N-[o-(1',1'-dimethyl-2'-oxo-propyl)-phenyl]-benzamidine

2,3,3-trimethyl-1-phenacylindoline

2,3,3-trimethyl-1,2-dihydroindole

2-phenyl-4,5,5-trimethyl-5H-1,3-benzodiazepine

2-methyl-pentan-3-one-phenylhydrazone