- Preparation method of benzyl aryl ether and application of benzyl aryl ether in synthesis
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and, 6-dihydrodibenzo [11 - b] oxazepine e -11 - ketone compounds are synthesized through a one-step reaction of benzaldehyde compounds and phenolic compounds through one-step reaction. The benzyl aryl ether and 6 and 11 -dihydrodibenzo [b, e] oxazepine -11 - ketone compound respectively have a chemical structure formula shown in a formula I and II. The invention discloses a synthesis method of the compound. Benzaldehyde compound After completion of the reaction, I, 6-dihydrodibenzo [11 - b] oxazepine e ketone compound -11 - can be synthesized through an oxidation or hydrolysis step and a ring closing step after the reaction is complete II.
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Paragraph 0044-0050
(2021/09/01)
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- Reactivity of functionalized arylcarbenes. 2-Phenylethyl side chains and hetero analogues
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Phenylcarbenes with -X-CH2Ph and -CH2-X-Ph (X = CH2, O, SiMe2) groups in the ortho position were generated thermally and photolytically from diazo or tosylhydrazone precursors. Stereorandom insertion reactions with β-C-H bonds were observed, pointing to a triplet abstraction-recombination mechanism. Large kinetic and stereochemical deuterium isotope effects support this notion. The ample formation of benzocyclobutenes from 2-CH2-X-Ph substrates is due to insertion of the carbenes into ArCH2-X bonds. Addition to the terminal phenyl groups competes with C-H and C-X insertion. The results of benzophenone sensitization and of trapping with methanol suggest that the intramolecular reactions of functionalized arylcarbenes proceed, at best, competitively with spin inversion.
- Kirmse, Wolfgang,Konrad, Wolfgang,Oezkir, Ismail S.
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p. 9935 - 9964
(2007/10/03)
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