Exam 2 sample questions
... 14. (3 points) Ozonolysis of the following ketone gives formaldehyde plus another organic product. What is this product, and why you wouldn’t expect to see any evidence of a carbonyl group in its spectra (e.g. no C=O stretch visible in the IR spectrum)? 1) O3, -78 °C OH ...
... 14. (3 points) Ozonolysis of the following ketone gives formaldehyde plus another organic product. What is this product, and why you wouldn’t expect to see any evidence of a carbonyl group in its spectra (e.g. no C=O stretch visible in the IR spectrum)? 1) O3, -78 °C OH ...
Today*s topic is*11 letters long
... organic compound made of one or more long chains of amino acids; key component of all cells ...
... organic compound made of one or more long chains of amino acids; key component of all cells ...
Macromolecules
... II. 7. Lipids are defined by their ___________________. They do not dissolve in polar solvents like _______________. Lipids are ________-________________. _________, _____________, ____________ and the __________ are all lipids. What is their function? One group, the ____________________ are the maj ...
... II. 7. Lipids are defined by their ___________________. They do not dissolve in polar solvents like _______________. Lipids are ________-________________. _________, _____________, ____________ and the __________ are all lipids. What is their function? One group, the ____________________ are the maj ...
Chapter 11 Carboxylic Anhydrides, Esters, and Amides
... an -OR group. R may be alkyl or aryl. • Both IUPAC and common names of esters are derived from the names of the parent carboxylic acids. • Name the alkyl or aryl group bonded to oxygen first, followed by the name of the acid; replace the suffix -ic acid by -ate. • A cyclic ester is called a lactone. ...
... an -OR group. R may be alkyl or aryl. • Both IUPAC and common names of esters are derived from the names of the parent carboxylic acids. • Name the alkyl or aryl group bonded to oxygen first, followed by the name of the acid; replace the suffix -ic acid by -ate. • A cyclic ester is called a lactone. ...
Diels-Alder Reaction:
... conformation is needed to carry out the Diels-Alder reaction. The s-cis conformation of the diene would yield a six membered ring with a cis double bond whereas a diene in s-trans conformation would demand a trans double bond in a six membered ring – an impossible feat. Cyclic dienes, which are lock ...
... conformation is needed to carry out the Diels-Alder reaction. The s-cis conformation of the diene would yield a six membered ring with a cis double bond whereas a diene in s-trans conformation would demand a trans double bond in a six membered ring – an impossible feat. Cyclic dienes, which are lock ...
oxidation and reduction
... In summary, the common mechanistic path A for chromium and many other metals involves formation of a metal ester followed by rate determining breakdown with loss of a proton. An alternative path B is sometimes followed – for example in some Mn(VII) oxidations – in which the carbon-bound hydrogen is ...
... In summary, the common mechanistic path A for chromium and many other metals involves formation of a metal ester followed by rate determining breakdown with loss of a proton. An alternative path B is sometimes followed – for example in some Mn(VII) oxidations – in which the carbon-bound hydrogen is ...
CHM2045 Final Exam Review, Spring 2017
... CHM2045 Final Exam Review, Spring 2017 1. The combustion of 40.10 g of a compound which contains only C, H, Cl and O yields 58.57 g of CO2 and 14.98 g of H2O. Another sample of the compound with a mass of 75.00 g is found to contain 22.06 g of Cl. What is the empirical formula of the compound? If th ...
... CHM2045 Final Exam Review, Spring 2017 1. The combustion of 40.10 g of a compound which contains only C, H, Cl and O yields 58.57 g of CO2 and 14.98 g of H2O. Another sample of the compound with a mass of 75.00 g is found to contain 22.06 g of Cl. What is the empirical formula of the compound? If th ...
Powerpoint File - University of Evansville Faculty Web sites
... Biology 107 Carbon and Molecular Diversity September 1, 2004 ...
... Biology 107 Carbon and Molecular Diversity September 1, 2004 ...
Chemical Equations and Reactions
... greater the activity is. • Metals: the greater the activity, the greater it loses electrons (to form cations) • Non-metals: the greater the activity, the greater it gains electrons (to form anions) • Activity series: a list of which elements a particular element can replace in a single replacement r ...
... greater the activity is. • Metals: the greater the activity, the greater it loses electrons (to form cations) • Non-metals: the greater the activity, the greater it gains electrons (to form anions) • Activity series: a list of which elements a particular element can replace in a single replacement r ...
Nomenclature of Polyfunctional Organic Compounds
... functional groups, we must choosejust one suffix for nomenclature purposes. It's not correct to use two suffixes. Thus, keto ester I must be named either as a ketone with an -onesuffix or as an ester with an -oate suffix but can't be named as an -onoate. Similarly, amino alcohol 2 must be named eith ...
... functional groups, we must choosejust one suffix for nomenclature purposes. It's not correct to use two suffixes. Thus, keto ester I must be named either as a ketone with an -onesuffix or as an ester with an -oate suffix but can't be named as an -onoate. Similarly, amino alcohol 2 must be named eith ...
Lecture 14 Organic and Biological Chemistry 1
... Definitions Molecular formula Number of atoms in a molecule (element or compound) e.g. C2H4O2 Empirical formula Simplest whole number ratio of atoms in a compound e.g. CH2O Structural formula Shows the shape and arrangement of atoms in a compound e.g. CH3COOH ...
