Preparation of chiral hexahydroquinolizinones and tetrahydroindolizinones by regio- and diastereoselective sonochemical cyclization of chiral dihydropyridines
Chiralhexahydroquinolizinones 13 and tetrahydroindolizinones 17 were prepared from functionalized chiraldihydropyridines by regio- and diastereoselectivesonochemicalcyclization.