Skip to main content
. 2022 Jul 22;12:12550. doi: 10.1038/s41598-022-16959-w

Table 2.

Synthesis of spiro[imidazo[1,2-a]indeno[2,1-e]pyridine-5,1'-indene (5a–d).

Entry Diamine Product Time (h) Yield (%)
1 graphic file with name 41598_2022_16959_Figh_HTML.gif graphic file with name 41598_2022_16959_Figi_HTML.gif 1 76
2 graphic file with name 41598_2022_16959_Figj_HTML.gif graphic file with name 41598_2022_16959_Figk_HTML.gif 2 72
3 graphic file with name 41598_2022_16959_Figl_HTML.gif graphic file with name 41598_2022_16959_Figm_HTML.gif 6 85
4 graphic file with name 41598_2022_16959_Fign_HTML.gif graphic file with name 41598_2022_16959_Figo_HTML.gif 7 61