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The resulting dry crude product was loaded on a chromatography column and purified by eluting with hexanes/ethyl acetate (gradient 0percent to 15percent ethyl acetate). a href="http://visualfractions.com/calculator/long-division/what-is-90-divided-by-3-using-long-division/">What is 90 Divided by 3 Using Long Division?

90/3 simplified, Reduce 90/3 to its simplest form

To a solution of copper(I) chloride (26.0 g, 0.250 mmol) in water (7.5 mL) was added dropwise thionyl chloride (1.3 mL) under ice-cooling, then the reaction temperature was gradually elevated, and the mixture was stirred at room temperature overnight. (1-B) [0408] To a mixture of [59557-90-3]3,5-dimethyl-4-bromoaniline (500 mg, 2.499 mmol) in concentrated hydrochloric acid (2.5 mL) and water (0.5 mL) was added dropwise a solution of sodium nitrite (193 mg, 2.749 mmol) in water (1.3 mL) at -5C. After stirred at -5C for 30 minutes, to the mixture was added dropwise a solution prepared in (1-A) at the same temperature. The reaction temperature was gradually elevated, and the reaction mixture was stirred at room temperature overnight. The reaction mixture was extracted three times with chloroform, the organic layer was combined, dried, and concentrated under reduced pressure to give a crude product of 4-bromo-3,5-dimethylbenzenesulfonyl chloride (375 mg). The resultant was used in the next step without further purification

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reducing or simplifying the fraction (simplification) : 4/22 - dividing the numerator and denominator of a fraction by the same non-zero number - equivalent fraction

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With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; potassium carbonate; In water; N,N-dimethyl-formamide; at 90℃; for 1h; You can use our handy GCF calculator to work this out yourself if you want to. We already did that, and the GCF of 270 and 4 is 2.

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To make it a fraction form answer, you multiply the whole number by the denominator and make the result the new numerator. The old Rules for expressions with fractions: Fractions - use a forward slash to divide the numerator by the denominator, i.e., for five-hundredths, enter 5/100. If you use mixed numbers, leave a space between the whole and fraction parts. A mixture of [59557-90-3]4-bromo-3,5-dimethylaniline (1 g, 10 mmol), (3- (methoxycarbonyl) phenyl) boronic acid (2.7 g, 15 mmol), potassium carbonate (4.14 g, 30 mmol) , Bis (diphenylphosphino) ferrocene] dichloropalladium dichloromethane complex (0.37 g, 0.5 mmol) was dissolved in N, N-dimethylformamide (30 mL) and water 10 mL), and the reaction was stirred at 90 C for 1 hour.The reaction mixture was cooled to room temperature, diluted with water (30 mL) and extracted with ethyl acetate (200 mL × 2). The combined organic layers were washed with saturated sodium chloride solution (50 mL), dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure filtrate.The residue was purified by silica gel column chromatography (petroleum ether: ethyl acetate = 4: 1) to give the title compound (2.1 g, yield 82%) as a pale yellow solid. To a mixture of cyclopentanone (42 mg, 0.500 mmol) and [59557-90-3]4-bromo-3,5-dimethylaniline (100 mg, 0.500 mmol) in acetic acid (0.5 mL), trimethylsilyl cyanide (0.063 ml, 0.500 mmol) was added at room temperature. The mixture was stirred at room temperature for 1.5 hours under nitrogen atmosphere. The reaction mixture was quenched with 28% aqueous ammonia (1 mL), diluted with water and extracted with dichloromethane. The organic layer was washed with water and brine, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure to afford 1-((4-bromo-3,5-dimethylphenyl)amino)cyclopentanecarbonitrile as a crude product (152 mg). 1H-NMR (400MHz, CDCl3) delta: 1.83-1.92 (4H, m), 2.07-2.15 (2H, m), 2.33-2.42 (2H, m), 2.37 (6H, m), 3.71 (1H, brs), 6.56 (2H, s)The full range includes a variety of different hosetail designs, hosetail adaptors, and also hosetail fittings to ensure a match for every job. Various hosetail fittings can be used for a range of different media including water, oil, and air. Our hose tail connectors are available in different layouts such as Cross, Y Hose, Swivel Nut, and other configurations. We can now divide both the new numerator and the denominator by 2 to simplify this fraction down to its lowest terms.