Advances in magnetic resonance, Vol. I: edited by J.S. Waugh. 413 pages, diagrams, 6 × 9 in. New York, Academic Press, 1966. Price, $15.00

Abstract

Proton spin coupling constants for unsubstituted four-membered heterocyclics are unknown, and unravelling of their complex A2B4-type spectra is possible only with the aid of weak double irradiation. Thus, 2:2-d2-oxetane was synthesized and all accessible NMR parameters were obtained from an analysis of the 4-proton band. Geminal coupling constants are in accord with predictions of the Pople and Bothner-By theory, and diagonal coupling constants are smaller than 0·3 Hz.