Electroreductive Coupling of Phthalic Anhydrides with α,β-Unsaturated Carbonyl Compounds: Synthesis of 1,4-Dihydroxynaphthalenes
作者:Naoki Kise、Shota Yamamoto、Toshihiko Sakurai
DOI:10.1021/acs.joc.0c02000
日期:2020.11.6
Electroreductive coupling of phthalic anhydrides with α,β-unsaturatedcarbonylcompounds in the presence of TMSCl and subsequent treatment with 1 M HCl gave 1,4-dihydroxynaphthalenes and 2-methyl-2,3-dihydronaphthalene-1,4-diones.
Darstellung und reaktionen von 1,3-bis-(trimethylsiloxy)-isobenzofuranen
作者:T. Troll、K. Schmid
DOI:10.1016/s0040-4039(01)81342-3
日期:1984.1
1,3-Bis-(trimethylsiloxy)-isobenzofuran () can be prepared from dihydro phthalic anhydride. It is not stable under the reaction conditions but can be trapped with dienophiles. The tetraphenyl derivative showed to be more stable towards protonation.
The reactions of dimethyl 2,5-bis(diazo)-3,4-dikentoadipate with aromatic and heteroaromatic compounds
作者:C.W. Bird、C.K. Wong、D.Y. Wong、F.L.K. Koh
DOI:10.1016/0040-4020(76)87013-5
日期:1976.1
Heating the title compound with benzene provides a mixture of dimethyl 1,3-dihydroxynaphthalene-2,4-dicarboxylate and 3-carbomethoxy-4-hydroxy-5-phenylpyrone which rearranges on melting to the aforementioned naphthalene derivative. The initial substitution reaction appears to proceed through an intermediary pyronyl cation. The scope of this potential ring annelation reaction has been investigated for
1-Trimethylsilyl-3-trimethylsilyloxyisobenzofuran - a potentially useful synthon for linear polycyclics
作者:J.L. Bloomer、M.E. Lankin
DOI:10.1016/s0040-4039(00)78853-8
日期:1992.5
1-Trimethylsilyl-3-trimethylsilyloxyisobenzofuran 7 may be prepared in a simple one-pot procedure from phthalide as a model for the corresponding 4-methoxy derivative 2b, a potentially useful anthracycline synthon.
Chemistry of 2,5-bis(trimethylsiloxy) furans. I: Preparation and diels-alder reactions
作者:Peter Brownbridge、Tak-Hang Chan
DOI:10.1016/s0040-4039(00)78705-3
日期:1980.1
A number of substituted 2,5-bis (trimethylsioloxy) furans were prepared from the corresponding succinic anhydrides, and were found to be reactive dienes for the Diels-Alder reaction with electron - withdrawing dienophiles, giving p-quinones and hydroquinones.