C4H8-C4H9Br-C4H9OH-C3H7COH-C3H7COOH-C3H7COOK
1)С4H8+HBr->C4H9Br 2)C4H9Br+KOH(водн.)->С4H9OH+KBr 3)C4H9OH+CuO-t>C3H7COH+Cu+H2O 4)C3H7COH+Ag2O=2Ag+C3H7COOH 5)C3H7COOH+KOH=C3H7COOK+H2O