0000000000427411
AUTHOR
C. Flo
ChemInform Abstract: First Reactions of Dialkoxycarbenium Tetrafluoroborates with Pyrroles, 5H-Dibenz(b,f)azepines, and Electron-Rich Arenes.
Pyrrole (2a) and 2,5-dimethylpyrrole (2b) react with the dialkoxycarbenium tetrafluoroborates 1a-1c under kinetic control to yield the corresponding acylpyrrole derivatives. 5H-Dibenz[b,f]azepine (9a) and the 10,11-dihydro derivative 9b react only with the most electrophilic of the series of electrophiles tested, namely, diethoxycarbenium tetrafluoroborate (1a), to furnish the corresponding formyl derivatives. Similarly, in arene chemistry, the highly electron-rich N,N-dimethylaniline (13a) and 1,3,5-trimethoxybenzene (13b) are formylated by reaction with 1a.
Convenient and Optimized Procedure for the Syntheses of Di- and Trialkoxycarbenium Tetrafluoroborates
Abstract A convenient and optimized procedure for the synthesis of some diand trialkoxycarbenium tetrafluoroborates under an argon atmosphere and using a specially developed apparatus is described.
First reactions of dialkoxycarbenium tetrafluoroborates with pyrroles, 5H-dibenz[b,f]azepines, and electron-rich arenes
Pyrrole (2a) and 2,5-dimethylpyrrole (2b) react with the dialkoxycarbenium tetrafluoroborates 1a-1c under kinetic control to yield the corresponding acylpyrrole derivatives. 5H-Dibenz[b,f]azepine (9a) and the 10,11-dihydro derivative 9b react only with the most electrophilic of the series of electrophiles tested, namely, diethoxycarbenium tetrafluoroborate (1a), to furnish the corresponding formyl derivatives. Similarly, in arene chemistry, the highly electron-rich N,N-dimethylaniline (13a) and 1,3,5-trimethoxybenzene (13b) are formylated by reaction with 1a.
ChemInform Abstract: Convenient and Optimized Procedure for the Syntheses of Di- and Trialkoxycarbenium Tetrafluoroborates.
Abstract A convenient and optimized procedure for the synthesis of some diand trialkoxycarbenium tetrafluoroborates under an argon atmosphere and using a specially developed apparatus is described.