"Electrophilic aromatic substitution" Essays and Research Papers

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    their age. For the treatment that is provided‚ it has divided into 6 groups‚ they are hot therapies‚ cold therapies‚ water therapies‚ touch therapies‚ relaxation therapies and exercises. First‚ for the hot therapies‚ its include sauna‚ steam‚ aromatic herbal bath‚ dry float‚ Rasul‚ etc. Second‚ for the cold therapies‚ its include ice fountain and frigidarium‚ etc. Third‚ for the water therapies‚ it means use of kind water for treatment‚ such as drinking water. Then‚ for the touch therapies‚

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    MABUHAY KA , ANAK KO

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    Flat Parsley or garden parsley (Petroselinum crispum) is a species of Petroselinum in the family Apiaceae‚ native to the centralMediterranean region (southern Italy‚ Algeria‚ and Tunisia)‚ naturalized elsewhere in Europe‚ and widely cultivated as an herb‚ a spice‚ and a vegetable. Where it grows as a biennial‚ in the first year‚ it forms a rosette of tripinnate leaves 10–25 cm long with numerous 1–3 cm leaflets‚ and ataproot used as a food store over the winter. Parsley is widely used

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    Luya or Ginger is widely distributed in the Philippines. It has a very aromatic rootstocks that contains active constituents like zingerone and shogaols that are responsible for pungent properties of ginger. But mostly of the therapeutic use of ginger are found on its rhizome. Gingerol is one of the active constituent that exert its antimicrobial effect. (Philippine Medicinal Plant 2014) Acne vulgaris is a common‚ chronic‚ multifactorial‚ polymorphic‚ inflammatory‚ non-infectious disease involving

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    lolo

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    leaves is used for stomach upsets and indigestion‚ headache. INTRODUCTION Oregano (Scientific name: Origanum vulgare) is also known as Wild Marjoram‚ Mountain Mint‚ Origanum‚ Wintersweet and Winter Marjoram. This erectly spreading plant has strong aromatic characteristics‚ with leaves and stems that are fleshy. The leaves of oregano are heart-shaped‚ with toothed edges‚ and which‚ grow for up to 9 meters in length. In other countries‚ the plant is primarily used as a culinary ingredient. However‚ in

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     Chuawong   Objectives   1. To  perform  bromination  of  trans-­‐cinnamic  acid   2. To  investigate  stereochemistry  of  bromination  reaction     Introduction   Alkenes   undergo   electrophilic   addition   to   give   alkyl   halides.   When   bromine   is   used   as   a   reagent‚  the  reaction  proceeds  via  2-­‐step  process.  The  first  step  involves  the

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    reaction (SN2‚ E2 etc)? E1 3. Why was acid employed in this reaction? The acid was used to protonate the leaving group (OH) to form water which is a much better leaving group than OH. 4. What role does the aromatic ring play in both intermediate and product formation? The aromatic ring is also benzyllic which helps us steer the reaction in the E1 pathway we are trying to achieve. It also forms a very stable carbocation which is essential for an E1 reaction to occur. The ring helps stabilize

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    CHEMISTRY ISU: REFINEMENT OF CRUDE OIL My ISU will focus on Petroleum‚ a complex mixture of hydrocarbons that occurs in the Earth in liquid‚ gaseous‚ or solid forms. The term is usually restricted to the liquid form‚ commonly called crude oil‚ but as a technical term it also includes natural gas and the viscous or solid form known as bitumen. In its liquid and gaseous states‚ it is also known as Oil‚ or Crude Oil. Italicized are segments from my ISU or introductions to the planned topics.

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    macromolecules‚ only a limited number of different side-chain chemical groups are available to function as catalysts. The myriad of enzyme-catalyzed reactions results from the ability of most of these groups to function either as nucleophilic‚ electrophilic‚ or general acid–base catalysts‚ and the key to their adapted chemical function lies in their states of protonation. Ionization is determined by the intrinsic pKa of the group and the microenvironment created around the group by the protein or

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    Epoxidation Reactions Lab Report 2 Abstract An oxygen atom is transferred from a peroxy acid to the carbon=carbon double bond thus forming an epoxide.  Scheme 1. Oxone Epoxidation. Scheme 2. mCPBA Epoxidation. The percent yield for the Oxone epoxidation reaction was 65% yield and the mCPBA epoxidation reaction was 70% yield. Oxone is the greener alternative because using mCPBA is twice as expensive as Oxone and leaves behind the epoxide plus m-chlorobenzoic acid while Oxone creates non-toxic

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    Chemistry of Coffee

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    Elisa Hofmeister Kokesh Hour 3 AP Chemistry 5-29-12 The Chemistry of Coffee Green Coffee- Before coffee is roasted‚ it is referred to as “green coffee”. The green coffee is primarily made up of caffeine‚ lipids‚ carbohydrates‚ proteins (amino acids)‚ and organic acids (although inorganic acids exist in coffee as well). These groups are quite stable in the green phase‚ and it is the carbohydrates‚ proteins‚ and acids that will undergo significant reactions during roasting to produce coffee

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