5601-45-6Relevant articles and documents
First zinc bromide promoted annulative domino reactions between enamines and cyclic Morita-Baylis-Hillman alcohols: Synthesis of N, O-ketals
Bouhalleb, Ghalia,Bourguiba, Noura Fakhar,Legros, Julien,Meddeb, Ahmed,Poli, Giovanni,Rezgui, Farhat
, p. 1282 - 1286 (2020)
A new efficient ZnBr 2-mediated annulative domino reaction between enamines and cyclic Morita-Baylis-Hillman (MBH) alcohols is disclosed. The process involves a tandem sequence (intermolecular conjugate addition of enamines to MBH alcohols and intramolecular nucleophilic addition of the hydroxyl moiety to the transiently generated iminium ion), affording the corresponding N, O -ketals diastereoselectively in good yields.
Direct palladium-catalyzed allylic alkylations of alcohols with enamines: Synthesis of homoallyl ketones
Bouhalleb, Ghalia,Mhasni, Olfa,Poli, Giovanni,Rezgui, Farhat
, p. 2525 - 2529 (2017/06/13)
An efficient, direct nucleophilic allylic substitution of α-, β- and γ-substituted alcohols with enamines, using the Pd(OAc)2/PPh3 catalyst system and ZnBr2 as a promoter in CH2Cl2 at reflux, is reported. The reaction course was dependent on the steric hindrance at the α- or γ-positions with respect to the functionalized α-carbon, selectively affording in moderate to good yields, α- or γ-homoallyl ketones, the so-called “linear” and “branched” products, respectively.
Direct Regio- and Diastereoselective Diphosphonylation of Cyclic Enamines: One-Pot Synthesis of α,α'-Bis(diphenylphosphoryl)- and α,α'-Bis(diphenylphosphorothioyl)cycloalkanones
Jebli, Nejib,Debrouwer, Wouter,Berton, Jan K.E.T.,Van Hecke, Kristof,Stevens, Christian V.,Touil, Soufiane
supporting information, p. 1160 - 1164 (2017/06/13)
A straightforward regio- and diastereoselective process has been developed for the synthesis of unprecedented symmetrical trans -α,α'-bis(diphenylphosphoryl)- and α,α'-bis(diphenylphosphorothioyl)-cycloalkanones, through the reaction of cyclic enamines with excess P -chlorodiphenylphosphine in the presence of triethylamine, followed by oxidation or sulfurization and hydrolytic workup.