반응 #52451

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[4-(1-benzyloxycyclopropyl)-3-ethyl-phenylethynyl]-trimethylsilane

Intermediate 89

[4-(1-benzyloxycyclopropyl)-3-ethyl-phenylethynyl]-trimethylsilane

potassium carbonate

→

4-Ethynyl-1-(1-benzyloxycyclopropyl)-2-ethyl-benzene

용매

methanol

반응 조건

실험 절차

Using General Procedure E; [4-(1-benzyloxycyclopropyl)-3-ethyl-phenylethynyl]-trimethylsilane (Intermediate 89, 240 mg, 0.69 mmol) in methanol (6 mL) was treated with potassium carbonate (10.0 mg, 0.72 mmol) and stirred overnight at ambient temperature. The crude alkyne (190 mg, 99%) was used directly in the next reaction. 1H NMR (CDCl3) δ: 7.43-7.15 (8H, m), 4.27 (2H, s), 3.08 (1H, s), 3.01 (2H, q, J=7.6 Hz), 1.26 (3H, t, J=7.6 Hz), 1.22 (2H, m), 0.92 (2H, m).

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