CHEM 242 Organic Chemistry II-Bender
... There are no excused absences. Labs will be graded by quiz or a brief summary of the lab. Practice in running organic reaction mechanisms is the main goal of the laboratory exercises. Lab reports are due at the beginning of the next lab class. You are expected to have pre-lab information completed p ...
... There are no excused absences. Labs will be graded by quiz or a brief summary of the lab. Practice in running organic reaction mechanisms is the main goal of the laboratory exercises. Lab reports are due at the beginning of the next lab class. You are expected to have pre-lab information completed p ...
PPT File
... • Cyclization using C2 to C5 results in hemiketal formation. • In both cases, the carbonyl carbon is new chiral center and becomes an anomeric carbon ...
... • Cyclization using C2 to C5 results in hemiketal formation. • In both cases, the carbonyl carbon is new chiral center and becomes an anomeric carbon ...
Influence of alkyl chain length on sulfated zirconia catalysed batch
... For this two site mechanism, coordination of the alcohol (via the hydroxyl oxygen) and the organic acid (via the carbonyl oxygen to form a carbocation) is required at adjacent Brönsted acid sites. The nucleophilic species generated upon deprotonation of the alcohol OH can then attack the carbocation ...
... For this two site mechanism, coordination of the alcohol (via the hydroxyl oxygen) and the organic acid (via the carbonyl oxygen to form a carbocation) is required at adjacent Brönsted acid sites. The nucleophilic species generated upon deprotonation of the alcohol OH can then attack the carbocation ...
Low-valent titanium: New synthetic applications
... In our attempts to exrend the above protocol ro the synthesis of 2.3-dialkylbenzo[b]luram. i: n a s logical to use 2'-acetoxyacetophenone (5) as substrate. To our surprise, 2.3-dimerhylbenzo[b]furan ( 6 ) was not formed hut diarylalkane (9: R=H) was obtained as the major product along with minor amo ...
... In our attempts to exrend the above protocol ro the synthesis of 2.3-dialkylbenzo[b]luram. i: n a s logical to use 2'-acetoxyacetophenone (5) as substrate. To our surprise, 2.3-dimerhylbenzo[b]furan ( 6 ) was not formed hut diarylalkane (9: R=H) was obtained as the major product along with minor amo ...
mark scheme - A-Level Chemistry
... There is no change in the total amount / level of carbon dioxide / CO2 present in the atmosphere For M5 – must be about CO2 and the atmosphere. The idea that the carbon dioxide / CO2 given out equals the carbon dioxide / CO2 that was taken in from the atmosphere. ...
... There is no change in the total amount / level of carbon dioxide / CO2 present in the atmosphere For M5 – must be about CO2 and the atmosphere. The idea that the carbon dioxide / CO2 given out equals the carbon dioxide / CO2 that was taken in from the atmosphere. ...
Document
... 2. (a) A student investigated the effect of changing acid concentration on reaction rate. Identical strips of magnesium ribbon were dropped into different concentrations of excess hydrochloric acid and the time taken for the magnesium to completely react, recorded. A graph of the student's result ...
... 2. (a) A student investigated the effect of changing acid concentration on reaction rate. Identical strips of magnesium ribbon were dropped into different concentrations of excess hydrochloric acid and the time taken for the magnesium to completely react, recorded. A graph of the student's result ...
Chemistry Spell check on
... 2. (a) A student investigated the effect of changing acid concentration on reaction rate. Identical strips of magnesium ribbon were dropped into different concentrations of excess hydrochloric acid and the time taken for the magnesium to completely react, recorded. A graph of the student's result ...
... 2. (a) A student investigated the effect of changing acid concentration on reaction rate. Identical strips of magnesium ribbon were dropped into different concentrations of excess hydrochloric acid and the time taken for the magnesium to completely react, recorded. A graph of the student's result ...
solutions can`t be made accurately by weighing the solid, must be
... mixture we shall get another equal and opposite electron pressure on the voltmeter & the instrument will register 0.00V Only way to measure this pressure is to play one electrode off against another Connection between 2 solutions mustn’t be of metals, a salt bridge is used(a conducting solution of K ...
... mixture we shall get another equal and opposite electron pressure on the voltmeter & the instrument will register 0.00V Only way to measure this pressure is to play one electrode off against another Connection between 2 solutions mustn’t be of metals, a salt bridge is used(a conducting solution of K ...
Organic Chemistry Lecture Outline Chapter 21: Carboxylic Acid
... 1. Primary amides are usually prepared by reaction of two moles of ammonia with acyl halides, anhydrides or esters. 2. Secondary and tertiary amides are usually prepared by reaction of two moles either a primary amine (to give a secondary amide) or a secondary amine (to give a tertiary amide) with a ...
... 1. Primary amides are usually prepared by reaction of two moles of ammonia with acyl halides, anhydrides or esters. 2. Secondary and tertiary amides are usually prepared by reaction of two moles either a primary amine (to give a secondary amide) or a secondary amine (to give a tertiary amide) with a ...
Structural Characterisation by ESI-MS of Feruloylated Arabino-oligosaccharides Synthesised by Chemoenzymatic Esterification
... ternary water-organic mixture consisting of n-hexane, t-butanol and water, with about 40% and 20% conversion of sugar to the feruloylated derivative, respectively [7,6]. Commercial enzyme preparations from Humicola insolens, Thermomyces lanuginosus and Aspergillus niger exhibiting FAE activity were ...
