Methyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)spiro[3.3]hept-5-ene-2-carboxylate → Methyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)cyclohexa-1,3-dienecarboxylate

Participants

Reaction Steps

The title compound was prepared following the method described in step 2 for the preparation of methyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)spiro[3.3]hept-5-ene-2-carboxylate, using methyl 4-(((trifluoromethyl)sulfonyl)oxy)cyclohexa-1,3-dienecarboxylate as the reactant. (46.6% yield). 1H NMR (400 MHz, CHLOROFORM-d) δ 7.00 (dt, J=5.3, 1.5 Hz, 1H), 6.75 (dt, J=5.3, 1.6 Hz, 1H), 3.74 (s, 3H), 2.42-2.35 (m, 2H), 2.34-2.27 (m, 2H), 1.26 (s, 12H).

Provenance & Evidence