HRID1053754

反应详情

EQUATION

反应方程式

HRID 1053754 的结构方程式

AUXILIARIES

试剂、催化剂与溶剂

1

CONDITIONS

反应条件

温度
0 °C

PROCEDURE

实验过程

Prepared using General Procedure 13. A 20 mL microwave vial was charged with 5-(5-bromooxazol-2-yl)-2-isopropoxybenzonitrile INT-32 (200 mg, 0.65 mmol), tert-butyldimethyl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-inden-1-yloxy)silane INT-30 (243 mg, 0.65 mmol), potassium carbonate (269 mg, 1.95 mmol) and a 3:1 mixture of dimethylethylene glycol/H2O (10 mL). The reaction mixture was degassed by bubbling N2 gas through the stirring solution for 10 min. Pd(PPh3)4 was added and the solution degassed for additional 2 min. The vial was subjected to microwave irradiation at 100° C. for 40 min. The vial was cooled to 0° C. and the resulting solid obtained was collected by filtration, washed with ice water, and dried to afford 290 mg (94%) of 5-(5-(1-(tert-butyldimethylsilyloxy)-2,3-dihydro-1H-inden-4-yl) oxazol-2-yl)-2-isopropoxybenzonitrile INT-33 as a light yellow solid. LCMS-ESI (m/z) calculated for C28H34N2O3Si: 474.7; found 475.2 [M+H]+, tR=5.90 min (Method 1). 1H NMR (400 MHz, CDCl3) δ 8.16-7.96 (m, 2H), 7.57-7.42 (m, 1H), 7.24-7.12 (m, 3H), 6.90 (t, J=10.4 Hz, 1H), 5.14 (t, J=7.0 Hz, 1H), 4.57 (dt, J=12.3, 6.1 Hz, 1H), 3.04 (ddd, J=16.1, 9.1, 3.1 Hz, 1H), 2.78 (dt, J=16.1, 8.1 Hz, 1H), 2.43-2.24 (m, 1H), 1.84 (ddd, J=15.8, 12.8, 8.9 Hz, 1H), 1.27 (t, J=5.8 Hz, 6H), 0.86-0.61 (m, 9H), 0.06-−0.14 (m, 6H).

WORKUP

后处理

  1. customPrepared
  2. customThe reaction mixture was degassed
  3. customby bubbling N2 gas through the stirring solution for 10 min
  4. additionPd(PPh3)4 was added
  5. customthe solution degassed for additional 2 min
  6. customirradiation at 100° C. for 40 min
  7. customthe resulting solid obtained
  8. filtrationwas collected by filtration
  9. washwashed with ice water
  10. customdried