... ternary water-organic mixture consisting of n-hexane, t-butanol and water, with about 40% and 20% conversion of sugar to the feruloylated derivative, respectively [7,6]. Commercial enzyme preparations from Humicola insolens, Thermomyces lanuginosus and Aspergillus niger exhibiting FAE activity were ...
BIOB111 - Tutorial activities for session 8
... compound is in the presence of another compound. Saturated and unsaturated hydrocarbons undergo different chemical reactions, as they have different levels of reactivity towards different compounds. Which of the following best explains the difference in reactivity between saturated and unsaturated h ...
... compound is in the presence of another compound. Saturated and unsaturated hydrocarbons undergo different chemical reactions, as they have different levels of reactivity towards different compounds. Which of the following best explains the difference in reactivity between saturated and unsaturated h ...
Catalytic Enantioselective Dibromination of Allylic Alcohols
... the introduction of polar functionality capable of binding to the metal might lead to improvements in the reactivity, selectivity, and product utility. Indeed, cinnamyl alcohol (6) was converted to dibromide (−)-7 with 43% ee using (R,R)-TADDOL 8 (entry 3). Allylic ethers, amides, and sulfonamides w ...
... the introduction of polar functionality capable of binding to the metal might lead to improvements in the reactivity, selectivity, and product utility. Indeed, cinnamyl alcohol (6) was converted to dibromide (−)-7 with 43% ee using (R,R)-TADDOL 8 (entry 3). Allylic ethers, amides, and sulfonamides w ...
Carbon-supported low-loading rhodium sulfide electrocatalysts for oxygen depolarized cathode applications
... acceptable results in terms of operating voltage upon incorporation in a conventional GDE. Even more resistant materials, various kind of rhodium sulfides, have been developed [3,4], which, in contrary to a simple rhodium based catalyst, do not require any conditioning step to completely survive in ...
... acceptable results in terms of operating voltage upon incorporation in a conventional GDE. Even more resistant materials, various kind of rhodium sulfides, have been developed [3,4], which, in contrary to a simple rhodium based catalyst, do not require any conditioning step to completely survive in ...
File
... the hydroxide it attached to. If the hydroxide is on the end of a chain and only connected to a carbon atom that is attached to only one other carbon atom it is known as a primary alcohol. If the hydroxide group is attached to a carbon atom which is also attached to two other carbons it is known as ...
... the hydroxide it attached to. If the hydroxide is on the end of a chain and only connected to a carbon atom that is attached to only one other carbon atom it is known as a primary alcohol. If the hydroxide group is attached to a carbon atom which is also attached to two other carbons it is known as ...
Osmium and cobalt complexes incorporating facially coordinated N
... vs SCE for [(L)Os(CO)(Br)(PPh3 )] and [(L)2 Co]ClO4 complexes displayed serial reductive responses within −0.06 to −1.61 V vs SCE. Single point DFT calculation was carried out to examine the nature of redox orbitals. Conversion of ketones to corresponding alcohols has been studied using [(L)Os(CO)(B ...
... vs SCE for [(L)Os(CO)(Br)(PPh3 )] and [(L)2 Co]ClO4 complexes displayed serial reductive responses within −0.06 to −1.61 V vs SCE. Single point DFT calculation was carried out to examine the nature of redox orbitals. Conversion of ketones to corresponding alcohols has been studied using [(L)Os(CO)(B ...
Crystal Field Theory and the Spectrochemical Series for Cobalt (III
... atoms and ions contain partially filled d-orbitals) is interesting, extensive, and complex. A coordination complex consists of a central (often transition) metal atom or ion that is surrounded by chemically bound molecules or ions. These bound molecules or ions are called ligands. The partial fillin ...
... atoms and ions contain partially filled d-orbitals) is interesting, extensive, and complex. A coordination complex consists of a central (often transition) metal atom or ion that is surrounded by chemically bound molecules or ions. These bound molecules or ions are called ligands. The partial fillin ...
1 - University of Missouri
... 4. Analyze the IR spectrum of your product, filling in the table below. You should utilize your course textbook (pp. 764-766), if you need assistance. Please note that the frequency given below should be exact (one number), not a range. Use the frequency of the center of the band at its strongest po ...
... 4. Analyze the IR spectrum of your product, filling in the table below. You should utilize your course textbook (pp. 764-766), if you need assistance. Please note that the frequency given below should be exact (one number), not a range. Use the frequency of the center of the band at its strongest po ...
Chemistry 332 Basic Inorganic Chemistry II
... Metal carbonyls, synthesis, structure, reactions Compounds with delocalized -conjugated organic ligands. Reactions and catalysis ...
... Metal carbonyls, synthesis, structure, reactions Compounds with delocalized -conjugated organic ligands. Reactions and catalysis ...
Hydroformylation
Hydroformylation, also known as oxo synthesis or oxo process, is an important homogeneously catalyzed industrial process for the production of aldehydes from alkenes. This chemical reaction entails the addition of a formyl group (CHO) and a hydrogen atom to a carbon-carbon double bond. This process has undergone continuous growth since its invention in 1938: Production capacity reached 6.6×106 tons in 1995. It is important because the resulting aldehydes are easily converted into many secondary products. For example, the resulting aldehydes are hydrogenated to alcohols that are converted to plasticizers or detergents. Hydroformylation is also used in specialty chemicals, relevant to the organic synthesis of fragrances and natural products. The development of hydroformylation, which originated within the German coal-based industry, is considered one of the premier achievements of 20th-century industrial chemistry.The process typically entails treatment of an alkene with high pressures (between 10 to 100 atmospheres) of carbon monoxide and hydrogen at temperatures between 40 and 200 °C. Transition metal catalysts are required.