Which would be the major isolated organic product of the reaction shown? LiNH, A) An internal alkyne B) A cis- alkene C) A trans- alkene D) A terminal alkyne E) a different product or a mixture of more than one of the choices in equal amounts
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- True/False question and multiple choice. explanatiom not needed. just give the answer. thank you. a) Williamson synthesis of ether requires un hindered alkyl halide and hindered alcohol b) NaBH4 can reduce a carboxylic acid to primary alcohol c) Conjugated diene reacts with which among the following to form a cyclohexene?1) Phenol2) Dienophile3) Hexane4) Tribromo phenol d) 1,3 -cyclohexadiene is 1. aromatic 2. has higher heat of hydrogenation than cyclohexene 3. is a good dienopile 4. has lower heat of hydrogenation than cyclohexeneWhich is the major isolated organic product of this reaction sequence? مرة (A) (C) Br + enantiomer Br Br Racemic 1. NaOCH3 2. Br₂ (B) (D) Br Racemic BrWhich would be the major isolated organic product of the reaction shown? O O A B U O E LINH, A) An internal alkyne B) A cis- alkene C) A trans- alkene D) A terminal alkyne Br E) a different product or a mixture of more than one of the choices in equal amounts
- Select the keyword or phrase that will best complete each sentence. Key terms: backside carbocation elimination frontside hyperconjugation inversion maintenance nucleophile product racemization stronger substitution weaker Alkyl halides undergo A orbital. reactions with Brønsted-Lowry bases. is a sp² hybridized and trigonal planar and contains a vacant p All SN2 reactions proceed with in attack of the nucleophile, resulting of configuration at a stereognic center. Spreading out charge by the overlap of an empty p orbital with an adjacent o bond is called Equilibrium favors the products of nucleophilic substitution when the leaving group is a base than the nucleophile. According the to Hammond postulate, the stability of the determines the rate of its formation. The formation of equal amounts of two enantiomeric products from a single starting material is called A is an electron-rich compound, which donates a pair of electrons to an electron deficient compound, forming a covalent bond.…149) Why is a tertiary alcohol more reactive with hydrogen halides, than secondary alcohols? Because secondary alcohols are smaller and therefore less reactive for the attack of halide nucleophile. Because tertiary alcohols have more hydrogen atoms available for substitution reactions. Because a tertiary alcohol can form a more stable carbocation as an intermediate in the reaction. Only the 1st and the 2nd statements are acceptable.Which of these statements is correct? A) Sn1 and Sn2 reactions create and break a bondto carbonB) Sn2 and E2 reactions create a carbon-carbondouble bondC) Sn2 and E2 reactions must have a Lewis baseD) The alkene in electrophilic additions of alkenesis the electrophileE) None of the above statements is correct
- addition of hbr to a double bond with an ether (-or) substituent occurs regiospecifically to give a product in which the Br OR are bonded to the same carbon. Draw the two possible carbocation intermediates in this electrophilic addition reaction,and explain using resonance why the observed product is formed.Based on the hydrogenation and the bromination reaction information, how many different alkene structures can you draw that could be Compound X? (If enantiomers are possible, count each pair of enantiomers as one structure.)Topic: Reactions of benzene Starting from benzene, synthesize the following compounds. Write the complete reagent/s and intermediate product/s. The step by step mechanism (movement of arrow) is not necessary.
- Draw the structure(s) for the major organic product(s) of each of the following reactions or write N.R for No Reaction. Draw the correct stereochemistry when necessary КОН MEOH DMF CI ..... t-BUOK MeONa THE THE heat heatBe sure to answer all parts. What alkenes are formed from the following alkyl halide by an E2 reaction? Use the Zaitsev rule to predict the major product. Br The major product is: draw structure .. The minor product is: draw structure ..Use the drop-down features to describe the given reaction. HBr ROOR Addition of HBr in the presence of peroxides results in the This regiochemistry is favored because the more stable radical intermediate Hint Question 2 ? Incorrect. anti-Markovnikov addition of H and Br across an alkene pi bond. ✓is involved. OH atom abstraction, followed by Br atom abstraction Addition of the Br atom to the alkene, followed by H atom abstraction Br atom abstraction, followed by H atom abstraction OH atom abstraction, followed by addition of the Br atom to the alkene O Protonation of the alkene, followed by combination with a Br atom Attempts: 1 of 3 used After formation of a Br atom radical (the initiation step), what is the most likely sequence of steps to generate the major product?