Phenylacetylene → Ethyl 2-(4-(phenylethynyl)phenoxy)acetate

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Reaktionsschritte

The title compound was prepared from ethyl 2-(4-iodophenoxy)acetate (550 mg, 1.80 mmol) and phenylacetylene (0.17 mL, 1.80 mmol) according to the general procedure IE to give 390 mg (78%) of an orange solid after purification by flash chromatography (SiO2, EtOAc/hexanes, 1:5). Rf: 0.26 (EtOAc:hexanes, 1:5); 1HNMR (CDCl3) δ 7.53-7.45 (m, 4H), 7.36-7.25 (m, 3H), 6.90-6.87 (m, 2H), 4.63 (s, 2H), 4.32-4.23 (dq, 2H, J=7.2 Hz, 2.1 Hz), 1.35-1.24 (tt, 3H, J=7.2 Hz, 1.5 Hz); 13CNMR (CDCl3) δ 168.6, 157.8, 133.1, 131.5, 128.3, 128.0, 123.4, 116.6, 114.7, 89.0, 88.4, 65.4, 61.5, 14.1; EI-MS m/z 280 (M+).

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