“…The collected organic layer dried with MgSO4 and the solvent was removed through vacuum evaporation. Then, purified by using column chromatography to obtain the product [22,25,26] 2.4.4. 10-(Alkyl)-3,7-bis(4,4,5,5-tetramethyl-1,3,2-dioxaboraolan-2-yl)-10H-phenothiazine (M1a-c) In a 2-neck flask, 6 mmol of 3,7-dibromo-10-(alkyl)-10H-phenothiazine is completely dissolved in 50 mL THF and stirred at -78 ℃ under nitrogen.…”