Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 25245-29-8, name is 5-Iodo-1,2,3-trimethoxybenzene, A new synthetic method of this compound is introduced below., Computed Properties of C9H11IO3
Step 1: 2-(3,4,5-Trimethoxy-phenyl)-2,3-dihydro-furan (287) To a solution of 5-iodo-1,2,3-trimethoxybenzene (900 mg, 3.06 mmol) and 2,3-dihydrofuran (1.16 mL, 15.3 mmol) in dry DMF (8 mL) were added PPh3 (20 mg, 0.077 mmol), KOAc (901 mg, 9.18 mmol), n-Bu4NCl (850 mg, 3.06 mmol) and Pd(OAc)2 (17 mg, 0.077 mmol). The reaction mixture was stirred 18 h at 80 C. The reaction mixture was diluted with AcOEt and water. After separation, the organic layer was washed with brine, dried over anhydrous Na2SO4, filtered and concentrated. The crude residue was then purified by flash chromatography on silica gel (AcOEt/Hexane: 20/80) to afford the title compound 287 (311 mg, 1.32 mmol, 43% yield). 1H NMR: (300 MHz, CDCl3) delta (ppm): 6.59 (s, 2H), 6.45 (m, 1H), 5.45 (dd, J=10.5, 8.4 Hz, 1H), 4.97 (m, 1H), 3.87 (s, 6H), 3.84 (s, 3H), 3.06 (m, 1H), 2.62 (m, 1H).
The synthetic route of 25245-29-8 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; MethylGene, Inc.; US2004/142953; (2004); A1;; ; Patent; MethylGene, Inc.; US6897220; (2005); B2;,
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