It may be prepared through a Diels-Alder reaction by refluxing tetraphenylcyclopentadienone and diphenylacetylene in benzophenone or other high-temperature solvent.
22.
For instance, balanol s benzophenone rings are positioned beside the glycine-rich loop and further from the more polar catalytic loop.
23.
Peroxides may be removed by washing with acidic iron ( II ) sulfate, filtering through alumina, or distilling from sodium / benzophenone.
24.
Benzophenone can also be added to plastic packaging as a UV blocker to prevent photo-degradation of the packaging polymers or its contents.
25.
The benzophenone and hexahydroazepane moieties are connected via an ester linkage, and the azepane and benzoyl moieties are connected through an amide linkage.
26.
In fact, in complex with PKA, balanol's distal benzophenone ring was observed to be nearly orthogonal with the neighboring ring.
27.
In the above reaction scheme, a mixture of gaseous hydrogen chloride and hydrogen sulfide are passed into a cooled solution of benzophenone in ethanol.
28.
A very effective way to remove any traces of water from THF is by reflux with sodium wire in the presence of a small amount of benzophenone.
29.
Thus, sodium / benzophenone can be used as an indicator of air-free and moisture-free conditions in the purification of solvents by distillation.
30.
Another early application is the synthesis of unnatural chiral amino acids in a formal reductive amination for example starting from benzophenone and the hydrazone of benzoyl chloride:
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