@article{weko_15050_1, author = "Okuno,Ryosuke and Matsuo,Jun-ichi and Ishibashi,Hiroyuki", title = "Titanium(IV) chloride-mediated ring cleavage and Michael addition of 3,3-dialkylcyclobutanones and 3-[(trimethylsilyl)methyl]-cyclobutanones", journal = "Chemical and Pharmaceutical Bulletin", year = "2012", volume = "60", number = "6", pages = "793--797", month = "jun" }