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135 protocols using resorcinol

1

Flame Retardant Polymer Synthesis

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Aniline, piperazine, resorcinol,
diphenyl chlorophosphate, dimethyl methyl phosphonate, methanol, and
1,3-phenylene diamine were purchased from Aldrich, Germany. Thionyl
chloride, triethylamine, chloroform, and tetrahydrofuran (THF) were
purchased from Samchun Chemical Company, Korea. Polycarbonate (PC),
ABS, and RDP of commercial grades were provided by Cheil Industries,
Korea. EVA which is a blend of EVA copolymer, LLDPE, and PE-g-MA (80:10:10) was provided by the LS-Cable Company, Korea.
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2

Synthesis and Characterization of Resorcinol-Formaldehyde Coated Cellulose

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All electrochemical experiments were carried out in degassed solutions by extensive N2 bubbling. Resorcinol (Aldrich, St. Louis, MO, USA, >99.0%) and formaldehyde (Cicarelli, ACS reagent, 37% with 10–15% methanol as stabilizer) were used as reactants without further purification. Sodium carbonate (decahydrate, Aldrich, >99.0%) and cetyl,trimethylammonium bromide (CTAB, Aldrich, >98%) were used as catalyst and stabilizer, respectively. All other chemicals used were of analytical grade, and solutions were prepared with Millipore water. The cellulosic woven fiber fabric is a raw canvas made of crude cotton. The canvas is washed with detergent to remove any additive of the weaving process and then washed with 1% NaOH solution (48 h with stirring) to remove any impurities. Cellophane film was acquired from a local paper retailer and washed with 1% NaOH overnight to remove any impurities.
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3

Synthesis of Terephthaloyl Biscaprolactam and EDA3

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ε-caprolactam used
in this study was obtained from Capro Corporation (Korea). All other
chemicals (sodium hydride, terephthaloyl chloride, triethylamine,
pyridine, resorcinol, p-phenylenediamine (PDA1), 4-nitrobenzoyl chloride,
and activated Pd-carbon (10%)) were purchased from Aldrich (see Scheme 2 for chemical structures).
We synthesized terephthaloyl biscaprolactam (TBC) by reacting terephthaloyl
chloride with caprolactam in benzene.20 (link) 3-(4-Aminobenzoyloxy) phenyl 4-aminobenzoate (EDA3) and sodium caprolactam
was synthesized by the same method as we reported.21 (link)
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4

Synthesis and Characterization of Novel Aromatic Compounds

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(S)-Perillyl alcohol, pyrocatechol, resorcinol, hydroquinone, pyrogallol, phloroglucinol and the others chemicals used were of reagent grade and were obtained from Aldrich (St. Louis, MO, USA). The reaction progress was monitored by thin layer chromatography on silica gel 60 F-254 (Merck, Darmstadt, Germany), and components were visualized by a VL-4LC UV lamp (Vilber Lournat, Collégien, France). Purification by flash chromatography was performed on silica gel 60 (particle size 0.032–0.063 mm) also from Merck and recrystallization. Melting points were measured on a SMP3 apparatus (Stuart-Scientific, Staffordshire, UK). FT-IR spectra were recorded on Buck Scientific M500 instrument (Buck Scientific Instrument, East Norwalk, CT, USA). NMR spectra were recorded at room temperature in solution on a 400 MHz Avance instrument (Bruker, Rheinstetten, Germany). HRMS spectra were recorded on a MAT 95 XL mass spectrometer (Thermo Finnigan, Bremen, Germany).
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5

Characterization of Cocrystal Phases

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Reagents and solvents were obtained from Sigma-Aldrich (glutaric
acid, isophthalic acid, trimesic acid, hydroquinone, benzoquinone,
4-aminobenzoic acid, oxalic acid, 1-naphthol, terephthaldehyde, saccharin,
nicotinamide, resorcinol, and 2,6-pyridinecarboxylic acid) and TCI
(benzoic acid, trans-1,2-bis-(4-pyridyl)ethylene, 4,4′-bipyridine,
1,2-bis-(4-pyridyl)ethane, 4,4′-biphenol, tetramethylpyrazine,
naproxen, carbamazepine, aspirin, and 2,7-dihydroxynaphthalene) and
used as received. X-ray powder diffraction (PXRD) was used for phase
identification of coformers and cocrystals. We note that peak positions
in experimental PXRD patterns can exhibit slight shifting compared
to calculated PXRD patterns obtained from SCXRD data because of thermal
expansion if data were collected at different temperatures.
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6

