Reaction with benzophenone

Reactions with Benzophenone, l,2-Diphenyl-1,2-diketone, and 3,5-Di-tert-... 

Cycloaddition Reaction with Benzophenone and Thermolysis of the Product... 

TABLE 5. KIEs of RLi and RMgX in reactions with benzophenone and 2-octanone in diethyl ether at 20... 

Yields for reaction with benzophenone and CDjOD (over 90% deuteration) reaction with other electrophiles was unsuccessful. 

Some Olefins Which Do Not Undergo the Usual Photocycloaddition Reaction with Benzophenone... 

In reactions with benzophenone and aromatic vicinal polyketones, such as benzil, 1,3-diphenyl-propanc-l,2,3-trionc. and indane-l,2.3-trione monohydrate (ninhydrin). all the carbonyl oxygen atoms are replaced by fluorines to give the a,w-diphenylperfluoroalkanes 2 or 1,1.2,2,3,3-hexafluoroindane (3) in moderate yield. The yields increase upon the addition of hydrogen fluoride.41... 

Benzophenone (Amax = 340 nm, log e = 2.5, n-ir electronic transition) can be used as a photochemical reagent and eq. 4.25 shows a radical Michael-addition reaction with benzophenone. The formed benzophenone biradical (triplet state, Tx) abstracts an electron-rich a-hydrogen atom from methyl 3-hydroxypropanoate (62) to generate an electron-rich a-hydroxy carbon-centered radical [III], then its radical adds to the electron-deficient (3-carbon of a, (3-unsaturated cyclic ketone (63) through the radical Michael addition. The electrophilic oxygen-centered radical in the benzophenone biradical abstracts an electron-rich hydrogen atom from methyl 3-hydroxypropanoate (62) [70]. So, an a-hydroxy carbon-centered radical [III] is formed, and an electron-deficient a-methoxycarbonyl carbon-centered radical [III7] is not formed. 

Tetramethylammonium phenyl-trialkylborates in the photoinduced electron transfer reaction with benzophenone. Generation of alkyl radicals and their addition to activated alkenes. Tetrahedron Letters, 36, 5483-5486. 

Cyclopropylideneacetic esters, reaction with benzophenone imine, 57, 24... 

Since (substituted) benzophenone(s) are widely used for mechanistic studies, for different reasons (e.g., no a-hydrogens, so no enolization is possible high molecular weight, so products are easily detectable slower reaction, and so on), there is a tendency in modern publications to generalize reactions with benzophenone and to announce work as done with ketones in general. 

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