Rhodium(I)-catalyzed intramolecular carbonylative [2+2+1] cycloaddition of bis(allene)s: bicyclo[6.3.0]undecadienones and bicyclo[5.3.0]decadienones.
No templates needed: The title reaction makes it easy to construct the bicyclo[6.3.0]undecadienone framework in high yields (see scheme). A template effect is not required to achieve this ring-closing reaction efficiently. The present method can be applied to the construction of bicyclo[5.3.0] and bicyclo[4.3.0] ring systems. Ts = p-toluenesulfonyl.
Inagaki
Fuyuhiko
F
Division of Pharmaceutical Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
Narita
Syu
S
Hasegawa
Takuma
T
Kitagaki
Shinji
S
Mukai
Chisato
C
D000466:Alkadienes / Q000737:chemistry*; D001643:Bridged Bicyclo Compounds / Q000737:chemistry*; D002384:Catalysis; D003500:Cyclization; D012238:Rhodium / Q000737:chemistry*
D000466:Alkadienes; D001643:Bridged Bicyclo Compounds; C025947:propadiene; D012238:Rhodium