Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 626-18-6, name is 1,3-Benzenedimethanol. This compound has unique chemical properties. The synthetic route is as follows. name: 1,3-Benzenedimethanol
Example 4Dimer 18 (IGN-Ol):[221] To a stirred solution of 1,3-Benzenedimethanol 16 (11 mg, 0.08 mmol) in anhydrous dichloromethane (0.8 rnL) was added triethylamine (33 mul, 0.24 mmol) then methanesulfonyl chloride (16 muL, 0.21 mmol) dropwise in 15 minutes at -5 ~ -10 0C. The solution was stirred at – 5 – 10 0C for another 60 minutes and was quenched with ice/water, diluted with cold ethyl acetate. The mixture was separated and the organic layer was washed with cold water, dried over anhydrous sodium sulfate. It was filtered and the filtrate was evaporated by rotary evaporation in vacuo (temperature <; 35 0C). The residue 17 was high vacuumed for a few hours before being dissolved in anhydrous DMF (1.5 mL). IBD monomer 7 (94 mg, 0.32 mmol), anhydrous potassium carbonate (50 mg, 0.36 mmol) and potassium iodide (27 mg, 0.16 mmol) were added subsequently. The mixture was stirred at room temperature for 17 hours (checked by mass spectrum) and diluted with dichloromethane. It was washed with brine, dried over anhydrous sodium sulfate and filtered. The filtrate was evaporated under reduced pressure and the residue was purified by reverse phase HPLC (C 18 column, CH3CN/H2O, loaded column with CH3CN/H2O, 3:1, stirred for 30 min and centrifuged before injection) to furnish dimer 18 (IGN- 01, 6.6 mg) as a white solid. 1R NMR (400 MHz, CDCl3): delta 8.21 (d, J = 8.0 MHz, 2H), 7.79 (d, J = 4.4 MHz, 2H), 7.51 (s, 2H), 7.46 (s, IH), 7.36 (bs, 3H), 7.23-7.18 (m, 4H), 7.06-7.03 (m, 2H), 6.79 (s, 2H), 5.20 (d, J = 12.4 MHz, 2H), 5.14 (d, J = 12.4 MHz, 2H), 4.41 (ddd, Jl = 10.8 MHz, J2 = 4.4 MHz, J3 = 4.0 MHz, 2H), 3.92 (s, 6H), 3.64 (dd, Jl = 17.2 MHz, J2 = 11.2 MHz, 2H), 3.42 (dd, Jl = 16.8 MHz, J2 = 4.0 MHz, 2H); HRMS (ESI, m/z): calc. 691.2557 (M + H)+, found 691.2570. Example 5Dimer 19 (IGN-02):[222] To a stirred solution of 1,3-Benzenedimethanol 16 (10 mg, 0.074 mmol) in anhydrous dichloromethane (0.8 rnL) was added triethylamine (31 mul, 0.22 mmol) then methanesulfonyl chloride (15 muL, 0.19 mmol) dropwise in 15 minutes at -5 ~ -10 0C. The solution was stirred at - 5 - 10 0C for another 60 minutes and was quenched with ice/water, diluted with cold ethyl acetate. The mixture was separated and the organic layer was washed with cold water, dried over anhydrous sodium sulfate. It was filtered and the filtrate was evaporated by rotary evaporation in vacuo (temperature <; 35 0C). The residue 17 was high vacuumed before dissolving in anhydrous DMF (1.5 rnL). OBD monomer 14 (70 mg, 0.28 mmol), anhydrous potassium carbonate (51 mg, 0.37 mmol) and potassium iodide (25 mg, 0.15 mmol) were added subsequently. The mixture was stirred at room temperature for 17 hours (checked by mass spectrum) and diluted with dichloromethane. It was washed with brine, dried over anhydrous sodium sulfate and filtered. The filtrate was evaporated under reduced pressure and the residue was purified by reverse phase HPLC (C 18 column, CH3CN/H2O, loaded column with CH3CN/H2O, 3:1, stirred for 30 min and centrifuged before injection) to furnish dimer 19 (IGN- 02, 10.0 mg) as a white solid. 1H NMR (400 MHz, CDCl3): delta 7.75 (d, J = 4.0 MHz, 2H), 7.50-7.48 (bs, 3H), 7.38 (bs, 3H), 6.83 (s, 2H), 5.26 (d, J = 5.2 MHz, 2H), 5.21 (d, J = 14.4 MHz, 2H), 5.15 (d, J = 14.0 MHz, 2H), 5.03 (d, J = 5.6 MHz, 2H), 4.34-4.30 (m, 2H), 3.94 (s, 6H), 3.86-3.76 (m, 2H); HRMS (ESI, m/z): calc. 599.2142 (M + H)+, found 599.2184.
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Reference:
Patent; IMMUNOGEN, INC.; LI, Wei; FISHKIN, Nathan, Elliott; ZHAO, Robert, Yongxin; MILLER, Michael, Louis; CHARI, Ravi, V., J.; WO2010/91150; (2010); A1;,
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