2,3-Dihydrobenzofuran-5-carboxaldehyde → 2-Azido-3-(2,3-dihydro-benzofuran-5-yl)-acrylic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

To a cold (-10° C.) stirred solution of potassium tert-butoxide (6.06 g) in dry methanol (40 ml) was added dropwise a mixture of 2,3-dihydrobenzofuran-5-carboxaldehyde (2 g) and methyl azidoacetate (6.21 g). The mixture was stirred for 1 h at -10° C. and then stored at 0° C. for 18 h. The resulting pale yellow microcrystals were collected by filtration to give the title compound (3.12 g), m.p. 77°-80° C.

Provenance & Evidence