Lecture 1: Key Concepts in Stereoselective Synthesis
... higher conversion than the addition of N-methylaniline under equilibrium conditions (entries 4 vs. 12). Because disubstituted olefins are more stable than mono-substituted olefins, the reactions of aniline to indene and 1,2-dihydronaphthalene (entries 5-6) were limited by thermodynamics. These preci ...
... higher conversion than the addition of N-methylaniline under equilibrium conditions (entries 4 vs. 12). Because disubstituted olefins are more stable than mono-substituted olefins, the reactions of aniline to indene and 1,2-dihydronaphthalene (entries 5-6) were limited by thermodynamics. These preci ...
Branched-Chain Alkanes
... Alkanes are written with structural formulas that are • expanded to show each bond • condensed to show each carbon atom and the attached hydrogen atoms ...
... Alkanes are written with structural formulas that are • expanded to show each bond • condensed to show each carbon atom and the attached hydrogen atoms ...
Catalytic, Enantioselective Alkylation of r
... although slight uncatalyzed reaction in THF solution at -50 °C between 1a and 2a was initially a cause for concern. Surprisingly, however, slow addition of 1.1 equiv enol silane 2a over the course of 2 h into a solution of the R-imino ester 1a containing 10 mol % of (R)-BINAP-AgSbF613 (3a) at -80 °C ...
... although slight uncatalyzed reaction in THF solution at -50 °C between 1a and 2a was initially a cause for concern. Surprisingly, however, slow addition of 1.1 equiv enol silane 2a over the course of 2 h into a solution of the R-imino ester 1a containing 10 mol % of (R)-BINAP-AgSbF613 (3a) at -80 °C ...
reactions of alcohols with alkenes over an aluminum
... whereas in a comparable reactions involving methanol and 2-methyl propene, Adams et al. (1982b) reported the production of dimers of the reactant alkene. Where secondary alcohols were used as reactants, the yield of the appropriate tertiary ether was less than with primary alcohols, and a tertiary a ...
... whereas in a comparable reactions involving methanol and 2-methyl propene, Adams et al. (1982b) reported the production of dimers of the reactant alkene. Where secondary alcohols were used as reactants, the yield of the appropriate tertiary ether was less than with primary alcohols, and a tertiary a ...
Organic Synthesis Part 2
... reduction (although some of the oxidations of olefins could equally well be regarded as additions), since the addition, elimination and substitution chemistry is pretty well taken care of from first year. We'll start our tour of FGI's by looking at reduction processes. Here are the main classes of r ...
... reduction (although some of the oxidations of olefins could equally well be regarded as additions), since the addition, elimination and substitution chemistry is pretty well taken care of from first year. We'll start our tour of FGI's by looking at reduction processes. Here are the main classes of r ...
Topic 8 notes - A
... Chloroalkanes and chlorofluoroalkanes can be used as solvents. One type in particular, known as chlorofluorocarbons (CFCs), are widely used in aerosols and fridges. Chlorofluorocarbons are haloalkanes containing chlorine and fluorine atoms but not hydrogen atoms, eg CCl2F2 or CClF3. The small chloro ...
... Chloroalkanes and chlorofluoroalkanes can be used as solvents. One type in particular, known as chlorofluorocarbons (CFCs), are widely used in aerosols and fridges. Chlorofluorocarbons are haloalkanes containing chlorine and fluorine atoms but not hydrogen atoms, eg CCl2F2 or CClF3. The small chloro ...
Chemical Engineering Principles of CVD Processes
... - usually no deposition occurs on them - with a low wall temp : the risk of contamination from vapor/wall reactions is reduced - Homogeneous reaction is suppressed (CH4 can not be used to reach acceptable deposition rates) Advantage: Flexibility, high cleanliness, high cooling rates & easy construct ...
... - usually no deposition occurs on them - with a low wall temp : the risk of contamination from vapor/wall reactions is reduced - Homogeneous reaction is suppressed (CH4 can not be used to reach acceptable deposition rates) Advantage: Flexibility, high cleanliness, high cooling rates & easy construct ...
CH 2
... 3. The positions of substituent groups are specified by numbering the longest chain of carbon atoms sequentially, starting at the end closest to the branching. H3C1 ...
... 3. The positions of substituent groups are specified by numbering the longest chain of carbon atoms sequentially, starting at the end closest to the branching. H3C1 ...
Scheme A Topic Checklist Atomic Structure 1.1
... know that alkanes are saturated hydrocarbons know that petroleum is a mixture consisting mainly of alkane hydrocarbons understand that different components (fractions) of this mixture can be drawn off at different levels in a fractionating column because of the temperature gradient understand that c ...
... know that alkanes are saturated hydrocarbons know that petroleum is a mixture consisting mainly of alkane hydrocarbons understand that different components (fractions) of this mixture can be drawn off at different levels in a fractionating column because of the temperature gradient understand that c ...
Cracking (chemistry)
In petroleum geology and chemistry, cracking is the process whereby complex organic molecules such as kerogens or heavy hydrocarbons are broken down into simpler molecules such as light hydrocarbons, by the breaking of carbon-carbon bonds in the precursors. The rate of cracking and the end products are strongly dependent on the temperature and presence of catalysts. Cracking is the breakdown of a large alkane into smaller, more useful alkanes and alkenes. Simply put, hydrocarbon cracking is the process of breaking a long-chain of hydrocarbons into short ones. More loosely, outside the field of petroleum chemistry, the term ""cracking"" is used to describe any type of splitting of molecules under the influence of heat, catalysts and solvents, such as in processes of destructive distillation or pyrolysis. Fluid catalytic cracking produces a high yield of petrol and LPG, while hydrocracking is a major source of jet fuel, Diesel fuel, naphtha, and again yields LPG.