1. Starting with 2-methyl-3-hexanone, show the complete mechanism for the acid-catalyzed formation of the imine using propylamine (Pr-NH2.)
2. When 4,5-diethyl-3-octanol undergoes a dehydration reaction, 4,5-diethyl-4-octene forms. Show a complete mechanism for this reaction and the surprising step that leads to this product.