BENZOPINACOL FROM BENZOPHENONE BY PHOTOREDUCTION IN GREEN CHEMISTRY. 1 Lata.C.Potey‚ 2* Dr. Satish B. Kosalge‚ 3 Rajeshwari S. Sarode 1 2 Assistant Professor‚ Hi-Tech College of Pharmacy‚ Chandrapur. Principal‚ Hi-Tech College of Pharmacy‚ Chandrapur 3 Assistant Professor‚ Hi-Tech College of Pharmacy‚ Chandrapur. Date Received: 11 TH Jan 2014 Date of Accepted: th 16 Jan 2014 Date Published: 18th Jan 2014 Abstract: This is free radical reaction and reduction of benzophenone
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Maria Amos‚ and Paul Golubic CHEM 0330 Organic Lab 1 Sodium Borohydride Reduction: Diphenylmethanol from Benzophenone 11/16/11 Introduction Redox (shorthand for REDuction-OXidation) reactions are chemical reactions in which the oxidation state (or oxidation number) of atoms has changed. Oxidation can be observed through the loss of electrons or an increase in oxidation state by an atom‚ ion or molecule. Reduction describes the gain of electrons or decrease in oxidation state of an atom‚
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. Yes‚ comparably to TLC plate 2 and 3. The benzophenone is more neutral but as the same time its nonpolar‚ being that Silica gel in TLC 2 was polar and the solvent ethyl acetate-hexane is non-polar it moved relatively with the solvent. The stationary phase in TLC 3‚ alumina is non polar and the solvent ethyl acetate is polar so from the ideal that polar does not attract non-polar benzophenone stick stronger to alumina non-polar rather than moving up with polar solvent ethyl acetate as it did in
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wavelength Percentage concentration (methanol: water) Peak H value (height equivalent to a theoretical plate) (mm) 230nm 80:20 Phenol 0.0373 Benzophenone 0.0196 Naphthalene 0.0164 235nm 80:20 Phenol 0.0327 Benzophenone 0.0203 Naphthalene 0.0147 260nm 80:20 Phenol 0.0318 Benzophenone 0.0202 Naphthalene 0.0146 Figure 11: table for the height equivalent of the theoretical plates. It can be observed that the H values or height equivalent to a theoretical plate for phenol at the three wavelengths
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Experiment Date: 3/12/2012 Photochemistry: Photoreduction of benzophenone and rearrangement to benzpinacolone Abstract: In this experiment Benzpinacolone was synthesized in a process that contained two steps. First the photoreduction of benzophenone in 2-propanol‚ which was done by placing the flask under sunlightfor the absorption of the UV rays to carry out the reaction. Then the second part was the dehydration of benzpinacol to benzpinacolone‚ where the benzpinacol product was converted
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Triphenylmethanol from Benzophenone Purpose: The purpose of this experiment was to synthesize the tertiary alcohol triphenylmethanol from a Grignard reagent‚ phenyl magnesium bromide. The Grignard reagent was synthesized from bromobenzene and magnesium and then reacted with benzophenone to produce triphenylmethanol. It was important that water be excluded from the reaction‚ in order to prevent the formation of benzene. The reaction of phenyl magnesium bromide and benzophenone was quenched with sulfuric
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different melting point expected for the pure compound and a broadening of the melting point range. Such an observation would indicates that a compound is impure. In experiment 3.2‚ 0.120g sample of benzophenone was obtained from stock and crushed into a fine powder. Two samples of the benzophenone were loaded into a capillary tube. The capillary tubes were then individually placed in a Mel-Temp apparatus where they were gradually heated at a steady rate of 1º/minute. The melting rate was manually
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WHAT IS HARM REDUCTION? Harm reduction is a set of practical strategies intended to reduce the negative consequences of high risk behavior such as over drinking or drug abuse. Harm reduction is a non judgmental approach that attempts to meet people where they are at with their drinking or drug abuse. Instead of demanding perfect abstinence‚ this pragmatic approach is supportive of anyone who wishes to minimize the harm associated with a high risk behavior such as drinking or drug abuse. Harm
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the international poverty line include; – Guatemala‚ – Guinea-Bissau‚ – India‚ – Kenya‚ – Lesotho‚ – Madagascar‚ – Nepal‚ – Niger‚ – Senegal‚ – and Zambia • Analysts have found a strong positive relationship between economic growth and poverty reduction. • For example‚ East Asia (excluding China)‚which contains the world’s fastest-growing economies‚ reduced the share of its population living in poverty from 23 percent in 1987 to less than 14 percent in 1993. But in Sub-Saharan Africa‚ where negative
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Mohammed N. M. Sayan ESL 0405 ESL Advanced Writing Date: February 13th‚ 2013 Dr. J. Parla Palumbo Topic: Crime Reduction Title: What can I do to reduce crime? Thousands of crimes happen all over the world and increase exponentially every year. According to Nations Master’s website‚ more than twelve million crimes committed in the United states last year. "Crime statistics." nationmaster.com. Rapid Intelligence‚ 2002. Web. 25 February 2013. All of these crimes have happened due to high poverty
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