Photochemical syntheses. X. Photodimers of derivatives of naphthalenecarboxylic acids
- 1 January 1976
- journal article
- research article
- Published by CSIRO Publishing in Australian Journal of Chemistry
- Vol. 29 (8) , 1783-1790
- https://doi.org/10.1071/ch9761783
Abstract
Photodimers that are derivatives of the ring system (3) have been obtained from six out of 28 mono- and di-substituted naphthalenes examined. The only dimers obtained are head-to-tail isomers that are formed by bonding between the substituted rings of two molecules of the naphthalene derivative. 2-Naphthoic acid anhydride gives the intramolecnlar adduct (3g). The dimers (3h) and (3i) rearrange below 100� to give (4h) and (4i), respectively. Irradiation of methyl 3-methoxy-2-naphthoate in the presence of pyrene gives a mixture of (3i) and (6).Keywords
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