2,4-Di-tert-butylphenol → 2,4-Bis(1,1-dimethylethyl)-6-((4-methoxyphenyl)methyl)phenol

関与物質

反応手順

A mixture of 2,4-di-t-butylphenol (41.2 g), phosphorous acid (2 drops) and toluene (5 ml) was heated to 180°-200° in a three-necked flask fitted with a Dean-Stark trap containing toluene. 4-Methoxybenzyl alcohol (27.6 g) was melted and added in a slow stream to the mixture during 45 min. Heating was continued for a further 15 min by which time the theoretical amount of water (3.6 ml) had distilled. The reaction mixture was then distilled under pressure to give a pale yellow oil which rapidly crystallized. Recrystalization from methanol yielded colorless needless, m.p. and mixed m.p. with authentic material, 84°-85°; yield 59.3 g (91%). Found: C,80.9;H,9.26; calc for C,22H30O2 :C,81.0;H,9.21); 1Hmmr spectrum: δ1.30,9H,S; δ1.38,9H,S; δ3.79,3H,S; δ3.83,2H,S; δ4.61,H,S; δ6.84,2H,D(J=8 Hz); δ7.03, 1H,D(J=2 Hz); δ7.14,2H,D(J=8 Hz); δ7.23,1H,D(J=2 Hz).

情報源と証拠