반응 #52386

반응 방정식

potassium carbonate

3,4-dihydro-4,4-dimethyl-6-(trimethylsilanyl)ethynylspiro[2H-1-benzopyran-2,1′-cyclopropane]

[4-(8-cyclopropyl-2,2,4,4-tetramethyl-chroman-6-yl-ethynyl)-2-fluorophenyl] acetic acid ethyl ester

Intermediate 37

[4-(8-cyclopropyl-2,2,4,4-tetramethyl-chroman-6-yl-ethynyl)-2-fluorophenyl] acetic acid ethyl ester

→

title compound

6-Ethynyl-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1′-cyclopropane]

용매

methanol

반응 조건

실험 절차

Following general procedure E and using 3,4-dihydro-4,4-dimethyl-6-(trimethylsilanyl)ethynylspiro[2H-1-benzopyran-2,1′-cyclopropane] (Intermediate 37, 0.4 g, 1.42 mmol), potassium carbonate (0.98 g, 7.1 mmol) and methanol, the title compound was obtained as a yellow oil (0.3 g, 100%).

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