Synthesis and Rearrangement of Cage [4.3.2]Propellanes that Contain a Spiro Linkage
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DOI: 10.1002/ejoc.201700617
Abstract: Rearranged cage ketones 6a and 6b are reported in eight linear synthetic steps starting with 2,5-dimethoxybenzaldehyde 9 without the involvement of protecting groups. In this regard, Diels‒Alder reaction, [2+2]photocycloaddition and Lewis acid promoted rearrangement with… read more here.
Keywords: contain spiro; cage propellanes; synthesis rearrangement; rearrangement cage ... See more keywords
Synthesis and rearrangement reactions of 1,4-dihydrospiro[1,4-methanonaphthalene-9,1′-cyclopropane] derivatives
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DOI: 10.1016/j.tet.2018.07.060
Abstract: Abstract Reactions of benzyne with ester derivatives of spiro[2.4]hepta-4,6-dien-1-ylmethanol were performed. By rearrangement reaction of cyclopropyl methanol units of ((1s*,1′R*,2R*,4′S*)-1′,4′-dihydrospiro[cyclopropane-1,9'-[1,4]methanonaphthalen]-2-yl) methyl 3,5-dinitrobenzoate (13) and its isomer (14), corresponding allyl chlorides were obtained. Two rearrangement products… read more here.
Keywords: synthesis rearrangement; rearrangement reactions; cyclopropane; reactions dihydrospiro ... See more keywords