11 - DR CLEM KUEK
... The substitution reaction of propane is preferable to an addition reaction of propene because the addition of HCl to propene will result in the formation of unwanted 2-chloropropane. ...
... The substitution reaction of propane is preferable to an addition reaction of propene because the addition of HCl to propene will result in the formation of unwanted 2-chloropropane. ...
U. of Kentucky Chemistry 535 Synthetic Organic Chemistry Spring
... retrosynthetic analysis that leaves no doubt for the reader that you can make the molecule. You may start with molecules containing no less than eight carbon atoms. ...
... retrosynthetic analysis that leaves no doubt for the reader that you can make the molecule. You may start with molecules containing no less than eight carbon atoms. ...
The Baylis–Hillman reaction is an organic reaction of an aldehyde
... The Henry Reaction is a base-catalyzed C-C bond-forming reaction between nitroalkanes and aldehydes or ketones. It is similar to the Aldol Addition, and also referred to as the Nitro Aldol Reaction. If acidic protons are available (i.e. when R = H), the products tend to eliminate water to give nitr ...
... The Henry Reaction is a base-catalyzed C-C bond-forming reaction between nitroalkanes and aldehydes or ketones. It is similar to the Aldol Addition, and also referred to as the Nitro Aldol Reaction. If acidic protons are available (i.e. when R = H), the products tend to eliminate water to give nitr ...
lect2_htm
... This effect is important - avoided crossings are often the reason why chemical reactions have a barrier. The Rule applies to molecular orbitals as well as wavefunctions for whole molecules. For example, consider a situation where a molecule has two molecular orbitals. The energies of these MOs are ...
... This effect is important - avoided crossings are often the reason why chemical reactions have a barrier. The Rule applies to molecular orbitals as well as wavefunctions for whole molecules. For example, consider a situation where a molecule has two molecular orbitals. The energies of these MOs are ...
Kazzie`s Guide to Orgo 2
... Predict all possible products from the following reaction (Hints: 1- There is one for the cis formation and one for the trans formation (therefore stereochemistry is important) 2- One never works with a single molecule 3-No acid is available): NaBH4 O ...
... Predict all possible products from the following reaction (Hints: 1- There is one for the cis formation and one for the trans formation (therefore stereochemistry is important) 2- One never works with a single molecule 3-No acid is available): NaBH4 O ...
Chapter 3. Analysis of Environmental System 3.1 Analysis of a
... Eq.(3.1.3) may be solved without any difficulty if we follow the process as we have done so far. Especially, when discharging rate of a pollutant into the lake is constant, it is much easier because the condition is steady state, dC/dt = 0. ...
... Eq.(3.1.3) may be solved without any difficulty if we follow the process as we have done so far. Especially, when discharging rate of a pollutant into the lake is constant, it is much easier because the condition is steady state, dC/dt = 0. ...
Electrophilic Additions to Double Bonds
... each spatial orbital can be combined with an alpha or beta spin component to form a spin orbital ...
... each spatial orbital can be combined with an alpha or beta spin component to form a spin orbital ...
PES Topography - Materials Computation Center
... One CBF per occupied orbital on an atom E.g., H has one s function, C has 2s and 1p n-zeta n CBF per occupied orbital on an atom Valence n-zeta MBS for core (1s of C), n-zeta for valence Polarized Add higher angular momentum functions than MBS – e.g., d functions on C Diffuse or augmented Add much w ...
... One CBF per occupied orbital on an atom E.g., H has one s function, C has 2s and 1p n-zeta n CBF per occupied orbital on an atom Valence n-zeta MBS for core (1s of C), n-zeta for valence Polarized Add higher angular momentum functions than MBS – e.g., d functions on C Diffuse or augmented Add much w ...
III. ORGANIC CHEMISTRY Reactions
... The substitution of hydrogen on a benzene ring requires more energy than the same reaction with and aliphatic, saturated ring, but less energy than the same reaction on an aliphatic unsaturated ring (see p. 28). ...
... The substitution of hydrogen on a benzene ring requires more energy than the same reaction with and aliphatic, saturated ring, but less energy than the same reaction on an aliphatic unsaturated ring (see p. 28). ...
here - Global Change Program
... A Primer on Reduction-Oxidation (Redox) Chemistry The term “redox” refers to chemical reactions that involve reduction and oxidation of organic and inorganic substances. Redox reactions involve the transfer of electrons. When the process involves a loss of electrons, then it is called oxidation. A g ...
