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Abstract
Pure E-isomer overcrowded organometallic fulgide 1 was obtained by using successive Stobbe condensations between ketones and succinate diester. Upon irradiation with UV light at (366 nm) it did not cyclise photochemically to the 1,8a-dihydronaphthalene derivative (1,8a-DHN) 8. The structure of 7 was confirmed by X-ray crystallographic analysis.
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References
- BLESSING, R.H. 1995. An empirical correction for absorption anisotropy. Acta Crystallographica. A51: 33-38.
- HART, R.J. and HELLER, H.G. 1972. Overcrowded Molecules. Part VII. Thermal and Photochemical Reactions of Photochromic (E)- and (Z)-Benzylidene(diphenylmethylene)succinic Anhydrides and Imides. Journal of the Chemical Society, Perkin Transactions, 1: 1321-1324.
- HELLER, H.G. 1978. The development of photochromic compounds for use in optical information stores. Chemistry and Industry, 18 March. 193-196.
- LIANG, Y., DVORNIKOV, A.S. and RENTZEPIS, P.M. 2001. Photochemistry of photochromic 2-indolylfulgides with substituents at the 1’-position of the indolylmethylene moiety. Journal of Photochemistry and Photobiology A: Chemistry, 146( 1): 83-93 (11).
- McCABE, R.W., PARRY, D.E. and SABERI, S.P. 1993. Organometallic Fulgides. Part 1. Synthesis and Photochemistry of Ferrocenyl Fulgides [Ferrocenylethylidene (isopropylidene)succinic Anhydrides]. Journal of the Chemical Society, Perkin Transactions, 1: 1023-1029.
- SHELDRICK, G.M., 1996. SADABS ‘Siemens Area Detector Absorption Correction’ University of Göِttingen: Gِöttingen, Germany.
- SHELDRICK, G.M., 1994. SHELXTL/PC. Version 5.03. Siemens Analytical X-ray Instruments Inc., Madison, Wisconsin, USA.
- SHELDRICK, G.M., 1993. Shelxl93 Program for the Refinement of Crystal Structures. University of Göِttingen, Germany.
- SHELDRICK, G.M., 1990. Phase annealing in SHELX-90: direct methods for larger structures. Acta Crystallographica. A46: 467-473.
- YOKOYAMA, Y., 2000. Fulgides for memories and switches. Chem. Rev. 100(5): 1717-1739.
References
BLESSING, R.H. 1995. An empirical correction for absorption anisotropy. Acta Crystallographica. A51: 33-38.
HART, R.J. and HELLER, H.G. 1972. Overcrowded Molecules. Part VII. Thermal and Photochemical Reactions of Photochromic (E)- and (Z)-Benzylidene(diphenylmethylene)succinic Anhydrides and Imides. Journal of the Chemical Society, Perkin Transactions, 1: 1321-1324.
HELLER, H.G. 1978. The development of photochromic compounds for use in optical information stores. Chemistry and Industry, 18 March. 193-196.
LIANG, Y., DVORNIKOV, A.S. and RENTZEPIS, P.M. 2001. Photochemistry of photochromic 2-indolylfulgides with substituents at the 1’-position of the indolylmethylene moiety. Journal of Photochemistry and Photobiology A: Chemistry, 146( 1): 83-93 (11).
McCABE, R.W., PARRY, D.E. and SABERI, S.P. 1993. Organometallic Fulgides. Part 1. Synthesis and Photochemistry of Ferrocenyl Fulgides [Ferrocenylethylidene (isopropylidene)succinic Anhydrides]. Journal of the Chemical Society, Perkin Transactions, 1: 1023-1029.
SHELDRICK, G.M., 1996. SADABS ‘Siemens Area Detector Absorption Correction’ University of Göِttingen: Gِöttingen, Germany.
SHELDRICK, G.M., 1994. SHELXTL/PC. Version 5.03. Siemens Analytical X-ray Instruments Inc., Madison, Wisconsin, USA.
SHELDRICK, G.M., 1993. Shelxl93 Program for the Refinement of Crystal Structures. University of Göِttingen, Germany.
SHELDRICK, G.M., 1990. Phase annealing in SHELX-90: direct methods for larger structures. Acta Crystallographica. A46: 467-473.
YOKOYAMA, Y., 2000. Fulgides for memories and switches. Chem. Rev. 100(5): 1717-1739.