共 50 条
Rapid ruthenium-catalyzed synthesis of pyranopyrandiones by reconstructive carbonylation of cyclopropenones involving C-C bond cleavage
被引:97
|作者:
Kondo, T
[1
]
Kaneko, Y
[1
]
Taguchi, Y
[1
]
Nakamura, A
[1
]
Okada, T
[1
]
Shiotsuki, M
[1
]
Ura, Y
[1
]
Wada, K
[1
]
Mitsudo, T
[1
]
机构:
[1] Kyoto Univ, Grad Sch Engn, Dept Energy & Hydrocarbon Chem, Sakyo Ku, Kyoto 6068501, Japan
关键词:
D O I:
10.1021/ja0260521
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Pyranopyrandiones were prepared by a novel ruthenium-catalyzed carbonylative dimerization of cyclopropenones via C-C bond cleavage. For example, treatment of dipropylcyclopropenone with a catalytic amount of Ru3(CO)12 and NEt3 in THF under 15 atm of carbon monoxide at 140 °C for 20 h gave a novel functional monomer, 3, 4, 7, 8-tetrapropylpyrano[6, 5-e]pyran-2, 6-dione, in an isolated yield of 81%. Unsymmetrically substituted pyranopyrandiones were also obtained by ruthenium-catalyzed carbonylative coupling of cyclopropenones with alkynes under similar reaction conditions. Copyright © 2002 American Chemical Society.
引用
收藏
页码:6824 / 6825
页数:2
相关论文