We report the regioselective trifluoromethylation of 1,3-bis(vinyl triflates) via an allyl radical intermediate. In this reaction, the trifluoromethyl radical exclusively attacks the 4-position of the 1,3-diketone derivatives. The observed regioselectivity can be rationalized on the basis of DFT calculations, which suggest that the attack at the 4-position is more favorable than that at the 2-position
MARTINEZ A. G.; ALVAREZ R. M.; CASADO M. M.; SUBRAMANIAN L. R.; HANACK M., TETRAHEDRON, 43,(1987) N 1, 275-279
作者:MARTINEZ A. G.、 ALVAREZ R. M.、 CASADO M. M.、 SUBRAMANIAN L. R.、 HANACK M.
DOI:——
日期:——
Studies on the reduction of cyclic 1,3-diketones via their triflates
作者:A. García Martínez、R. Martínez Alvareza、M. Madueño Casadoa、L.R. Subramanianb、M. Hanack
DOI:10.1016/s0040-4020(01)89955-5
日期:1987.1
Using 1,3-Cyclohexadione (1) and 5,5-dimethyl-1,3-Cyclohexadione (11) as examples, it is shown that 1,3-diketones can be transformed into monoketones, monoalcohols, alkanes and unsaturated ketones.
Facile access to 1,3-bis(boryl) dienes to build molecular complexity through cycloadditions
作者:Shannon M. Stephens、Jean M. Bray、Shayne M. Weierbach、Gessica M. Adornato、John A. Schrider、Kyle M. Lambert
DOI:10.1016/j.tetlet.2023.154381
日期:2023.3
An operationally simple method to access 1,3-bis(boryl) dienes from parent 1,3-diones via bis-triflation and a Pd0-catalyzed double Miyaura borylation is described. The prepared 1,3-bis(boryl) dienes are bench-stable and competent in [4+2] cycloadditions with common dienophiles affording diastereoselective access to borylated bicyclo[2.2.2]octenes. The addition of LaCl3·2 LiCl, as a mild Lewis acid