GENERATION OF ALLENIC SAMARIUM COMPLEXES FROM PSOPARGYLIC ETHERS AND (C(5)ME(5))(2)SM(THF)(2), AND THEIR ELECTROPHILIC TRAPPING

Authors
MAKIOKA Y KOYAMA K NISHIYAMA T TAKAKI K TANIGUCHI Y FUJIWARA Y
Citation
Y. Makioka et al., GENERATION OF ALLENIC SAMARIUM COMPLEXES FROM PSOPARGYLIC ETHERS AND (C(5)ME(5))(2)SM(THF)(2), AND THEIR ELECTROPHILIC TRAPPING, Tetrahedron letters, 36(35), 1995, pp. 6283-6286
Citations number
13
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron letters → ACNP
ISSN journal
00404039
Volume
36
Issue
35
Year of publication
1995
Pages
6283 - 6286
Database
ISI
SICI code
0040-4039(1995)36:35<6283:GOASCF>2.0.ZU;2-S
Abstract
Allenic samarium complexes are readily generated in high yields by the reaction of propargylic benzyl ethers with (C(5)Me(5))(2)Sm(thf)(2). Electrophilic trapping of the complexes derived from the secondary and tertiary ethers with cyclohexanone and dimethylphenylsifyl chloride g ives the corresponding propargylic products selectively, whereas alpha -allenic alcohols are predominantly obtained in the reaction of the co mplexes, generated from the primary ethers, with cyclohexanone.