Experiment #5: Esterification of Methyl Benzoate from Benzoic Acid October 28‚ 2010 Abstract: This experiment was conducted to synthesize methyl benzoate from benzoic acid and methanol by using the Fischer esterification method. Methanol (12.5ml) and Benzoic acid (4.9 grams) are heated together in the presence of concentrated sulfuric acid (1.5ml) until equilibrium is achieved. A reflux apparatus is set up for 1 hour to carry out the reaction at the boiling point of the solvent (Methanol
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the substitution of a proton with a functional group. The electrophilic aromatic substitution reaction nitration is used to nitrate methyl benzoate and acetanilide with a nitronium ion. Crystallization was used to purify the product. The melting point was used to determine its purity and the regiochemistry of the products. The methyl benzoate reaction product‚ methyl nitrobenzoate‚ was determined to be meta-substituted and the acetanilide reaction product‚ nitroacetanilide‚ was determined to be para-substituted
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2-((6‚8-dibromo-2-(4-chlorophenyl)quinazolin-4-yloxy)methyl)-5-methyl-1‚3‚4-oxadiazole (IX) : A mixture of the hydrazide VII (0.01 mol) and acetic anhydride (30mL) was refluxed for 6h. The precipitated solid formed upon cooling‚ was filtered and recrystallized from ethanol‚ m.p. 155oC‚ 80% yield. Analysis calculated for C18H11Br2ClN4O2; Calcd.: %C‚ 42.34; H‚ 2.17; N‚ 10.97‚ Found: % C‚ 42.30; H‚ 2.14; N‚ 10.90. IR: υmax./cm-1 3000 (C-H aromatic)‚ 1610 (C=N) and at 1600 (C=C). 1H-NMR (DMSO-d6‚ ppm):
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The Grignard Synthesis of 3-methyl-3-heptanol In this experiment‚ an example of an organometallic compound which has a carbon magnesium bond will be utilized to form a tertiary alcohol. Grignard reagents have been extremely useful in the synthesis of a large number of classes of organic functional groups. Although Grignard reagents are unstable and decompose in air and moisture‚ they can be prepared and used immediately with moderate difficulty in the undergraduate organic chemistry laboratory
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EE314: CMOS RF Integrated Circuit Design Introduction to Wireless Communication systems Stanford University Hamid Rategh Hamid Rategh Stanford University EE314 HO#1 1 Course Staff Instructor: Dr. Hamid Rategh Email: hamid@smirc.stanford.edu Office Hours: MW 2:15-3:15PM @ CIS-126; Phone: 725-8313 TA: Mehdi Jahanbakht and Deji Akinwande Email: ta314@smirc.stanford.edu Office Hours @ Packard 106 Sunday 3:00 – 3:30 pm (for SCPD students only) Sunday 3:30 – 5:00 pm Thursday 5:00 –
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para-hydroxybenzoic acid‚ which is why they are collectively called parabens. However‚ in contrast to its cousins‚ ethylparaben‚ butylparaben‚ and propylparaben‚ methylparaben receives its specific name owing to the fact that its chemical structure contains the methyl alkyl group. Methylparaben is found in several fruits‚ in particular blueberries‚ where it acts as an antimicrobial agent. Methylparaben is an anti-fungal agent often used in a variety of cosmetics and personal-care products. Methylparaben is commonly
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and that is where other techniques are considered to treat pain that just will not go away with traditional pain relievers. Many doctors perform a procedure called Radiofrequency Ablasion (RFA) to minimize the nerves that signal the pain receptors. Rf Ablasion Edmond is used to help those who suffer from chronic neck and back pain find relief without an invasive surgical procedure that can mean long recovery times. Doctors perform ablasion therapy to benefit their patients‚ sparing them the discomforts
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and Engineering‚ NMIMS A Report On RF Network Planning For GSM and CDMA By Kashish Parikh UNDER THE GUIDANCE OF Prof Ravindra Bhatt(Lecturer)‚ Parminder Singh Sodhi(Dept Gen Manager) and Vivek Porwal(Junior Manager) Reliance Communications (8th May 2010) SVKM’s Narsee Monjee Mukesh Patel School of Technology Management and Engineering‚ NMIMS Certificate This is to certify that Kashish Parikh has submitted his report on RF Network planning under the guidance of Mr
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Communication styles a culture’s preferred ways of communication‚ given its core assumptions and norms.. Types of communication styles 1. Clear and Direct Clear and direct communication is the most healthy form of communication and occurs when the message is stated plainly and directly to the appropriate family member. An example of this style of communication is when a father‚ disappointed about his son failing to complete his chore‚ states‚ “Son‚ I’m disappointed that you forgot
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Glen Huang Period 9 Synthesis of Isopentyl Acetate Purpose: To prepare isopentyl acetate from isopentyl alcohol and acetic acid by the Fischer esterification reaction. Materials: West condenser‚ 250 mL round bottomed flask‚ two 250 mL flasks‚ heating mantle‚ boiling chips‚ graduated cylinder‚ sodium bicarbonate‚ isopentyl alcohol‚ glacial acetic acid‚ concentrated sulfuric acid‚ separatory funnel Procedure: 1. Place 50 mL of isopentyl alcohol in a 250 mL round bottom flask and add 60 mL
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