Potassium Phosphate, Tribasic → 5-[3,4-Dimethoxy-2-(3-methoxymethyl-oxetan-3-ylmethoxy)-phenyl]-3H-isobenzofuran-1-one

Participants

Reaction Conditions

Reaction Steps

3-(6-Bromo-2,3-dimethoxy-phenoxymethyl)-3-methoxymethyl-oxetane (0.02 g, 0.06 mmol) and 5-(4,4,5,5-Tetramethyl-[1,3,2]dioxaborolan-2-yl)-3H-isobenzofuran-1-one (Compound 309) (0.039 g, 0.14 mmol) were dissolved in 1,4-dioxan (0.6 mL). Argon was purged through the solution. Pd2(dba)3 0.001 g, 0.001 mmol) and PCy3 (0.0008 g, 0.003 mmol) were added followed by addition of K3PO4 (0.043 g, 0.2 mmol) in H2O (0.3 mL). The reaction mixture was heated in a microwave oven at 120° C. for 10 min. The mixture was filtrated, concentrated, redissolved in DMSO and purified by preparative HPLC to afford the title compound.

Provenance & Evidence