3 research outputs found
<span style="font-size:11.0pt;font-family: "Times New Roman";mso-fareast-font-family:"Times New Roman";mso-bidi-font-family: Mangal;mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language: HI" lang="EN-GB">A general synthetic approach to <i>para</i>-cyclophanes <i>via</i> ring-closing metathesis</span>
1483-1494A new methodology for the synthesis para-cyclophanes and longithorone
C frameworks has
been demonstrated via alkylation, ceric ammonium nitrate (CAN) oxidation and ring-closing metathesis as key steps.
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Diversity-Oriented Approach to Cyclophanes via Fischer Indolization and Ring-Closing Metathesis: Substrate-Controlled Stereochemical Outcome in RCM
Here, we report a new and diversity-oriented
approach to macrocyclic
cyclophanes by a Grignard reaction, followed by Fischer indolization
and ring-closing metathesis (RCM) as key steps. The configuration
of the double bond formed during the RCM depends upon the order of
synthetic sequence used. Fischer indolization followed by RCM delivers
the cis isomer, whereas RCM followed by Fischer indolization gives
the trans isomer
Two directional approach to spirocycles containing bicyclo[2.2.2]octane system <em>via</em> a [2+2+2] co-trimerization and Diels-Alder reaction
1231-1236A simple and atom economic/step economic route for the synthesis of bis-armed spirocycles including bis-armed spirosulfone derivative containing bicyclo[2.2.2]octane ring system by utilizing a MW assisted Mo(CO)6 catalyzed two-directional [2+2+2] co-trimerization and the [4+2] cycloaddition reaction as key steps, is reported