Benzene → 2-benzhydryl-3,4-dihydro-2H-pyran

関与物質

反応手順

A solution of 1,1-diphenyl-2-(1-ethenoxy)-hex-5-ene 9 (5.1 g, 18.3 mmol) and Grubb's catalyst (1.5 g, 1.83 mmol) in benzene (200 ml) was heated under reflux for 20 hr. The solvent was removed under vacuo and the residue was chromatographed over silica gel (Hexane/Ethyl Acetate 20:1) to give 2-diphenyl-3,4-dihydro-2H-pyran 10 (4.25 g, 92.6%) as a liquid.

情報源と証拠