反应详情

Prepared using General Procedure 1. A 2 mL microwave vial was charged with 2,4-dibromothiophene (15 mg, 0.06 mmol), tert-butyldimethyl((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-yl)oxy)silane IND INT-8 (23 mg, 0.06 mmol), potassium carbonate (26 mg, 0.18 mmol) and 3:1 mixture of DME/H2O (2 mL). The reaction mixture was degassed by bubbling N2 through the stirred solution for 10 min. Pd(PPh3)4 (5 mg, 0.004 mmol) was added and the solution degassed for an additional 2 min. The vial was subjected to microwave irradiation at 70° C. for 30 min or until starting material consumed. The resulting ((4-(4-bromothiophen-2-yl)-2,3-dihydro-1H-inden-1-yl)oxy)(tert-butyl)dimethylsilane THIO INT-4 was carried onto the next experiment without workup and purification. LCMS-ESI (m/z) calculated for C19H25BrOSSi: 408.1; no M+ found, tR=6.50 min (Method 1).

1. customPrepared
2. customThe reaction mixture was degassed
3. customby bubbling N2 through the stirred solution for 10 min
4. customthe solution degassed for an additional 2 min
5. customirradiation at 70° C. for 30 min
6. customconsumed
7. customThe resulting ((4-(4-bromothiophen-2-yl)-2,3-dihydro-1H-inden-1-yl)oxy)(tert-butyl)dimethylsilane THIO INT-4 was carried onto the next experiment without workup and purification