A Novel Pentannulation Sequence. Facile Access to Key Intermediates for the Synthesis of<i>Exaltone</i>® and Muscone
作者:Charles Fehr
DOI:10.1002/hlca.19830660817
日期:1983.12.14
Treatment of the sulfonyl ketones 1a and 1b with potassium t-butoxide in toluene or with potassium hydroxide in toluene/dimethyl sulfoxide affords in high yield the bicyclic dienes 3a and 3b, important precursors for Exaltone® and (±)-muscone. An application of this novel pentannulation sequence is demonstrated for the sulfonyl ketones 6, 10, and 14. An intermolecular variant is exemplified by the
On the Construction of Bicyclo [m.3.0] Bridged Alkenes: Thermal Rearrangement of Spirocyclic Vinylcyclopropanes
作者:H.R. Sonawane、B.S. Nanjundiah、G.M. Nazeruddin
DOI:10.1016/s0040-4039(00)91696-4
日期:1992.3
A facile transformation of spirocyclic vinylcyclopropanes to titled bridged-alkenes is presented; this approach finds an application in the synthesis of natural product carbon framework of diverse nature such as that of precapnelladiene and muscone.
Polyunsaturated bicyclic compounds, their preparation and use of same as
申请人:Firmenich, SA
公开号:US04386220A1
公开(公告)日:1983-05-31
New polyunsaturated compounds, their preparation and their use as starting materials for preparing monounsaturated bicyclic compounds useful as intermediates in the preparation of macrocyclic ketones.