Bulletin of the Chemical Society of Japan

Cyclic Acetylenes. X. A Transannular Hypochromism Observed in a Cyclic Diacetylene Containing a Naphthalene Nucleus

T Ando, M Nakagawa

Index: Ando,T.; Nakagawa,M. Bulletin of the Chemical Society of Japan, 1967 , vol. 40, p. 363 - 370

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Citation Number: 10

Abstract

A cyclic diacetylene (XIa) has been synthesized by the oxidative coupling of 1, 5-bis (propargyloxymethyl) naphthalene (X) with a cyclic dimer (XIb) and a cyclic trimer (XIc). The electronic spectra of XIb and XIc have been found to be almost identical with that of naphthalene with respect to the location of the absorption maxima and the intensities. On the other hand, a marked decrease in the absorption intensities has been observed in the ...