“…Although some researchers have reported this reaction with the use of no catalyst (Vieira et al, 2011;Figueroa-Villar and Vieira. 2013;Vieira et al, 2015), irradiation of visible light (Kumari et al, 2021), the following catalysts are used and introduced in this regard: [DABCO](SO 3 H) 2 Cl 2 (Shirini et al, 2015), [DABCO] (SO 3 H) 2 (HSO 4 ) 2 (Seyyedi et al, 2016), p-nanoporous MMT-HClO 4 (Mashhadinezhad et al, 2018), dodecylbenzenesulfonic acid (DBSA) (Hosseini et al, 2016), FeCl 3 .6H 2 O (Kefayati et al, 2014), ethylammonium nitrate (Hu et al, 2004), silico-tungstic acid (Li and Sun, 2009), amino-sulfonic acid (Li et al, 2006), NaOH/fly ash (Gadekar and Lande, 2012), sodium p-toluene sulfonate (NaPTSA) (Kamble et al, 2010), CoFe 2 O 4 -NPs (Rajput and Karur, 2013), non-catalyst/infrared irradiation (Alarreca et al, 2000), BF 3 / nano γ-Al 2 O 3 (Mirjalili et al, 2015), succinimidinium N-sulfonic acid hydrogen sulfate ([SuSA-H]HSO 4 ) (Abedini et al, 2016), basic alumina (KhalafInezhad and Hashemi, 2001), Verjuice (Safari et al, 2019), sulfonic acid functionalized nanoporous silica (SBA-Pr-SO 3 H) (Shirini et al, 2015), copper oxide nanoparticles (CuO-NPs) (Dighore et al, 2014), aminosulfonic acid (NH 2 SO 3 H) (Li et al, 2006), 2amino-3-(4-hydroxyphenyl) propanoic acid (L-tyrosine) (Thirupathi et al, 2013), CoFe 2 O 4 nanoparticles (Rajput and Kaur, 2013), sodium acetate (CH 3 COONa) (Uttam, 2016), 1-nbutyl-3-methylimmidazolium tetrafluoroborate ([bmim]BF 4 ) (Wang et al, 2005), polyvinyl pyrrolidone stabilized nickel nanoparticles (PVP-Ni-NPs) (Khurana and Vij, 2010), cetyltrimethyl ammonium bromide (CTMAB) (Ren et al, 2002), ethyl ammonium nitrate (EAN)…”