The Baeyer-Drewson indigo synthesis (1882)  je iseto idapapo sise organic eyi ti a maa n seto indigo lati 2-nitrobenzaldehyde ati acetone Won ko idapapo sise yii si aldol condensation.. 
Àjò pàtàkì tí ó soro níbẹ̀ ní ọ̀jọ̀jọ̀gbọ́n Professor Nathaniel Oyerinde, tí ó jẹ́ olùkọ ní ilé ẹ̀kọ́ ìwòjínjú Baptista, Ògbómọ̀sọ́, tí ó sì jẹ́ ọ̀jọ̀gbọ́n Baptist àkọ́kọ́ ti orílẹ̀ èdè Nàíjíríà.Wọ́n dá Baptist Boys’ High School sílẹ̀, tí ó sì wà bẹ́ẹ̀, gẹ́gẹ́ bí ilé ìwé fún àwọn ọkùnrin, bí wípé wọ́n kọ́ àwọn obìrin mọ́ àwọn obìrin ní ọdún 1969, nígbà 1969, nígbà tí àwọn àjọ tí àwọn ní ìwé.. School.. 