Lecture 2 - Bonding in Organic Compounds
... • Alkanes are usually joined together by Van der Waals forces, which increase when the size of the alkane increases. • Their melting and boiling point also increases with size. • Alkanes are generally inert and liberate a lot of energy in combustion. (reaction with oxygen) • They are commonl ...
... • Alkanes are usually joined together by Van der Waals forces, which increase when the size of the alkane increases. • Their melting and boiling point also increases with size. • Alkanes are generally inert and liberate a lot of energy in combustion. (reaction with oxygen) • They are commonl ...
1b. Loss of N
... Na-K ATPase pump. By blocking this activity, it causes Ca2+ to be transported out more slowly; so heart muscle is exposed to Ca2+ for a longer period of time. As a result, the heart contracts more forcefully (“inotropic effect”) It also increases cholinergic stimulation to the heart, which slows it ...
... Na-K ATPase pump. By blocking this activity, it causes Ca2+ to be transported out more slowly; so heart muscle is exposed to Ca2+ for a longer period of time. As a result, the heart contracts more forcefully (“inotropic effect”) It also increases cholinergic stimulation to the heart, which slows it ...
Remodeling of the natural product fumagillol
... the limitation of traditional library synthesis by sampling new chemical space. Many natural products can be regarded as intriguing starting points for DOS, wherein stereochemically rich core structures may be reorganized into chemotypes which are distinctly different from the parent structure. Idea ...
... the limitation of traditional library synthesis by sampling new chemical space. Many natural products can be regarded as intriguing starting points for DOS, wherein stereochemically rich core structures may be reorganized into chemotypes which are distinctly different from the parent structure. Idea ...
Toluenediamine
... severe operating conditions, high capital and energy outlays. The catalysts used have a low selectivity and are unstable under conditions of continuous operation. To improve the process selectivity, various additives are often introduced into the reaction medium, this resulting in considerable outla ...
... severe operating conditions, high capital and energy outlays. The catalysts used have a low selectivity and are unstable under conditions of continuous operation. To improve the process selectivity, various additives are often introduced into the reaction medium, this resulting in considerable outla ...
CM1121 - ORGANIC CHEMISTRY 1
... ADVANCED PLACEMENT TEST MODULE DESCRIPTION CM1121 - Organic Chemistry 1 This module is intended for students majoring in Chemistry and Applied Chemistry. It deals primarily with the basic principles to understand the structure and reactivity of organic molecules. Emphasis is on substitution and elim ...
... ADVANCED PLACEMENT TEST MODULE DESCRIPTION CM1121 - Organic Chemistry 1 This module is intended for students majoring in Chemistry and Applied Chemistry. It deals primarily with the basic principles to understand the structure and reactivity of organic molecules. Emphasis is on substitution and elim ...
Chapter 20. Aldehydes and Ketones
... chemical yield would be high, our dedicated student prepared one mole of the Grignard reagent, added two moles of benzaldehyde, and, after working up the reaction, was delighted to obtain a good yield of a crystalline product. Unfortunately, the product that had been formed was benzophenone! On clos ...
... chemical yield would be high, our dedicated student prepared one mole of the Grignard reagent, added two moles of benzaldehyde, and, after working up the reaction, was delighted to obtain a good yield of a crystalline product. Unfortunately, the product that had been formed was benzophenone! On clos ...
http://www.twitter.com/chem442bausch - SIU
... place in two steps. The intermediate in this reaction is a… (a) carbon anion; (b) carboncentered radical; (c) carbocation (p 205) The characteristic reactions of alkenes are… (a) addition reactions; (b) substitution reactions; (c) rearrangement reactions; (d) elimination reactions (C-7,8) Which of t ...
... place in two steps. The intermediate in this reaction is a… (a) carbon anion; (b) carboncentered radical; (c) carbocation (p 205) The characteristic reactions of alkenes are… (a) addition reactions; (b) substitution reactions; (c) rearrangement reactions; (d) elimination reactions (C-7,8) Which of t ...
Pre-lab Questions - HCC Learning Web
... Alcohols with short carbon chains are quite soluble in water. Their solubility is due to intermolecular hydrogen bonding with water molecules. However, the water solubility of alcohols begins to decrease as the length of the carbon chain increases. As the number of carbon atoms increases, the non-po ...
... Alcohols with short carbon chains are quite soluble in water. Their solubility is due to intermolecular hydrogen bonding with water molecules. However, the water solubility of alcohols begins to decrease as the length of the carbon chain increases. As the number of carbon atoms increases, the non-po ...
