CNCT ORG CHEM 6 2020
CNCT ORG CHEM 6 2020
6th Edition
ISBN: 9781266807244
Author: SMITH
Publisher: MCG
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Chapter 28, Problem 61P
Interpretation Introduction

Interpretation: A structure for the highly cross-linked polymer, obtained from the reaction of urea [(NH2)C=O] with formaldehyde (CH2=O) is to be drawn.

Concept introduction: A thermosetting polymer has complex networks of covalent bonds, due to which it cannot be re-melted to bring in liquid phase. The chemical reaction for the formation of a thermosetting polymer is carried out in the presence of Lewis acid catalyst, which departs small molecules, like H2O as the by-product.

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For each reaction below, decide if the first stable organic product that forms in solution will create a new CC bond, and check the appropriate box. Next, for each reaction to which you answered "Yes" to in the table, draw this product in the drawing area below. Note for advanced students: for this problem, don't worry if you think this product will continue to react under the current conditions - just focus on the first stable product you expect to form in solution. ? NH2 MgBr Will the first product that forms in this reaction create a new CC bond? ○ Yes ○ No MgBr ? Will the first product that forms in this reaction create a new CC bond? O Yes O No Click and drag to start drawing a structure. :☐ G x c olo Ar HE
Predicting As the lead product manager at OrganometALEKS Industries, you are trying to decide if the following reaction will make a molecule with a new C - C bond as its major product: H₂N O H 1. ? 2. H3O+ If this reaction will work, draw the major organic product or products you would expect in the drawing area below. If there's more than one major product, you can draw them in any arrangement you like. Be sure you use wedge and dash bonds if necessary, for example to distinguish between major products with different stereochemistry. 0 If the major products of this reaction won't have a new CC bond, just check the box under the drawing area and leave it blank. فا Explanation Check Click and drag to start drawing a structure.
Highlight the chirality (or stereogenic) center(s) in the given compound. A compound may have one or more stereogenic centers. OH OH OH OH OH OH
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