Sulfuryl chloride → 5-chloro-2-[2-(5-chloro-2,4-dimethoxy-phenyl)ethyl]-2-cyclopentyl-4-hydroxy-3H-pyran-6-one

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Reaction Steps

The title compound was prepared by chlorination of 6-[2-(5-chloro-2,4-dimethoxy-phenyl)-ethyl]-6-cyclopentyl-dihydro-pyran-2,4-dione from step 6 of example B(15) with sulfuryl chloride in dichloromethane at room temperature. 1H NMR (CDCl3) δ 1.51 (m, 8H), 1.79 (m, 1H), 2.06, (m, 2H), 2.45 (m, 2H), 2.60 (m, 1H), 2.67 (d, J=17.75, 1H), 2.92 (d, J=17.75, 1H), 3.82 (s, 3H), 3.92 (s, 3H), 6.44 (s, 1H), 7.06 (s, 1H). HRMS calcd for C20H24O5Cl2 (M+H+) 415.1079, found 415.1063.

Provenance & Evidence