Selectfluor promoted environmental-friendly synthesis of 2H-chromen-2-ones derivatives under various reaction conditions

Bakers Yeast Catalyzed and Ultrasound Accelerated Synthesis of 2-Amino-2-Chromenes

“…γ-Alumina [29], methanesulfonic acid [30], nanostructured diphosphate [31], sodium hydroxide [32], triton B [33], sodium salt of ethylenediamine tetraacetic acid [34], magnessium oxide [35] and titanium tetrachloride [36], have also been used. There are also reports on the use of catalysts such as DBU [37], selectfluor [38], piperazine [39]. potassium phthalimide-N-oxyl [40], gel entrapped DABCO [41] and Poly 4-vinylpyridine has also been used as a catalyst [42] for the synthesis of the chromene derivatives.…”

“…Several applications in organic synthesis have made sonochemistry an attractive technique [48] and hence increasingly used in organic synthesis [49]. It has proved to be a great tool for improving yields and decreasing the reaction time [50] Considering all the above facts here in the present work objective was set to develop an efficient, cost effective and sustainable route for one pot three component cyclocondensations of aryl aldehydes, malononitrile and 1-naphthol in non-aqueous media (organic solvents) under relatively mild reaction conditions using an easily available, cheaper whole cell biocatalyst, active dry baker's yeast instead of the catalysts reported in the literature [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. The objective was also set in mind to use non-conventional energy source, ultrasonication for assisting the cyclocondensation.…”

Recent Advances in the Application of SelectfluorTMF-TEDA-BF4 as a Versatile Mediator or Catalyst in Organic Synthesis

“…One-pot condensation of β-ketoesters 76 and substituted phenols 75 catalyzed by 1 resulted in the efficient formation of 2H-chromen-2-one derivatives 77 [ 51 ]. Reactions were performed under solvent-free conditions and application of ultrasonic irradiation improved the yields and reduced the reaction times [ 52 ].…”

Microwave-assisted green synthesis of 1,1-diacetates (acylals) using selectfluor™ as an environmental-friendly catalyst under solvent-free conditions

“…In this context, reported including Bromination [26], Iodination [27], Oxidation of alcohols [28], Synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes [29], a-thiocyanation of ketones [30], Synthesis of 9-aryl-1,8-dioxooctahydro xanthenes [31], and synthesis of 2h-chromen-2-ones [32] be can noted.…”