, Q. Ma, J. Ran, L.M. Wu, [BPy-]HSO4 catalyzed one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones, J. South-Cent. Univ. Natl. (Nat. Sci. Ed.) 30(2011) 9-12. [35] C.R. Brindaban, B. Subhash, Ionic liquid as catalyst and reaction medium. The dramatic influence of a task-specific ionic liquid, [Bmim]OH, in Michael addition of active methylene compounds to conjugated ketones, carboxylic esters, and nitriles, Org. Lett. 7(2005) 3049-3052. [36] Y.Y. Song, H.W. Jing, B. Li, D.S. Bai, Crown ether complex cation ionic liquids: preparation and applications in organic reactions, Chem. Eur. J. 17(2011) 8731-8738. [37] B. List, L. Hoang, H.J. Martin, New mechanistic studies on the proline-catalyzed aldol reaction, PNAS 101(2004) 5839-5842. [38] B.M. Trost, C.S. Brindle, The direct catalytic asymmetric aldol reaction, Chem. Soc. Rev. 39(2010) 1600-1632. [39] B. Schetter, R. Mahrwald, Modern aldol methods for the total synthesis of polyketides, Angew. Chem. Int. Ed. 45(2006) 7506-7525. |