Preparation and complete ¹ H and ¹³C assignment of some pentacyclo[5.4.0.0^2,6.0^3,10.0^5,9]undecane‐8,11‐dione (PCUD) derivatives

Abstract

Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. NMR spectra are fully assigned, revealing some general characteristics not previously reported for this class of compound, which should aid the assignment and prediction of the NMR spectra of new PCUD derivatives.

Batch versus Flow Photochemistry: A Revealing Comparison of Yield and Productivity

“…Entry 6 describes the known36–38 intramolecular cycloaddition of dieneone 12 to caged diketone 13 with a single 36 W UVA lamp in flow. The batch reaction was conducted by using approximately 50 % immersion of the lamp.…”

Trends in NMR Structural Elucidation Of Polycyclic Cages, Namely: Adamantane, Pentacycloundecane and Trishomocubane

“…In addition, HMBC, NOESY, and ROESY techniques are useful in determining the side "arm" with respect to the cage moiety. 48 Kenwright et al, 40 reported a series of compounds, 10a-10g (Figure 3), where the protons in the 2 and 6 positions of the four-membered ring have the highest shift in frequency of all the methine protons in unsubstituted PCU derivatives. However, the chemical shift of position 2 appears de-shielded when position 1 is substituted by an alkyl or methoxy group.…”