SAMPLE PROBLEM
... Another feasible stereoselective retrosynthesis involves net addition of two nitrogen atoms across the double bond which should generate structure 8 from 9.1 The diastereoselectivity is controlled at this point but there will be a racemic mixture (two enantiomers in the reaction vessel) once the syn ...
... Another feasible stereoselective retrosynthesis involves net addition of two nitrogen atoms across the double bond which should generate structure 8 from 9.1 The diastereoselectivity is controlled at this point but there will be a racemic mixture (two enantiomers in the reaction vessel) once the syn ...
double-replacement reaction
... NaCl(aq) + LiNO3(aq) → NaNO3(aq) + LiCl(aq) Both NaNO3 and LiCl are soluble, so there is no reaction. ...
... NaCl(aq) + LiNO3(aq) → NaNO3(aq) + LiCl(aq) Both NaNO3 and LiCl are soluble, so there is no reaction. ...
Jan-Erling Bäckvall - The Scripps Research Institute
... Catalytic oxidation using environmentally benign terminal oxidants (O2, H2O2) is greatly facilitated by incorporation of electron transfer mediators into a catalytic system. Why? ...
... Catalytic oxidation using environmentally benign terminal oxidants (O2, H2O2) is greatly facilitated by incorporation of electron transfer mediators into a catalytic system. Why? ...
Exam 1 from 2008
... a) Identify the functional groups in amoxicillin. (I've done one for you.) b) Put an asterisk by all sp2 hybridized carbon atoms. c) Provide the approximate value for the indicated bond angle. d) Although this is the structure that is usually drawn for amoxicillin (e.g., see Wikipedia), it is not ac ...
... a) Identify the functional groups in amoxicillin. (I've done one for you.) b) Put an asterisk by all sp2 hybridized carbon atoms. c) Provide the approximate value for the indicated bond angle. d) Although this is the structure that is usually drawn for amoxicillin (e.g., see Wikipedia), it is not ac ...
Isomers
... Optical isomerism is present in all compounds that contain at least one asymmetric (chiral) carbon atom An asymmetric carbon atom has four different atoms or groups attached In this case there are two different ways to arrange the four groups around the chiral carbon atom (shown in ...
... Optical isomerism is present in all compounds that contain at least one asymmetric (chiral) carbon atom An asymmetric carbon atom has four different atoms or groups attached In this case there are two different ways to arrange the four groups around the chiral carbon atom (shown in ...
Worksheet 10.1
... Amine A homologous series containing the functional group –NH2. Secondary and tertiary amines respectively have one or two of the hydrogen atoms substituted by alkyl groups. Carbocation A species formed as an intermediate during a reaction that has a positive charge on a carbon atom. Tertiary carboc ...
... Amine A homologous series containing the functional group –NH2. Secondary and tertiary amines respectively have one or two of the hydrogen atoms substituted by alkyl groups. Carbocation A species formed as an intermediate during a reaction that has a positive charge on a carbon atom. Tertiary carboc ...
Chapter 11 Chemical Reactions
... 1) Assemble the correct formulas for all the reactants and products, using “+” and “→” 2) Count the number of atoms of each type appearing on both sides 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
... 1) Assemble the correct formulas for all the reactants and products, using “+” and “→” 2) Count the number of atoms of each type appearing on both sides 3) Balance the elements one at a time by adding coefficients (the numbers in front) where you need more - save balancing the H and O until LAST! ...
Organic Reactions
... Organic Reactions Why? Many organic reactions lead to products we use everyday. Organic reactions can be categorized by looking at the reactants used and the products formed. Soap, alcohol, fragrances, flavors, and flames in your gas barbeque are all products of organic reactions. ...
... Organic Reactions Why? Many organic reactions lead to products we use everyday. Organic reactions can be categorized by looking at the reactants used and the products formed. Soap, alcohol, fragrances, flavors, and flames in your gas barbeque are all products of organic reactions. ...
Investigating Esters
... not be possible to determine the boiling point by the distillation method and a semi micro method should be employed. The suggested method in the starter experiment is a generic one and may need to be slightly adjusted for each ester. Students should be encouraged to find details from the literature ...
... not be possible to determine the boiling point by the distillation method and a semi micro method should be employed. The suggested method in the starter experiment is a generic one and may need to be slightly adjusted for each ester. Students should be encouraged to find details from the literature ...
Chem 130 Fall 2004 Exam 3 Study Guide Chapter 8.1
... Conversion into alkyl halides (with HCl, HBr, SOCl2) Dehydration to form alkene (with H2SO4, concentrated, ∆) Oxidation: Primary alcohol to aldehydes (with PCC) Primary alcohol to carboxylic acids (with CrO3 or K2Cr2O7) Secondary alcohol to ketones (with PCC or CrO3 or K2Cr2O7) Tertiary alcoho ...
... Conversion into alkyl halides (with HCl, HBr, SOCl2) Dehydration to form alkene (with H2SO4, concentrated, ∆) Oxidation: Primary alcohol to aldehydes (with PCC) Primary alcohol to carboxylic acids (with CrO3 or K2Cr2O7) Secondary alcohol to ketones (with PCC or CrO3 or K2Cr2O7) Tertiary alcoho ...
Ring-closing metathesis
Ring-closing metathesis, or RCM, is a widely used variation of olefin metathesis in organic chemistry for the synthesis of various unsaturated rings via the intramolecular metathesis of two terminal alkenes, which forms the cycloalkene as the E- or Z- isomers and volatile ethylene.The most commonly synthesized ring sizes are between 5-7 atoms; however, reported syntheses include 45- up to 90- membered macroheterocycles. These reactions are metal-catalyzed and proceed through a metallacyclobutane intermediate. It was first published by Dider Villemin in 1980 describing the synthesis of an Exaltolide precursor, and later become popularized by Robert H. Grubbs and Richard R. Schrock, who shared the Nobel Prize in Chemistry, along with Yves Chauvin, in 2005 for their combined work in olefin metathesis. RCM is a favorite among organic chemists due to its synthetic utility in the formation of rings, which were previously difficult to access efficiently, and broad substrate scope. Since the only major by-product is ethylene, these reactions may also be considered atom economic, an increasingly important concern in the development of green chemistry.There are several reviews published on ring-closing metathesis.