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Intermolecular [2+2] photocyclization of ethyl 5-oxo-1a,2,5,5a,6,6a-hexahydro-2,6-methano-2aH-indeno-[5,6-b]oxirene-2a-carboxylate

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Abstract

The photodimer, 7, of ethyl 5-oxo-1a,2,5,5a,6,6a-hexahydro-2,6-methano-2aH-indeno-[5,6-b]oxirene-2a-carboxylate has been isolated and structuraally characterized. Triclinic,P −1,a=9.7783(6),b=11.2782(7),c=11.3445(7) Å, α=105.461(9), β=113.3759(10), γ=92.9155(11)o,V=1089.36(12) Å3,R=0.049 for 3557 unique observed reflections. Two independent molecules lying on inversion centers occupy the unit cell. The influence of the orientation of the ester group on the polycyclic skeleton is discussed.

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Authors and Affiliations

  1. Department of Chemistry, University of Toledo, 13606, Toledo, Ohio

    A. Alan Pinkerton & Anthony Martin

  2. Department of Chemistry, University of North Texas, 76203-0068, Denton, Texas

    Alan P. Marchand & Arokiasamy Devasagayaraj

Authors
  1. A. Alan Pinkerton
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  2. Anthony Martin
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  3. Alan P. Marchand
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  4. Arokiasamy Devasagayaraj
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Pinkerton, A.A., Martin, A., Marchand, A.P. et al. Intermolecular [2+2] photocyclization of ethyl 5-oxo-1a,2,5,5a,6,6a-hexahydro-2,6-methano-2aH-indeno-[5,6-b]oxirene-2a-carboxylate. J Chem Crystallogr 27, 701–705 (1997). https://doi.org/10.1007/BF02576549

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