Synthesis of Silicon-Carbon Composite

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Typically, 0.3 g purified silicon, 0.1 g CTAB (hexadecyl trimethyl ammonium bromide, Aldrich), 0.1 g resorcinol (Aldrich), and 1 mL ammonium hydroxide (25% NH3·H2O aqueous solution) were dispersed into a 500 mL solution (100 mL ethanol and 400 mL deionized water) and treated by ultrasonic dispersion for 1 h.16 (link) After stirring for 15 min, 0.4 mL formaldehyde (38% aqueous solution) was added to the suspension, followed by stirring for 20 h. The as-obtained Si@RF intermediate was collected via extraction filtration and washed with ethanol and deionized water. After carbonization at 900 °C for 3 h under the N2 atmosphere, the product was denoted as Si@C.
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7

Synthesis and Characterization of Coumarins

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Coumarins syntheses were carried out in air. Organic solvents were purchased as RA grade and used without further purification. Resorcinol, 2,4-dihydroxybenzaldehyde, pyrrolidine, piperidine and diethylamine were purchased from Aldrich and used as received. The synthesis of 6,7-dihydroxy-4-methylcoumarin and 1,2,4-benzenetriol was prepared according to already published procedure which is available in the literature. Thin layer chromatography was carried out in Merck GF254 0.2 mm of thickness TLC plates. Melting points were obtained from a Fisher–Johns apparatus and are uncorrected. NMR experiments were carried out in solution using methanol-d4 and DMSO-d6 as solvents. 1H and 13C NMR experiments were recorded in an Agilent Technologies DD2 500 MHz spectrometer. Chemical shifts are reported in ppm, multiplicity by means of coupling constants is measured in hertz (Hz). DMEM-F12, penicillin–streptomycin, and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), were obtained from Sigma-Aldrich (St. Louis, MO, USA). Sodium bicarbonate and dimethylsulfoxide (DMSO) were obtained from Sigma Chem (St. Louis, MO, USA). Fetal bovine serum (FBS) was obtained from Biowest (Nuaillé, France).
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8

Simultaneous Detection of Diverse Compounds

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The neurotransmitters and metabolites tested were acetamidophenol, catechol, L-DOPA, dopamine, vanillylamine, homovanillic acid, norepinephrine, resorcinol, vanillic acid (all from Aldrich Chemical, Milwaukee, WI, USA), and uric acid (Fisher Scientific). The working solution was prepared in universal buffer with a concentration of 1.12–2.04 ppm (approximately 1 × 10−5 M) for each of the 10 compounds listed above.
The second class of analytes was nucleic acids and heterocyclic bases including adenine, adenosine, cytidine, cytosine, guanine, guanosine, thymidine, and uridine (all from Aldrich Chemical, Milwaukee, WI, USA). The working solution was prepared in universal buffer with a concentration of 56–204 ppm (approximately 5.00 × 10−4 M) for each of the eight analytes in this group.
The capsaicinoids used were capsaicin, dihyrocapsaicin, and N-vanillylnonanamide (VANA) (all from Sigma Chemical, St. Louis, MO, USA). The working solution was prepared in acetonitrile with a concentration of 148–152 ppm (approximately 5.00 × 10−4 M) for each of the three analytes listed above.
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9

Polymer-Stabilized Cobalt Nanoparticles

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Styrene (Aldrich), polyvinylpyrrolidone (PVP, MW 40 000, Aldrich), cobalt(II) acetate tetrahydrate (Aldrich), benzyl alcohol (Aldrich), ammonia solution (25 %; Fluka), potassium persulfate (Eimer and Amend), resorcinol (Aldrich), formaldehyde (Aldrich), hexadecyltrimethylammonium bromide (CTAB; Aldrich), ethanol (98 %; Merck), were used as received. Deionised water was used in all experiments.
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10

Synthesis of Aromatic Polyamides and Esters

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ε-Caprolactam used in this study was
procured from Capro Corporation (Korea). Sodium hydride, terephthaloyl
chloride, triethylamine, pyridine, resorcinol, p-phenylenediamine
(PDA1), 4-nitrobenzoyl chloride, and activated Pd-carbon (10%) were
purchased from Aldrich. TBC was synthesized by the reaction of terephthaloyl
chloride with caprolactam in benzene.23 (link) 3-(4-Aminobenzoyloxy)phenyl 4-aminobenzoate (EDA3) was synthesized
according to the method reported previously (see Figure 5 for chemical structures of
TBS, PDA1, and EDA3).24 (link)
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