General Papers ARKIVOC 2008 (xi) 131-141 Synthesis and biological evaluation of some new pyrimidines via a novel chalcone series Amit R.Trivedi‚ Dipti K. Dodiya‚ Naresh R. Ravat‚ and Viresh H. Shah* Department of Chemistry‚ Saurashtra University‚ Rajkot (Gujarat)‚ India‚ Pin-360005 E-mail: shah_v_h@yahoo.com Abstract In the present investigation ethyl 2-(4-carboxyphenylazo)acetoacetate 1 on condensation with various aromatic aldehydes in ethanolic NaOH solution yielded the corresponding
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Air Pollution Then the sky turned red‚ toxins over head‚ everybodies dead‚ everybodies dead. (GutterMouth; Nitro Records; 1995) In 1948‚ the industrial town of Donora‚ Pennsylvania suffered 28 deaths because of the thick smog. Air pollution is an ecological problem having to do with toxins in the air. There are a few things the human race has done to try to prevent air pollution from taking such a serious toll. Two of these are the Clean Air Acts and the increased use of solar power over coal
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recorded usage of gunpowder in a weapon were Chinese land mines developed in the 9th century. Gunpowder is not widely used as an explosive today‚ however‚ because more sophisticated explosives have been invented‚ such as plastic explosives (C4s) and nitro-explosives(ANFO explosives). Gunpowder looks like a grey-silver dust-like powder (shown below). It only retains its value as a firestarter in bullets.
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electron-withdrawing. Phenol contains a hydroxyl group. Oxygen‚ being electronegative‚ was suspected to be electron-withdrawing and hence it took longer time for the bromine to react with benzene. Nitrophenol contains two substituents‚ one of which is a nitro group which is electron-withdrawing. 2.) Sources of error if actual and theoretical doesn’t agree. Contaminated chemical reagents Inappropriate proportions Uncontrolled environmental factors such as light and temperature. Human errors 3.) Reactivity
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all require activation with microsomes for mutagenesis; this is characteristic of a variety of aromatic amine carcinogens. Nitrocarcinogens‚ such as 2nitrofluorene mutate the bacteria without microsomal activation though‚ the bacteria contains nitro reductases which activate them. Many hair dye components such as‚ pphenylenediamine‚ 2‚5diaminotoluene‚ and 2‚5diaminoanisole become strongly mutagenic after oxidation by H2O2 gives a very strong mutagenic response with strain when sulfur is
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PGP-1 Term-II AY 2010-11 Marketing-II Case – “Performance Indicator” Submitted By: Inderpreet Singh Identification of Protagonist Robb Osinski and Bob Winskowicz are business partners in Performance Indicator‚ LLC. Robb started as an entrepreneur as an undergraduate at Harvard by setting up a landscaping company. Bob started his career in sales in consumer health care. He eventually became the vice
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Rohm and Haas Executive Summary Joan Macy‚ Rohm and Haas (R&H) market manager for Metalworking Fluid Biocides‚ has the primary responsibility of marketing R&H’s new consumer packaged MWX metalworking fluid biocide aimed at the small‚ individual cutting fluid system market. MWX‚ has been on the market for the past five months‚ but has only $12‚000 in sales when it has been projected for $84‚000 during that time span. Initial surveys have shown that there is a vast potential for
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References: Markofsky‚ S. B. (2000). "Nitro Compounds‚ Aliphatic". Ullmann ’s Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a17_401.pub2 Noland‚ W. E. (1963)‚ "2-Nitroethanol"‚ Org. Synth.; Coll. Vol. 4: 833 Coetzee‚ J. F.; Chang‚ T.-H. (1986). "Recommended
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If you watch movies these days you know you’re sure to see some sort of violence whether it be a killing‚ beating‚ or some kind of cruel act. Now every time you watch TV‚ you are likely to see a commercial promoting a new movie with a catch title such as "Scream" or "Fear." Whether you think these movies are necessary or not‚ production companies know they will get the viewers and this is why they keep making them. I was watching a movie the other day‚ with my lovely girlfriend of course‚ by
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effect different salt concentrations have on the enzyme activity. Serial dilutions were performed to prepare a lactase solution as well as twenty percent‚ fifteen percent‚ and five percent concentrations of NaCl. Three different treatments of ortho-nitro-phenyl-galactoside‚ lactase‚ and perspective salt concentrations were prepared in cuvettes where the reaction would be observed and recorded from a spectrophotometer. Larger concentrations of salt adversely effect the reaction activity
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