Grubbs catalyst-mediated cycloisomerization of allenenes
摘要:
The novel ruthenium benzylidene catalyst-mediated cycloisomerization of allenenes, having an alkyl appendage at the allenic terminus, resulting in the construction of cyclohexene, tetrahydropyran, and tetrahydropyridine skeletons was developed. (c) 2006 Elsevier Ltd. All rights reserved.
Grubbs catalyst-mediated cycloisomerization of allenenes
摘要:
The novel ruthenium benzylidene catalyst-mediated cycloisomerization of allenenes, having an alkyl appendage at the allenic terminus, resulting in the construction of cyclohexene, tetrahydropyran, and tetrahydropyridine skeletons was developed. (c) 2006 Elsevier Ltd. All rights reserved.
The novel [RhCl(CO)(2)](2)-catalyzed [2 + 2 + 1] cycloaddition of allenenes leading to the bicyclo[4.3.0]non-1(9)-en-8-one as well as the bicyclo-[5.3.0]dec-1(10)-en-9-one skeletons has been developed. This method also provides a new procedure for the construction of the bicyclo[4.3.0]non-1(9)-en-8-one skeleton having an alkyl appendage at the ring juncture, which was hardly attained in a satisfactory yield by the Pauson-Khand reaction of the corresponding enynes.