Self-Test Worksheet for Thermodynamics Section (Quiz
... Use q = mc∆T for the heating of all the water (600,000 kg + 20,000 kg from the melted ice) from 0°C to 30 °C. q = (620 x 106 g) (4.18 J/g/°C) (30-0) = 7.77 x 1010 J = 7.77 x 107 kJ Total q = 6.68 x 106 kJ + 7.77 x 107 kJ = 8.44 x 107 kJ (b) Heater supplies 2.0 x 105 kJ/min, so it supplies 8.44 x 107 ...
... Use q = mc∆T for the heating of all the water (600,000 kg + 20,000 kg from the melted ice) from 0°C to 30 °C. q = (620 x 106 g) (4.18 J/g/°C) (30-0) = 7.77 x 1010 J = 7.77 x 107 kJ Total q = 6.68 x 106 kJ + 7.77 x 107 kJ = 8.44 x 107 kJ (b) Heater supplies 2.0 x 105 kJ/min, so it supplies 8.44 x 107 ...
Mild Reduction of Carboxylic Acids to Alcohols
... this last procedure is very efficient, we sometimes noticed the formation of different amounts of the ester derived from decarboxylation of the intermediate carbonic anhydride that occurred before the reduction step. The ester is not reduced by NaBH4 in water and must be separated from the desired a ...
... this last procedure is very efficient, we sometimes noticed the formation of different amounts of the ester derived from decarboxylation of the intermediate carbonic anhydride that occurred before the reduction step. The ester is not reduced by NaBH4 in water and must be separated from the desired a ...
CHEMISTRY
... much ZnCl2 is formed, it is necessary to divide 10 / mw of Zinc (65,37) to have the number of moles (= 0,153). The same number of moles of ZnCl2 (see reaction coefficients). The mass of ZnCl2 will be = number of moles (0,153) x mm of the salt (134,27) = 20,5 g In the above reaction H2 (gas) was form ...
... much ZnCl2 is formed, it is necessary to divide 10 / mw of Zinc (65,37) to have the number of moles (= 0,153). The same number of moles of ZnCl2 (see reaction coefficients). The mass of ZnCl2 will be = number of moles (0,153) x mm of the salt (134,27) = 20,5 g In the above reaction H2 (gas) was form ...
EXPERIMENT 3: The Grignard Reaction: Synthesis of
... The reactions involved in the synthesis of complex organic molecules can commonly be categorized into either functional group interconversions or skeleton building reactions. The latter category, primarily those involving carbon-carbon bond formations, is most important in anabolic organic synthesis ...
... The reactions involved in the synthesis of complex organic molecules can commonly be categorized into either functional group interconversions or skeleton building reactions. The latter category, primarily those involving carbon-carbon bond formations, is most important in anabolic organic synthesis ...
UNIT 1 - MATTER AND CHEMICAL BONDING
... 4. A compound contains 16.0 g of hydrogen and 96.0 g of carbon. If the molar mass of this compound is 28.06 g/mol, what is its molecular formula? 5. Calculate the percentage composition of each of the following: a) PbI2 b) NH4NO3 6. Balance the following equations: a) NH3(g) + O2 (g) NO (g) + H2O( ...
... 4. A compound contains 16.0 g of hydrogen and 96.0 g of carbon. If the molar mass of this compound is 28.06 g/mol, what is its molecular formula? 5. Calculate the percentage composition of each of the following: a) PbI2 b) NH4NO3 6. Balance the following equations: a) NH3(g) + O2 (g) NO (g) + H2O( ...
EX. Draw the structure of
... In a _____________ combustion reaction, a hydrocarbon reacts with oxygen to produce carbon dioxide, water vapour and energy. When fuels are burned with insufficient oxygen, _________________ combustion takes place. In these reactions, carbon monoxide (CO(g)) and even carbon soot (C(s)) can be produc ...
... In a _____________ combustion reaction, a hydrocarbon reacts with oxygen to produce carbon dioxide, water vapour and energy. When fuels are burned with insufficient oxygen, _________________ combustion takes place. In these reactions, carbon monoxide (CO(g)) and even carbon soot (C(s)) can be produc ...
Organic Reactions
... alkene, or an alkyne by its chemical formula (Table Q). • Know how to use the general formulas, and know. They often ask this question as part of a substitution or addition reaction question. ...
... alkene, or an alkyne by its chemical formula (Table Q). • Know how to use the general formulas, and know. They often ask this question as part of a substitution or addition reaction question. ...
