Thionyl Chloride → HCID 86700498, compound

Participants

Reaction Conditions

Reaction Steps

Compound 3 was synthesized as described elsewhere with minor modifications.6 Briefly, a sample of 5-(tert-butyl)-2-hydroxy-3-isopropylbenzaldehyde (2) (5.08 g, 24.3 mmol) was combined with 2 equivalents of 4-(tert-butyl)-2-isopropylphenol (1) (9.17 g, 47.7 mmol) and 14 mL of methanol in a 100 mL schlenk flask. With a sodium carbonate trap connected to the reaction flask, the reaction mixture was cooled to 0° C. and thionyl chloride (11.4 mL, 157.7 mmol) was added dropwise causing an immediate change from orange/yellow to dark purple for the reaction mixture. The reaction was stirred overnight. The precipitate that was formed was collected by filtration. The residue was recrystallized from hexanes to afford 3 as a pale purple solid (6.88 g) in 48% yield with respect to the starting salicylaldehyde. 1H NMR (CDCl3-d) δ ppm 1.20 (27 H, s), 1.26 (18 H, d, J=6.9 Hz), 3.22 (3 H, spt, J=6.9 Hz), 4.91 (3 H, s), 5.83 (1 H, s), 6.81 (3 H, d, J=2.3 Hz), 7.18 (3 H, d, J=2.3 Hz). 13C-{1H} NMR, δ 22.7, 27.5, 31.4, 34.3, 41.8, 122.2, 123.7, 125.7, 135.0, 143.5, 148.9. Anal. calcd. for C40H58O3: C, 81.86; H, 9.96; N, 0.00. Found: C, 81.79; H, 10.32; N, 0.00.

Provenance & Evidence