Comparison of yields, experiment times and structures of specific imine coupled amine groups to anthracene core.

Compound	Yield (%)	Time (h)
2a	78	24 h
2b	60	24 h
2c	80	12 h
2d	65	24 h
2e	75	24 h
2f	—	48 h
2g	—	48 h
2h	—	48 h