... A Primer on Reduction-Oxidation (Redox) Chemistry The term “redox” refers to chemical reactions that involve reduction and oxidation of organic and inorganic substances. Redox reactions involve the transfer of electrons. When the process involves a loss of electrons, then it is called oxidation. A g ...
Unit 15 Electrochemistry
... The more positive the Eored value for a half reaction, the greater the tendency for the reactant of the half reaction to be reduced and, therefore, to oxidize another species The half reaction with the smallest reduction potential is most easily reversed as an oxidation The Eored table acts as an a ...
... The more positive the Eored value for a half reaction, the greater the tendency for the reactant of the half reaction to be reduced and, therefore, to oxidize another species The half reaction with the smallest reduction potential is most easily reversed as an oxidation The Eored table acts as an a ...
Microsoft Word - Final Exam Study Guide
... synthesis of ethers, alcohols, and epoxides, dehydration of alcohols, carbocation rearrangements, reactions of alcohols/ethers/epoxides, multistep synthesis, protecting groups, redox reactions, reagents for redox reactions, Grignard reaction ...
... synthesis of ethers, alcohols, and epoxides, dehydration of alcohols, carbocation rearrangements, reactions of alcohols/ethers/epoxides, multistep synthesis, protecting groups, redox reactions, reagents for redox reactions, Grignard reaction ...
Microsoft Word - Final Exam Study Guide
... stability, elimination reactions, Zaitsev’s rule, E1 mechanism, E2 mechanism, antiperiplanar, comparing substitution and elimination mechanisms, synthesis of ethers, alcohols, and epoxides, dehydration of alcohols, carbocation rearrangements, reactions of alcohols/ethers/epoxides, multistep synthesi ...
... stability, elimination reactions, Zaitsev’s rule, E1 mechanism, E2 mechanism, antiperiplanar, comparing substitution and elimination mechanisms, synthesis of ethers, alcohols, and epoxides, dehydration of alcohols, carbocation rearrangements, reactions of alcohols/ethers/epoxides, multistep synthesi ...
Chapter 13 - WebAssign
... reaction shown in Figure 13.26. In this reaction, an ester reacts with water to produce a carboxylic acid and an alcohol. Write a step-wise mechanism for the following reaction: O + H2O O ...
... reaction shown in Figure 13.26. In this reaction, an ester reacts with water to produce a carboxylic acid and an alcohol. Write a step-wise mechanism for the following reaction: O + H2O O ...
Text Questions - Teach-n-Learn-Chem
... exists between two atoms a _________ domain. When two electrons are located principally on one atom, they constitute a ______________ (or _______) ______. 7. The three things that produce an electron domain around a central atom are… ...
... exists between two atoms a _________ domain. When two electrons are located principally on one atom, they constitute a ______________ (or _______) ______. 7. The three things that produce an electron domain around a central atom are… ...
Woodward–Hoffmann rules
The Woodward–Hoffmann rules, devised by Robert Burns Woodward and Roald Hoffmann, are a set of rules in organic chemistry predicting the barrier heights of pericyclic reactions based upon conservation of orbital symmetry. The Woodward–Hoffmann rules can be applied to understand electrocyclic reactions, cycloadditions (including cheletropic reactions), sigmatropic reactions, and group transfer reactions. Reactions are classified as allowed if the electronic barrier is low, and forbidden if the barrier is high. Forbidden reactions can still take place but require significantly more energy.The Woodward–Hoffmann rules were first formulated to explain the striking stereospecificity of electrocyclic reactions under thermal and photochemical control. Thermolysis of the substituted cyclobutene trans-1,2,3,4-tetramethylcyclobutene (1) gave only one diastereomer, the (E,E)-3,4-dimethyl-2,4-hexadiene (2) as shown below; the (Z,Z) and the (E,Z) diastereomers were not detected in the reaction. Similarly, thermolysis of cis-1,2,3,4-tetramethylcyclobutene (3) gave only the (E,Z) diastereomer (4).Due to their elegance and simplicity, the Woodward–Hoffmann rules are credited with first exemplifying the power of molecular orbital theory to experimental chemists. Hoffmann was awarded the 1981 Nobel Prize in Chemistry for this work, shared with Kenichi Fukui who developed a similar model using frontier molecular orbital (FMO) theory; because Woodward had died two years before, he was not eligible to win what would have been his second Nobel Prize for Chemistry.