110486-10-7
1,2,3,4-tetra-tert-butyl-4-(3,3-dimethylbutynyl)-1,3-diazonia-2,4-diboratacyclobutene
→
110486-11-8
1,2,3,4-tetra-tert-butyl-4-(phenylethynyl)-1,3-diazonia-2,4-diboratacyclobutene