Key Concepts—Alkyl Halides and Nucleophilic Substitution

The electron pair in the C—Nu bond comes from the nucleophile. 

One o bond is broken and one o bond is formed. There are two possible mechanisms Sn1 and Sn2. 

43 Classify each alkyl halide in Problem 7.41 as 1°, 2°, or 3°. When a compound has more than one halogen, assign each separately. 

44 Draw the eight constitutional isomers having the molecular formula C5H11CI. 

45 Which compound in each pair has the higher boiling point  

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