Reacción #166346

ord-48c680c372534bb49921c003ebc8bcf5

Condiciones de reacción

Temperatura
120°CELSIUS
Condiciones detalladas
See reaction.notes.procedure_details.

Tratamiento posterior

  1. 1
    OtroA 10 mL reaction tube vessel
  2. 2
    Otroan additional 30 minutes
  3. 3
    Otroat 140° C
  4. 4
    FiltraciónThe resulting solution was filtered through a 0.45 μM
  5. 5
    Filtraciónfilter
  6. 6
    Lavadowashed with water
  7. 7
    OtroThe solvent was removed in vacuo

Procedimiento

A 10 mL reaction tube vessel was charged with compound 269 (56.0 mg, 103 μmol) and concentrated hydrochloric acid (2.00 mL, 103 μmol). The reaction was heated with microwave energy (300 W) at 120° C. for 1 hour, then an additional 30 minutes at 140° C. The resulting solution was filtered through a 0.45 μM filter and washed with water. The solvent was removed in vacuo, and the residue coevaporated with water (10 mL) and then methanol (2×, 10 mL) to give compound 270 as a yellow solid (48 mg). 1H NMR (400 MHz, DMSO-d6) δ ppm 11.63-11.91 (m, 2 H) 9.40 (br. s., 4 H) 9.19 (s, 1 H) 8.50 (d, J=8.61 Hz, 1 H) 8.04 (d, J=2.74 Hz, 1 H) 7.99 (dd, J=9.39, 2.74 Hz, 1 H) 7.51 (d, J=9.39 Hz, 1 H) 6.69-6.78 (m, 1 H) 5.35 (quin, J=8.71 Hz, 1 H) 3.37-3.51 (m, 4 H) 3.20-3.34 (m, 4 H) 2.06-2.18 (m, 2 H) 1.93-2.06 (m, 2 H) 1.66-1.82 (m, 2 H) ppm.

Fuente

DOI: 10.6084/m9.figshare.5104873.v1Patente: US08841312B2uspto-grants-2014_09