p. 747 - 752
(1997)o-nitroiodobenzene
4-methyl-2'-nitrobiphenyl
4-tolyl iodide
4'-bromomethyl-2-nitrobiphenyl
2-butyl-1,3-diaza-spiro[4.4]non-1-en-4one
2-Butyl-3-[2'-(pyrrolidin-1-ylazo)-biphenyl-4-ylmethyl]-1,3-diaza-spiro[4.4]non-1-en-4-one
2-Butyl-3-(2'-iodo-biphenyl-4-ylmethyl)-1,3-diaza-spiro[4.4]non-1-en-4-one
4'-[(2-butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl]-[1,1'-biphenyl]-2-carbonitrile
3-(2'-Amino-biphenyl-4-ylmethyl)-2-butyl-1,3-diaza-spiro[4.4]non-1-en-4-one