Novel Carbon—Carbon Bond Formation Between N‐Methyl‐3‐phenyl‐3‐hydroxypropylamine and Cresols Catalyzed by p‐Toluenesulfonic Acid.

Abstract

Acid. -The TosOH-catalyzed condensation of amino alcohol (I) with cresols affords the C-arylated products (III) instead of the expected phenol ethers (yields not given). -(GOPALAKRISHNAN*, M.; SURESHKUMAR, P.; KANAGARAJAN, V.; THANUSU, J.; GOVINDAN, S.; GHANTA, M. R.; Synth.

Synthesis, spectral studies and insect antifeedant activities of some 4-substituted 1-naphthacyl bromide and its esters

“…Many solvent-assisted brominating methods for the bromination of alkyl and aryl compounds by direct use of bromine solution in alkaline or acid medium have been reported in the literature [3,[41][42][43]. In the present work, the author has attempted to brominate naphthyl keto compounds with an alternative reagent like Winkler's solution (bromate-bromide solution) in the presence of aqueous phase catalyst fly-ash.…”

“…In the present work, the author has attempted to brominate naphthyl keto compounds with an alternative reagent like Winkler's solution (bromate-bromide solution) in the presence of aqueous phase catalyst fly-ash. The bromate-bromide solution was harmless to the reaction [3,[41][42][43] as well as the environment. Various 1-naphthyl ketones containing electron withdrawing and electron donating groups in position 4 have been subjected to bromination at acyl methyl group with Winkler's solution in the presence of fly-ash catalyst under water medium (Scheme 1).…”

“…The reaction got completed within 24 h and more than 60% yields of 4-substituted 1-naphthacyl benzoates (10-18) were obtained. Fly ash is a waste air-pollutant and it has many chemical components [3,[41][42][43] such as SiO 2 , Fe 2 O 3 , Al 2 O 3 , CaO, MgO and insoluble residues. During the course of the reaction these species exhibit their catalytic effects in the bromination in aryl methyl group and nucleophilic substitution at acyl carbon of acyl bromides in the side chain.…”

One-pot synthesis and in vitro microbiological evaluation of pyrimidinyl thiazolidinones catalyzed by activated fly ash in dry media

“…Many researchers studied the potential activity of fly ash and the hydration process of fly-ash cement [3]. Recently microwave-assisted activated fly-ash catalyzed Knoevenagel condensation, synthesis of amides, Schiff bases formation, Biginelli and Hantzsch reactions have been reported [4]. In addition, activated fly ash is used for the "one-pot" synthesis of 1,2,4,5-tetrazines [5] and 1,2,3-selenadiazoles [6].…”

Environmentally safe one-pot solvent-free synthesis of 6-aryl-1,2,4,5-tetrazinane-3-thiones(ones) catalyzed by NaHSO4-SiO2

“…Owing to the necessity of the "environmentally safe technological revolution" [8] a considerable attention is given to the procedure of microwave irradiation for ensuring fast synthesis of versatile organic compounds because of selective absorption of the microwave energy by polar molecules. The use of heterogeneous catalysts, in particular, NaHSO 4 on SiO 2 carrier [9], became a milestone in various fields of chemistry due to environmental safety combined with good yields and selectivity.…”