Why is concerted syn addition needed in the first step of X2 addition or mercurinium formation? 1.Syn addition occurs on both sides of the alkene bond to prevent cation formation and create a lower 2.energy interemdiate. 3.The alkene attacks the X2 from the top and bottom faces equally. 4.Only one face of the alkene can interact with the reagent. 5.No answer text provided.

Why is concerted syn addition needed in the first step of X2 addition or mercurinium formation? 1.Syn addition occurs on both sides of the alkene bond to prevent cation formation and create a lower 2.energy interemdiate. 3.The alkene attacks the X2 from the top and bottom faces equally. 4.Only one face of the alkene can interact with the reagent. 5.No answer text provided.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter19: Eas: Electrophilic Aromatic Substitution

Section: Chapter Questions

Problem 3CTQ

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Which is/are NOT TRUE about bimolecular nucleophilic substitution reactions? Select one or more: 1. A carbocation intermediate is formed. 2. A strong nucleophile displaces a halogen atom in a concerted mechanism. 3. Presence of polar aprotic solvents promotes this reaction. 4. Methyl halides react faster than secondary alkyl halides.
Which of the following is true? a. Alkene reaction always results into a mixture of products because both carbons in the double bond have equal chances of being used for binding. b. Only the more stable carbon is used for binding the nucleophile in alkene/alkyne reactions.(HA) c. A mixture of addition product is always formed with internal alkenes. d. None of the above
Acyl transfer (nucleophilic substitution at carbonyl) reactions proceed in two stages via a "tetrahedral intermediate." Draw the tetrahedral intermediate as it is first formed in the following reaction. H3C HCI / H2O `NH2 reflux • You do not have to consider stereochemistry. • Include all valence lone pairs in your answer. • Do not include counter-ions, e.g., Na", I, in your answer. • In cases where there is more than one answer, just draw one. opy aste Previous Next
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3. Answer the following questions based on the reaction scheme below. a. Use wedged and dashed lines to draw the (2S,4R)-2-iodo-4-methoxypentane configuration of 2-iodo-4-methoxypentane in labeled box. b. Draw the product(s) of the nucleophilic addition reaction shown. Make sure to use wedged and dashed lines to clearly show the resulting stereochemistry at each chiral center. Label each chiral center as R or S. If there is more than one possible product, draw one in each box - if not, leave one box blank. c. Write the correct chemical name of each product(s) in the labeled boxes. 2-iodo-4- methoxypentane + NaOCH 3 K[C6H1310] Product Name: Product Name: d. Are all the product(s) chiral? If your answer is 'yes' write 'yes' in the box below. If your answer is 'no', provide an explanation in 3 sentences or less in the box below.
Use the image below to answer the following three questions. Note: Subscripts are not shown in answer choices, ex: H2 should be H2, NH3 should be NH3. Product A Product B Product C a. The reagents that would selectively yield Product A are [Select] b. The reagents that would selectively yield Product B are [ Sclect] c. The reagents that would selectively yield Product C are [ Select]
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ited Draw both resonance structures of the most stable carbocation intermediate in the reaction shown. od m... • You do not have to consider stereochemistry. . Do not include anionic counter-ions, e.g., I', in your answer. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom Separate resonance structures using the → symbol from the drop-down menu. ● CH4 + ? HBr