1. Part I. and EUR report 4765 f.i.e. 365 (1971).
2. (a) J. Chem. Soc. 5491 (1964).
3. (b) See also: and Mass Spectrometry of Organic Compounds, Holden-Day, Inc, San Francisco, 1967, pp. 640 to 641.
4. The mass spectra of some 3,5-diarylisoxazoles
5. and Mass Spectrometry of Heterocyclic Compounds, Wiley-Interscience, New York, 1971, p. 529.