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This is the answer to chapter 12 problem number 46 from the smith organic chemistry textbook.
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And so in these three problems, a, b, and c, these three parts of problem 46, were given three different dials and asked to show the alkenes from which these dials could have come under.
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Under two different conditions.
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So for a, for example, we are given this diol in the middle here.
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And so if we had made it from an alken using osmium tetroxide, the alken that we would use would be to the right here, this sysalkene.
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And if we had made it instead by using perisetic acid and then opening it with base and water, we would use this transalcine that we have to the left here.
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And so all three of these questions really follow this pattern.
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And the point of this question, number 46, is just to show you that these two sets of conditions, osmium tetroxide, followed by sodium, sulfite, and water, or parasitic acid, followed by hydroxide, and water, that they're complementary.
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So if we then go and we look at b, so for b, it's a dial, but the dials in the product that we're given are trans to one another...