2'-Bromo-2,7-di-tert-butyl-9,9'-spirobi[fluorene]

tert-Butyl 4-benzyl-1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate

tert-Butyl 6-chloro-2-oxo-1,2-dihydrospiro[benzo[d][1,3]oxazine-4,4'-piperidine]-1'-carboxylate

tert-Butyl 2,9-diazaspiro[5.5]undecane-2-carboxylate

9,9'-Spirobi[fluoren]-2-amine

2-(9,9'-Spirobi[fluoren]-4-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

2-(9,9'-Spirobi[fluoren]-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

4-Bromo-9,9'-spirobi[fluorene]

2-Butyl-3-((2'-(2-trityl-2H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)-1,3-diazaspiro[4.4]non-1-en-4-one

3,9-Di(cyclohex-3-en-1-yl)-2,4,8,10-tetraoxaspiro[5.5]undecane