Acknowledgment. We thank the Standard Oil Co. for support of this research and the Lewis Research Center (NASA) for donation of the Finnigan TSQ-45 mass spec- trometer used in this work. ... (13) Masakazu, M.; Kawamatsu, Y.; Kawashima, K.; Shinohara, M.; Tanaka, K.; Tatsuoka, S.; Nakanishi, K. Tetrahedron 1967, 23, 421. (14) Bowie has examined the negative-ion mass spectrum of ethyl benzenesulfonate and observed ions resulting from cleavage between both the ...