| 1. | It undergoes rapid polymerization, including forming a hemiacetal cyclic dimer.
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| 2. | These do not form as readily as hemiacetals and acetals.
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| 3. | The conversion of a hemiacetal to an acetal is an S N 1 reaction.
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| 4. | "' Cloxotestosterone acetate "'( chloro hemiacetal ether of testosterone.
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| 5. | Hemiacetals and hemiketals are generally unstable compounds.
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| 6. | Acetals are stable compared to hemiacetals but their formation is a reversible equilibrium as with esters.
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| 7. | The aminal and the hemiaminal groups are analogous to hemiacetals and acetals with nitrogen replaced by oxygen.
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| 8. | Glucose and many other aldoses exist as cyclic hemiacetals whereas fructose and similar ketoses exist as cyclic hemiketals.
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| 9. | Aldehydes such as formaldehyde for example, are hydrated by water ( they form hemiacetals and acetals ).
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| 10. | "' Cloxotestosterone "'( chloro hemiacetal ether of testosterone which was never marketed.
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