Department of Chemistry‚ College of Science *Lady Jewellyn G. Diola; ladyjewellyndiola@yahoo.com Abstract Synthesis of 3‚4-dihydro-3-(p-methylphenyl)-1‚2-(2h)-benzoxazine involves the nucleophillic addition of the 1 °amine group upon the carbonyly group of the salicylaldehyde‚ the reduction of imine to amine and the addition of paraformaldehyde to proceed ring closure. The experiment prepared the product through Mannich reaction‚ a multicomponent condensation synthesis between
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Review Packet for midterm 1 10/2/2013 Nikki Stefanko & Stephanie Ventura 24 1. Cortisol is a steroid hormone produced by the adrenal cortex that is released in response to stress and a low level of blood glucocorticoids. OH O OH HO H H
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’Assess the impact of the development of communications on the settlement of the West’. A vital factor in the communicational development of the West was due to the completion of the Trans-Adlantic Railroad‚ of which was completed in 1869. The railroad created a new leash of exsistance in American‚ how the once baron‚ urban land‚ now to be industrialized and inhabited by all those who seek a new life. The Railroad however spelt disaster for the Native American Indian Tribes‚ whose lives were
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Chemistry (the etymology of the word has been much disputed)[1] is the science of matter and the changes it undergoes. The science of matter is also addressed by physics‚ but while physics takes a more general and fundamental approach‚ chemistry is more specialized‚ being concerned with the composition‚ behavior (or reaction)‚ structure‚ and properties of matter‚ as well as the changes it undergoes during chemical reactions.[2] It is a physical science which studies various substances‚ atoms‚ molecules
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The goals of this experiment are to determine if the products derived from amide synthesis and Williamson Ether Synthesis are identical‚ and if one of the synthetic routes is more advantageous than the other. In Part 1‚ an attempt to synthesize acteophenetidin crystals by amide synthesis was made. We began by removing the colored impurities from the p-Phenetidine (reddish-brown) by placing 2g of the sample in 38 mL of hydrochloric acid and heating the solution to boiling point. Upon reaching just
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contribute benefit to humankind. As time goes on‚ human has done many researches to ensure all these chemical substances will be enough for the use of themselves. 2 Chapter 9 of Form 4 syllabus introduces the students with manufactured substances in industry. This is important for the students to appreciate the knowledge of chemistry that is still new for themselves. Personally‚ I think that this chapter is an interesting chapter as it revealed the way of scientist produces the material around
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practical use in organic synthesis. This short review covers the recent developments of this area with an introduction to the historical background. 1 2 3 Introduction Reaction of Diazo Compounds with Organoboranes Reactions of Diazo Compounds with Boronic Acids and Related Organoborons Reaction of Diazo Compounds with Boronic Esters Concluding Remarks 4 5 Key words: diazo compounds‚ boron‚ hydrazine‚ transition-metalfree reactions‚ 1‚2-migration 1 Introduction Diazo
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CHEMISTRY III : (CHEMISTRY & YOU) 1 PRETEST 1. The science that tackles the study of matter‚ its structure and the changes in composition that matter undergoes is a. Astrology c. Ecology b. Chemistry d. Physics 2. When a chemist performs an experiment‚ the quantity that is being tested is the a. control c. theory b. law d. variable 3. Juan is comparing how many kilos of rice can be contained in a sack. What process is he doing? a. counting c. measurement b. interpolation
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II. Synthesis This activity helps me to understand myself better by knowing what people think of me. It aims to foster self-awareness and self-improvement. I found out that my family thinks that I am a responsible person in terms of sense of responsibility. But my brother thinks I’m immature. In terms of duties at home‚ my mother and father understand that I don’t perform my duties because I’m busy with my studies. My sister thinks it too but she justified that I perform when I’m not busy. When
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Chemistry Gen: Course Description Year 2 PART - II CGT 21a Unit I. Basic physical chemistry I * Gaseous state: Gas laws‚ kinetic theory of gas‚ collision and gas pressure derivation of gas laws from kinetic theory‚ average kinetic energy of translation. Boltzmann constant and absolute scale of temperature‚ Maxwell’s distribution law of molecular speeds (without derivation)‚ most probable‚ average and root mean square speed of gas molecules‚ principle of equipartition of energy (without
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