Potassium Phosphate, Tribasic → HCID 131732732, compound

Participants

Reaction Steps

The product from Example 86C (24.9 mg, 0.027 mmole) dissolved in a THF (1 mL) and water (0.3 mL) solution was combined in a microwave tube with phenylboronic acid (6.90 mg, 0.054 mmole), tribasic potassium phosphate (13.37 mg, 0.063 mmole) and 1,1′-bis(di-tert-butylphosphino)ferrocene palladium dichloride (1.42 mg, 2.17 μmole). The tube was sealed and nitrogen bubbled through at room temperature for five minutes. All gas lines were subsequently removed and the reaction vessel immersed in a 50° C. oil bath and heated for two and one half hours. The contents of the tube were partitioned between ethylacetate (5 mL) and brine (1 mL). The organic phase was washed with brine (2×1 mL) then dried over MgSO4, filtered and concentrated. The crude product was purified by silica gel chromatography eluting with 5% EtOAc-hexane and progressing to (75% EtOAc-hexane)+3% methanol to provide as a 1:1 mixture of (trans) diastereomers the title compound (18.6 mg, 75% yield) as a cream colored solid. 1H NMR (400 MHz, DMSO-D6) δ ppm 0.76-0.99 (m, 12H) 1.67 (s, 2H) 1.77-2.19 (m, 11H) 3.52 (s, 6H) 3.58-3.65 (m, 2H) 3.74-3.86 (m, 2H) 3.96-4.08 (m, 2H) 4.44 (d, J=4.99 Hz, 2H) 5.25 (s, 2H) 6.35 (d, J=8.02 Hz, 2H) 7.17 (d, J=7.26 Hz, 5H) 7.24-7.34 (m, 6H) 7.45 (d, J=7.92 Hz, 2H) 7.52 (d, J=7.81 Hz, 4H) 10.00 (s, 2H). MS ESI(+) m/[email protected] (M+H)+, m/[email protected] (M+CH3CN+NH4)+.

Provenance & Evidence