목차
1. Results
2. Discussion
본문내용
Results: Summarize the experimental results obtained.
The amount of the Knoevenagel condensation product is 37.8702g(product)-36.1195g(filter paper and watch glass)=1.750g. The amount of DASA dye is 36.4414g(product)-36.1192g(filter paper and watch glass)=0.322g. In step 1, the number of moles of 2-furaldehye used in the reaction is 1.0mmol.
출처 : 해피캠퍼스
목차
1. Objectives
2. Principles & Methods
3. Table of relevant chemical properties
본문내용
Objectives: Give a short description of the goals of this experiment.
The biaryl product is synthesized using Pd catalyst under basic conditions with substrates of aryl bromide and arylboronic acid, by Suzuki-Miyaura cross-coupling. The impurities are removed by crystallization and vacuum filtration, moisture is removed by MgSO4 column, and solvent is removed by rotavap. The yield is calculated, and purity and structure are analyzed through m.p. measurement and C-NMR, H-NMR, and IR measurement.
출처 : 해피캠퍼스
목차
1. Results
2. Discussion
본문내용
Results: Summarize the experimental results obtained.
The amount of the bromobenzene is 37.7588g(product)-36.1605g(filter paper and watch glass)=1.5903g. The number of moles of benzophenone used in the reaction is 3.0006g/182.222g/mol=0.0165mol. Since benzophenone and triphenylmethanol is 1:1 molar ratio, the number of moles of the theolretical yield of the product is 0.0165mol. The fractional yield of triphenylmethanol is {(1.5903g/260.33g/mol)/0.0165mol}x100=37.0%. The melting range of product is 152~162°C. The color of product is white.
출처 : 해피캠퍼스
목차
1. Objectives
2. Principles & Methods
3. Table of relevant chemical properties
본문내용
Objectives: Give a short description of the goals of this experime
In anhydrous diethyl ether solvent, phenylmagnesium bromide, a grignard reagent, is synthesized as a reaction between bromobenzene and Mg. Triphenylcarbinol is synthesized by the grignard reaction of grignard reagent and benzophenone, and it is separated by extraction, brine wash, moisture absorption of anhydrous sodium sulfate, solvent removal with evaporation, side product removal with hexane wash, and suction filtration. Calculate the m.p. and fractional yield.
출처 : 해피캠퍼스
목차
1. Results
2. Discussion
본문내용
Results: Summarize the experimental results obtained.
The amount of the stilbene is 74.0424g(product)-73.983g(filter paper and watch glass)=0.0594g. The numberof moles of styrene used in the reaction is (2.0mlx0.909glml)/104.14g/mol=1.74×10-3mol. Since styrene and stilbene is 2:1 molar ratio, the number of moles of the theolretical yield of the product is 8.73×10-4mol.
출처 : 해피캠퍼스
목차
1. Objectives
2. Principles & Methods
3. Table of relevant chemical properties
본문내용
Objectives: Give a short description of the goals of this experiment.
Two styrenes are synthesized into trans-stilbene through Alkene metathesis using Grubbs’ 2nd generation catalyst. Remove the solvent with an evaporator and purify cis-stilbene with pasteur pipette column chromatography. The tlc results are analyzed, and the solvent is removed to calculate the yield and the fractional yield.
출처 : 해피캠퍼스
목차
1. Results
2. Discussion
본문내용
Results: Summarize the experimental results obtained.
The amount of the trans-stilbene is 36.972g(product)-36,163g(filter paper and watch glass)=0.809g. The amount of cis-stilbene is 36.932g(product)-36.5296(r.b.f. taring)=0.4044g. The numberof moles of benzaldehyde used in the reaction is (2.0mlx1.044g/mol)/106.124g/mol=0.02mol.
출처 : 해피캠퍼스
목차
1. Objectives
2. Principles & Methods
3. Table of relevant chemical properties
본문내용
Objectives: Give a short description of the goals of this experiment.
In this experiment, benzyltriphenylphosphonium chloride reacts with NaOH and is converted into phosphonium ylide, which attacks benzaldehyde to synthesize trans-stilbene and cis-stilbeneThrough an extraction of distilled water and NaHSO3, impurities in the organic layer are removed, and moisture is removed with Na2SO4. The solvent is removed with an evaporator, trans-stilbene is precipitated with EtOH and filtered, cis-stilbene is precipitated with hexane and filtered.
출처 : 해피캠퍼스
목차
1. Objectives
2. Principles & Methods
3. Table of relevant chemical properties
본문내용
Objectives: Give a short description of the goals of this experiment.
In this experiment, p-nitroacetanilide is synthesized with nitration of acetanilide and separated through its crystallization and decanting. P-nitroaniline is synthesized through hydrolysis of P-nitroacetanilide and solid products are obtained through its crystallization and filtration. Calculate the yield of the product and develop the TLC.
출처 : 해피캠퍼스
목차
1. Results
2. Discussion
본문내용
The yield of 4-cyclohexene-cis-1,2-dicarboxylic anhydride was as low as 53.047%. The reason for the low yield is that the crystal was less made, prematurely crystallization occurred in the slightly cooled filter paper and glass funnel, and the crystal was lost in the filtration. Crystal could have been made more if the r.b.f. had been put in the ice-bath for longer. Since the filter paper and glass funnel were taken out of the oven and the filtration was started after 1-2 minutes, crystals were made on a slightly cooled surface of them.
출처 : 해피캠퍼스