𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On the formation and solvolysis of 4-aryl-2,2-difluoro-6-methyl-1,3,2-(2H)-dioxaborines

✍ Scribed by Gunter Görlitz; Horst Hartmann

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
209 KB
Volume
8
Category
Article
ISSN
1042-7163

No coin nor oath required. For personal study only.

✦ Synopsis

The condensation of aryl methyl ketones 6 with acetic anhydride 4a in the presence of the boron trifluorideacetic acid adduct 7 gives rise to the formation of 4aryl-2,2-difluoro-6-methyl-1,3,2-(2H)-dioxaborines 8 in satisfactory yields. The stable 4-aryl-2,2-difluoro-6methyl-1,3,2-(2H)-dioxaborines 8 can be transformed by hydrolysis into the corresponding aroylacetones 9. The reaction was optimized so as to avoid the formation of by-products, such as 2,4-diaryl-6-methylpyrylium tetrafluoroborates 11 or self-condensation products.

📜 SIMILAR VOLUMES

Electron impact mass spectrometric studi
Electron impact mass spectrometric studies of 2-methyl, 2-phenyl, 2-(1-piperidyl), 2-(2/3/4-pyridyl), piperidino and pyrido[4,3-d]-pyrimidin-4-ones
✍ Pentti Oksman; Kalevi Pihlaja; Ferenc Fülöp; Imre Huber; Gábor Bernáth; Mati Kar 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 245 KB

The title compounds were investigated to characterize their structure and fragmentation mechanisms by EI electron impact mass spectrometry (EI-MS) and collisionally activated decomposition. The results obtained on magnetic sector instruments show that the compounds fragment similarly whether the sub