78685-85-5Relevant academic research and scientific papers
Synthesis and structure determination of 2,3-diphenyl-2H-1,4-benzoxazin-2- ol
Marjani, Katayoun,Asgarian, Jafar,Mousavi, Mohsen
, p. 548 - 551 (2007)
A stable hemiacetal, 2,3-diphenyl-2H-1,4-benzoxazin-2-ol, was isolated as the main product from the reaction of benzil and o-aminophenol in THF. The structure of the product is confirmed by elemental analysis, common spectroscopic methods, and X-ray cryst
Preparation method of first-class benzoxazine compound
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Paragraph 0009; 0011, (2016/12/01)
The invention relates to a preparation method of a first-class benzoxazine compound .The structural formula of the prepared benzoxazine compound is shown in the drawing, wherein R1 is a hydrogen atom, an alkyl group, an aryl group, halogen, an alkoxy grou
Photochemical and Thermal Reactions of Aromatic Schiff Bases
Tauer, Erich,Grellmann, Karl H.
, p. 4252 - 4258 (2007/10/02)
The photochemical and thermal reactions of aromatic Schiff bases (SB) prepared from o-aminophenol and aldehydes and from o-aminophenol and ketones are compared.All SB's are converted by light into the corresponding benzoxazolines.For the SB's derived from aldehydes, benzoxazoline formation is a prerequisite to convert them by a second photon into benzoxazoles.In some cases oxygen is not required for this second reaction step.SB's derived from ketones are converted into benzoxazoles by the absorption of just one photon, but only in the presence of oxygen and only if the aliphatic residue R1 of the N=C(R1R2) bridge contains at least two carbon atoms.A radical mechanism is proposed for this reaction.Benzoxazine formation is observed in some cases as a thermal side reaction.The photochemical reactions of the latter were also investigated.
