(1R,2S,3R,4S)-3-(2-Methylsulfanyl-acetyl)-bicyclo[2.2.1]hept-5-ene-2-carbaldehyde 在
potassium tert-butylate 作用下,
以
甲醇 为溶剂,
生成
(3aS,4R,7S,7aR)-2-Methylsulfanyl-3a,4,7,7a-tetrahydro-4,7-methano-inden-1-one 、 (3aS,4R,7S,7aR)-2-Methylsulfanyl-3a,4,7,7a-tetrahydro-4,7-methano-inden-1-one