Unsaturated sultones with normal, medium and large ring sizes were efficiently synthesized by ring closing metathesis of sulfonates. The required substrates were readily derived from alkenols and olefinic sulfonyl chlorides.
Betylates. 3. Preparative nucleophilic substitution by way of [2]-, [3]-, and [4]betylates. Stoichiometric phase transfer and substrate-reagent ion-pair (SRIP) reactions of betylates
作者:J. F. King、S. M. Loosmore、M. Aslam、J. D. Lock、M. J. McGarrity
DOI:10.1021/ja00389a038
日期:1982.12
Reactivity of unsaturated sultones synthesized from unsaturated alcohols by ring-closing metathesis. Application to the racemic synthesis of the originally proposed structure of mycothiazole
作者:Alexandre Le Flohic、Christophe Meyer、Janine Cossy
DOI:10.1016/j.tet.2006.07.010
日期:2006.9
Unsaturated sultones have been synthesized from various primary or secondary alkenols by ring-closing metathesis of the corresponding unsaturated sulfonates. By treatment with a strong base, beta,gamma-unsaturated sultones can be metalated and subsequently alkylated with electrophiles. When iodomethylmagnesium chloride was selected as the electrophile, seven-membered ring beta,gamma-unsaturated sultones were converted into homoallylic conjugated (Z)-dienols. This methodology was applied to the racemic synthesis of the originally proposed structure of the marine natural product mycothiazole. (c) 2006 Elsevier Ltd. All rights reserved.
KING, J. F.;LOOSMORE, S. M.;ASLAM, M. LOCK, J. D.;MCGARRITY, M. J., J. AMER. CHEM. SOC., 1982, 104, N 25, 7108-7122
作者:KING, J. F.、LOOSMORE, S. M.、ASLAM, M. LOCK, J. D.、MCGARRITY, M. J.