Medicines and Drugs
... Core structure: beta-lactam (4 member ring with 1 N and 3 Cs) Responsible for antibacterial properties Irreversible enzyme inhibitor – prevents development of cross-links in cell wall weakens cell wall cell dies in reproductive phase ...
... Core structure: beta-lactam (4 member ring with 1 N and 3 Cs) Responsible for antibacterial properties Irreversible enzyme inhibitor – prevents development of cross-links in cell wall weakens cell wall cell dies in reproductive phase ...
www.xtremepapers.net
... example, that for nylon-6 is -[-NH(CH2)5CO-]- If the monomer is an alkene, the repeat unit is merely the alkene moiety with the double bond replaced by repeating single bonds: poly(propene) is –[CH2CH(CH3)-]-. For an addition copolymer, both monomers should be included in the repeat unit. For an add ...
... example, that for nylon-6 is -[-NH(CH2)5CO-]- If the monomer is an alkene, the repeat unit is merely the alkene moiety with the double bond replaced by repeating single bonds: poly(propene) is –[CH2CH(CH3)-]-. For an addition copolymer, both monomers should be included in the repeat unit. For an add ...
Name (Last, First):
... The organic chemist uses the term “oxidize” to refer to either of two processes: 1. The removal of two hydrogen atoms, with the formation of water (as in 2 a above) OR 2. The addition of an oxygen atom into the molecule. How would either of these two processes affect the “oxidation number” of the ca ...
... The organic chemist uses the term “oxidize” to refer to either of two processes: 1. The removal of two hydrogen atoms, with the formation of water (as in 2 a above) OR 2. The addition of an oxygen atom into the molecule. How would either of these two processes affect the “oxidation number” of the ca ...
Exp 4
... As discussed in class, the chemical combination of an alcohol and acid produces an ester (with the removal of a water molecule during the combination). As indicated above, alcohols, aldehydes, ketones and acids often have distinctive odors. Esters have unique odors as well. You will do reactions and ...
... As discussed in class, the chemical combination of an alcohol and acid produces an ester (with the removal of a water molecule during the combination). As indicated above, alcohols, aldehydes, ketones and acids often have distinctive odors. Esters have unique odors as well. You will do reactions and ...
國立嘉義大學九十二學年度
... (B) The molecules of an ideal gas are relatively far apart. (C) All molecules of an ideal gas have the same kinetic energy at constant temperature. (D) Molecules of a gas undergo many collisions with each other and the container walls. (E) Molecules of greater mass have a lower average speed than th ...
... (B) The molecules of an ideal gas are relatively far apart. (C) All molecules of an ideal gas have the same kinetic energy at constant temperature. (D) Molecules of a gas undergo many collisions with each other and the container walls. (E) Molecules of greater mass have a lower average speed than th ...
Chapter 16 Aldehydes and Ketones I. Nucleophilic Addition to the
... Reduction to an aldehyde can be accomplished by using a more reactive carboxylic acid derivatives such as an acyl chloride, ester or nitrile and a less reactive hydride source ...
... Reduction to an aldehyde can be accomplished by using a more reactive carboxylic acid derivatives such as an acyl chloride, ester or nitrile and a less reactive hydride source ...
Strychnine total synthesis
Strychnine total synthesis in chemistry describes the total synthesis of the complex biomolecule strychnine. The first reported method by the group of Robert Burns Woodward in 1954 is considered a classic in this research field. At the time it formed the natural conclusion to an elaborate process of molecular structure elucidation that started with the isolation of strychnine from the beans of Strychnos ignatii by Pierre Joseph Pelletier and Joseph Bienaimé Caventou in 1818. Major contributors to the entire effort were Sir Robert Robinson with over 250 publications and Hermann Leuchs with another 125 papers in a time span of 40 years. Robinson was awarded the Nobel Prize in Chemistry in 1947 for his work on alkaloids, strychnine included. The process of chemical identification was completed with publications in 1946 by Robinson and later confirmed by Woodward in 1947. X-ray structures establishing the absolute configuration became available between 1947 and 1951 with publications from J. M. Bijvoet and J.H. Robertson .Woodward published a very brief account on the strychnine synthesis in 1954 (just 3 pages) and a lengthy one (42 pages) in 1963.Many more methods exist and reported by the research groups of Magnus, Overman, Kuehne, Rawal, Bosch, Vollhardt, Mori, Shibasaki, Li, Fukuyama Vanderwal and MacMillan. Synthetic (+)-strychnine is also known. Racemic synthesises were published by Padwa in 2007 and in 2010 by Andrade and by Reissig.In his 1963 publication Woodward quoted Sir Robert Robinson who said for its molecular size it is the most complex substance known.