タケウチ　リョウ   TAKEUCHI Ryou   武内　亮    所属   青山学院大学  理工学部 化学・生命科学科    職種   教授
言語種別	英語
発行・発表の年月	2003/10
形態種別	学術雑誌
査読	査読あり
標題	Iridium Complex-Catalyzed Highly Selective Cross [2 + 2 + 2] Cycloaddition of Two Different Monoynes:  2:1 Coupling versus 1:2 Coupling
執筆形態	共同
掲載誌名	Organic Letters
掲載区分	国外
出版社・発行元	American Chemical Society
巻・号・頁	5(20),pp.3659-3662
総ページ数	4
担当区分	筆頭著者,責任著者
著者・共著者	Ryo Takeuchi, Yoshihiko Nakaya
概要	Highly selective cross [2 + 2 + 2] cycloaddition of two different monoynes is achieved by using a catalytic amount of [Ir(cod)Cl]2 and ligand. The ligand had a considerable effect on the reaction. When 1,2-bis(diphenylphosphino)ethane was used, two molecules of dimethyl acetylenedicarboxylate (DMAD) reacted with one molecule of a monoyne to give the 2:1 coupling product. When 1,2-bis(dipentafluorophenylphosphino)ethane was used instead of dppe, one molecule of DMAD reacted with two molecules of a monoyne to give the 1:2 coupling product.