Potassium Carbonate → FR 110302

Temperatur

70 °C

A mixture of (+)2,2-dibutyl-5-hydroxy-1,2,3,4-tetrahydro-1-naphtol(138mg), 2-chloromethylquinoline(89mg) and potassium carbonate(138mg) in N,N-dimethylformamide(1 ml) was stirred at 70° C. for 3 hours. The cooled mixture was poured into brine(10ml). The separated oil was extracted with brine(5 ml X 3). The combined organic layers were washed with brine(5 ml), dried over magnesium sulfate and concentrated in vacuo. The residue was purified by columnchromatography on silica gel(elution by 15% ethyl acetate in hexane) to give a pale yellow syrup. The residual syrup was crystallized from methanol to yield (+)-2,2-dibutyl-5-(2-quinolylmethoxy)-1,2,3,4-tetrahydro-1-naphtol(162 mg) as white solid.

1. extractionThe separated oil was extracted with brine(5 ml X 3)
2. washThe combined organic layers were washed with brine(5 ml)
3. dry with materialdried over magnesium sulfate
4. concentrationconcentrated in vacuo
5. customThe residue was purified by columnchromatography on silica gel(elution by 15% ethyl acetate in hexane)
6. customto give a pale yellow syrup
7. customThe residual syrup was crystallized from methanol

ORD-Eintrag

ord-0447ffaff54643dfab9930fde501d132

Quelldatensatz

uspto-grants-1991_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05045548