... Definitions Molecular formula Number of atoms in a molecule (element or compound) e.g. C2H4O2 Empirical formula Simplest whole number ratio of atoms in a compound e.g. CH2O Structural formula Shows the shape and arrangement of atoms in a compound e.g. CH3COOH ...
Notes for Types of Reactions:
... chemical reaction = the _________ by which one or more substances are __________ into one or more _________ substances. in any chemical reaction, the _________ substances are known as the reactants and the __________ substances are known as the products. total mass of reactants = according to ...
... chemical reaction = the _________ by which one or more substances are __________ into one or more _________ substances. in any chemical reaction, the _________ substances are known as the reactants and the __________ substances are known as the products. total mass of reactants = according to ...
chapter 1 - Revsworld
... The combustion of 3.42 g of a compound known to contain only nitrogen and hydrogen was burned in oxygen. The result was the formation of 9.82 g of NO2 and 3.85 g of water. Determine the empirical formula of this compound. SHOW ALL WORK (a) (b) (c) (d) (e) ...
... The combustion of 3.42 g of a compound known to contain only nitrogen and hydrogen was burned in oxygen. The result was the formation of 9.82 g of NO2 and 3.85 g of water. Determine the empirical formula of this compound. SHOW ALL WORK (a) (b) (c) (d) (e) ...
J. Indian. Chem. Soc. 1999, 76, 631-639
... Uli Kazmaier, J. Indian. Chem. Soc. 1999, 76, 631-639. N-protected amino acid allylic esters can easily be deprotonated by LDA at -78 °C and transmetallated by addition of metal salts. Chelated metal enolates, which undergo Claisen rearrangements upon warming up to room temperature, giving rise to u ...
... Uli Kazmaier, J. Indian. Chem. Soc. 1999, 76, 631-639. N-protected amino acid allylic esters can easily be deprotonated by LDA at -78 °C and transmetallated by addition of metal salts. Chelated metal enolates, which undergo Claisen rearrangements upon warming up to room temperature, giving rise to u ...
Review questions
... use of a fractionating tower allows the separation of this mixture based on the boiling points of the hydrocarbons. To begin the separation process, the crude oil is heated to about 400°C in a furnace, causing many of the hydrocarbons of the crude oil to vaporize. The vaporized mixture is pumped int ...
... use of a fractionating tower allows the separation of this mixture based on the boiling points of the hydrocarbons. To begin the separation process, the crude oil is heated to about 400°C in a furnace, causing many of the hydrocarbons of the crude oil to vaporize. The vaporized mixture is pumped int ...
NYOS Charter School
... 14. Which of the following is true of equilibria reactions in chemistry? a. reactions with a large, positive Keq proceed very quickly b. all particle movement stops when equilibrium is reached c. particles are continuously moving back and forth between reactants and products d. the state of equilibr ...
... 14. Which of the following is true of equilibria reactions in chemistry? a. reactions with a large, positive Keq proceed very quickly b. all particle movement stops when equilibrium is reached c. particles are continuously moving back and forth between reactants and products d. the state of equilibr ...
Grignard Reaction - This is Synthesis
... 110 mg (4.5 mmol) Mg turnings in 2 mL dry THF were admixed with 0.42 mL (4 mmol) bromobenzene in an argon-flushed reaction vial. After the exothermic reaction has stopped, the vial is sealed with the silicone cap, placed in the reactor and heated for 20 min at 90 °C to form the Grignard reagent (see ...
... 110 mg (4.5 mmol) Mg turnings in 2 mL dry THF were admixed with 0.42 mL (4 mmol) bromobenzene in an argon-flushed reaction vial. After the exothermic reaction has stopped, the vial is sealed with the silicone cap, placed in the reactor and heated for 20 min at 90 °C to form the Grignard reagent (see ...
Solution
... C) pH of 0.01 M NH4Cl > pH of 0.01 M NH3 D) pH of 0.01 M NaCN > pH of 0.01 M CaCl2 14.) A blue advertising signs emits light with a wavelength of 400 nm. Which relationship is appropriate for directly calculating the frequency of this light? A) E = ½ mv2 B) En = -(Z2/n2) R∞ C) λ = c/ν D) E = hc/ λ E ...
... C) pH of 0.01 M NH4Cl > pH of 0.01 M NH3 D) pH of 0.01 M NaCN > pH of 0.01 M CaCl2 14.) A blue advertising signs emits light with a wavelength of 400 nm. Which relationship is appropriate for directly calculating the frequency of this light? A) E = ½ mv2 B) En = -(Z2/n2) R∞ C) λ = c/ν D) E = hc/ λ E ...
- Deans Community High School
... 18. A pupil made the ester ethyl propanoate in a test tube and poured the reaction mixture into a beaker containing sodium hydrogen-carbonate solution. a) Name the acid and alcohol used to make the ester. b) What two things would the pupil observe when the ester is poured into the sodium hydrogen- c ...
... 18. A pupil made the ester ethyl propanoate in a test tube and poured the reaction mixture into a beaker containing sodium hydrogen-carbonate solution. a) Name the acid and alcohol used to make the ester. b) What two things would the pupil observe when the ester is poured into the sodium hydrogen- c ...
Practice Exam 4 - BioChemWeb.net
... 1. (20 pts.) Circle the correct answer. a. Which compound has the lowest pKa for dissociation of an proton? O ...
... 1. (20 pts.) Circle the correct answer. a. Which compound has the lowest pKa for dissociation of an proton? O ...
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.