An aromatic α, β-unsaturated Ketone (2E,5E)-2,5 bis(4-isopropyl benzylidene) cyclopentanone (A) have been achieved by a Claisen-Schmidt reaction. A new hydrazone derivative 1-(2,5-bis((E)-4-isopropyl benzylidene) cyclopentylidene)-2-(2,4-dinitrophenyl) hydrazine (B) was synthesized by reacting under reflux chalcone (A) with 2,4-dinitrophenylhydrazine and evaluated for its biological activities. The structure
Herein, we report an efficient iridium-catalyzed double asymmetrichydrogenation of 2,5-dialkylienecyclopentanones, delivering the chiral 2,5-disubstituted cyclopentanones in excellent yields and stereoselectivities. The results of the kinetic experiments and control experiments indicated that the two C═C bonds were hydrogenated in a stepwise manner and the second stereocenter was synergistically controlled