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- For the following, complete the reactions with the predominant product or products. You must indicate stereochemistry with wedges and dashes. If a racemic mixture is created, you must write "racemic" under the structures.Write structures for products A, B, C, and D showinf stereochemistry. (Hint: B and D are stereoisomers)Provide the structure of the major organic product of the following reaction and? explain the stereochemistry which results in this product. 2-Pentanol reacting with 1.) PBr3, pyridine 2.) NaCN
- stion 9 of 14 Alkenes can be converted to alcohols by hydroboration-oxidation. (a) Draw the structure of the alcohol or alcohols formed in the reaction sequence. Clearly indicate stereochemistry by drawing a wedged bond, a dashed bond and two in-plane bonds chiral carbon. Draw hydrogen atoms that are connected to wedge-and-dash bonds.(b) Characterize the product or products of per each the reactions. Be sure to draw hydrogens on oxygen, where applicable. Select Draw Rings More Erase / /の|/| 1. B2H6, diglyme (a) 2. H2O2, HO¯, H2OIn a Finkelstein reaction, an alkyl chloride (R-CI) or alkyl bromide (R--Br) is treated with NaI in acetone to produce an alkyl iodide (R–I). Whereas NaI is soluble in acetone, NaCl and NaBr are not. Use this information to argue whether a Finkelstein reaction is reversible.Draw the structure of the expected organic produect formed in the following reactions including correct relative stereochemistry; if the reaction is racemic indicate this by either drawing both isomers or drawing one and writing racemic. Assume all reagent are present in excess unless otherwise noted. If no reaction occurs, state "No Reaction".
- Compare and contrast the physical and chemical properties of: propan-1-ol and propan-2-ol; . (E)-butenedioic acid (fumaric acid) and (Z)-butenedoic acid (maleic acid).Considering the stoichiometry of the reaction (balance the equation!), what is the net oxidation state difference of the carbons in benzophenone c to benzopinacol? Remember that you have to calculate the oxidation state of the carbons in the product (benzopinacol) and subtract the oxidation state of the carb the reactants (benzophenones). The shortcut is to only calculate the oxidation states of the carbons that seem to have changed their bonding Give a whole number answer with no units. OH hv Ph Ph OH Ph Ph Ph Ph OH Answer:13. (18 pts) Spiropentane, shown on the left, reacts with Cl2 in the presence of light to furnish the two products shown on the right. Given that Cl2 is readily cleaved by light, provide a detailed step-by-step mechanism for the formation of the two products from the common intermediate shown in brackets, and also show the mechanism for the formation of the common intermediate from spiropentane. Use curved arrows to detail electron flow. Cl Cl2 Cl Cl hv Cl Cl
- In the following molecules, the carbon with the double bond to oxygen is called the carbonyl carbon. Which molecule has the more electrophilic carbonyl carbon? Explain your reasoning. 11) For each of the following molecules, predict two possible products that can be formed by reaction with sodium cyanide (NaCN), then rank the two products in terms of stability. b) O a) ugateAlkenes can be converted to alcohols by hydroboration-oxidation. (a) Draw the structure of the alcohol or alcohols formed in the reaction sequence. Clearly indicate stereochemistry by drawing a wedged bond, a dashed bond and two O Hint in-plane bonds per each chiral carbon. Draw hydrogen atoms that are connected to wedge-and-dash bonds.(b) Characterize the product or products of the reactions. The first step of the reaction, hydroboration, involves addition of BH, to the double bond, with -BH, attached to one carbon and hydrogen Be sure to draw hydrogens on oxygen, where applicable. attached to the other. Consider both Rings the regioselectivity and the Select Draw More Erase stereochemistry of this addition. H Diborane, B,H,, is a source of borane, BH,, and can be used 1. B2H6, interchangeably. Diglyme is a solvent. diglyme 2. H2О2, НО", The product or products of the reaction are characterized as being O S. O racemic. O achiral. O R,S (and/or S,R). O R. O S,S. O R.R. O diastereomers.Draw the structure of the expected organic produect formed in the following reactions including correct relative stereochemistry; if the reaction is racemic indicate this by either drawing both enantiomers or drawing one and writing racemic. Assume all reagent are present in excess unless otherwise noted. If no reaction occurs, state "No Reaction".