Реакция #166346

ord-48c680c372534bb49921c003ebc8bcf5

Условия реакции

Температура
120°CELSIUS
Подробные условия
See reaction.notes.procedure_details.

Обработка

  1. 1
    ДругоеA 10 mL reaction tube vessel
  2. 2
    Другоеan additional 30 minutes
  3. 3
    Другоеat 140° C
  4. 4
    ФильтрацияThe resulting solution was filtered through a 0.45 μM
  5. 5
    Фильтрацияfilter
  6. 6
    Промывкаwashed with water
  7. 7
    ДругоеThe solvent was removed in vacuo

Методика

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.

Источник

DOI: 10.6084/m9.figshare.5104873.v1Патент: US08841312B2uspto-grants-2014_09