14-33 continued HO (j ) 14-34 o (k)� OCH3 (n) ry."CH3 �1I0H H Br (I) �OH (a) On long-term exposure to air, ethers form peroxides. Peroxides are explosive when concentrated or heated. (For exactly this reason, ethers should never be distilled to dryness.) (b) Peroxide formation can be prevented by excluding oxygen. Ethers can be checked for the presence of peroxides, and peroxides can be destroyed safely by treatment with reducing agents. 14-35 (a) Beginning with (R)-butan-2-ol and producing the (R) sulfide requires two inversions of configuration.
This is the end of the preview.
access the rest of the document.