Et<sub>3</sub>B-mediated palladium-catalyzed direct allylic substitution reactions of Morita–Baylis–Hillman alcohols with aromatic amines
作者:Ahlem Abidi、Yosra Oueslati、Farhat Rezgui
DOI:10.1080/00397911.2016.1237652
日期:2016.12.1
ABSTRACT An efficient, direct allylic amination of both cyclic and acyclic Morita–Baylis–Hillman alcohols with aromatic amines, in tetrahydrofuran (THF) at room temperature, catalyzed by Pd(0)/Et3B, is reported herein. The corresponding amines are obtained with a high α -regioselectivity in 65–87% yields. GRAPHICAL ABSTRACT
Regiospecific carbon—carbon bond formation at α and β positions in cyclic ketones via double Michael addition to α-methylene-β-alkoxy cyclic ketone
作者:Takashi Takahashi、Kimihiko Hori、Jiro Tsuji
DOI:10.1016/0040-4039(81)80164-5
日期:——
Very reactive 2-methylene-3-alkoxycyclohexanone was synthesized. The 1,4-conjugate addition of various nucleophiles to this enone gave only β′-alkylated 2-cyclohexenone with simultaneous elimination of the β-alkoxy group. The second 1,4-conjugate addition of other nucleophile to the resulting cyclohexenone leads to the α and β disubstituted ketones.