(41) E. L. Clennan, J. J. Koola, K. A. Oolman, "A Comparison of the Ene Reaction of Singlet Oxygen and Triazolinediones with Alkyl Substituted Tetramethylethylenes." Tetrahedron Lett. 31, 6759-6762(1990). DOI: 10.1016/S0040-4039(00)97164-8
(40) J. Nakayama, Y. Sugihara, K. Terada, E. L. Clennan, "Synthesis and Characterization of 3,4-Di-t-Butylfuran, Pyrrole, and Selenophene." Tetrahedron Lett. 31, 4473-4476(1990). DOI: 10.1016/S0040-4039(00)97652-4
(39) E. L. Clennan, X. Chen, J. J. Koola, "Steric and Electronic Effects on the Conformations and Singlet Oxygen Ene Regiochemistries of Substituted Tetramethylethylenes. The Origin of the Geminal Effect." J. Am. Chem. Soc. 112, 5193-5199(1990). DOI: 10.1021/ja00169a030
(38) E. L. Clennan, L. J. Noe, E. Szneler, T. Wen, "Hydrazines: New Charge-Transfer Physical Quenchers of Singlet Oxygen." J. Am. Chem. Soc. 112, 5080-5085(1990). DOI: 10.1021/ja00169a013
(37) E. L. Clennan, K. Yang, "17O Isotopic Tracer Evidence for the Formation of a Sulfurane Intermediate During Sulfide Photooxidation." J. Am. Chem. Soc. 112, 4044-4046(1990). DOI: 10.1021/ja00166a055
(36) E. L. Clennan, X. Chen, "Temperature, Solvent, and Substituent Effects on the Singlet Oxidations of Allylic Phenyl Sulfoxides, Sulfones, and Sulfides." J. Am. Chem. Soc. 111, 8212-8218(1989). DOI: 10.1021/JA00203a023
(35) E. L. Clennan, L. J. Noe, T. Wen, E. Szneler, "Solvent Effects on the Ability of Amines to Physically Quench Singlet Oxygen as Determined by Time-Resolved Infrared Emission Studies." J. Org. Chem. 54, 3581(1989). DOI: 10.1021/jo00276a016
(34) E. L. Clennan, X. Chen, "The Reactions of an Allylic Sulfide, Sulfoxide, and Sulfone with Singlet Oxygen. The Observations of a Remarkable Diastereoselective Oxidation." J. Am. Chem. Soc. 111, 5787(1989). DOI: 10.1021/ja00197a044
(33) E. L. Clennan, X. Chen, "Geminal Selectivity in Singlet Oxygen Reactions." J. Org. Chem. 53, 3124(1988). DOI: 10.1021/jo00248a044
(32) E. L. Clennan, K. Nagraba, "The Additions of Singlet Oxygen to Alkoxy-Substituted Dienes. The Mechanism of the Singlet Oxygen 1,2-Cycloaddition Reaction." J. Am. Chem. Soc. 110, 4312(1988). DOI: 10.1021/ja00221a034
(31) E. L. Clennan, "Singlet Oxygenations of 1,3-Butadienes." Published in Advances in Oxygenated Processes. Vol. 1, Ed. A. L. Baumstark, JAI. Press, 1988, p85.
(30) E. L. Clennan, K. Nagraba, "The Reactions of Singlet Oxygen with Electron Rich Dienes. The Mechanism of 2 + 2 Cycloaddition." Published in The Role of Oxygen in Chemistry and Biochemistry. Studies in Organic Chemistry. Vol. 33, p. 67, Eds. W. Ando, Y. Moro-oka, Elsevier Science Publishers, Amsterdam, 1988. ISBN: 0-89232-866-5
(29) E. L. Clennan, A. D. Earlywine, "Reactions of Triazolinediones with Alkoxy Substituted 1,3-Butadienes. Rearrangements of 2 + 2 to 4 + 2 Cycloadducts", J. Am. Chem. Soc., 109, 7104 (1987). DOI: 10.1021/ja00257a033
(28) E. L. Clennan, K. Matsuno, "Syn- and Anti-Dioxasequinorbornenes. Singlet Oxidation of Exocyclic s-Cis-1,3-Butadienes" J. Org. Chem., 52, 3483 (1987). DOI: 10.1021/jo00391a070
(27) E. L. Clennan, K. K. Lewis, "The Unexpected Regioselectivity in the Singlet Oxygen Cycloadditions to Electron Rich 1,3-Butadienes" J. Am. Chem. Soc., 109, 2475 (1987). DOI: 10.1021/ja00242a037
(26) E. L. Clennan, K. Nagraba, "Singlet Oxidations of Alkoxy-Substituted Butadienes", Physical Organic Chemistry, Vol 31, p. 357, Elsevier Science Publishers, Amsterdam, 1987. ISSN:0165-3253
(25) E. L. Clennan, K. Nagraba, "The Reactions of Singlet Oxygen with Alkoxy-Substituted Dienes. The Formation of Dioxetanes in the Singlet Oxygenation of s-cis Fixed Dienes ZZ and EZ-4,5-Diethylidene-2,2-Dimethyl-1,3-Dioxolanes", J. Org. Chem., 52, 294 (1987). DOI: 10.1021/jo00378a030
(24) E. L. Clennan, K. K. Lewis, "Nucleophilic Trapping of Intermediates in the Singlet Oxygen Reaction of Isomeric 1,4-Di-t-Butoxy-1,.3-Butadienes", J. Org. Chem., 51, 3721 (1986). DOI: 10.1021/jo00369a037
(23) E. L. Clennan, R. P. L'Esperance, K. K. Lewis, "Additions of Singlet Oxygen to Alkoxy Substituted Butadienes. An Unexpectedly Large s-Cis/s-Trans Ratio in an (E,Z)-Diene or a Kinetic Anomeric Effect?", J. Org. Chem., 51, 1440 (1986). DOI: 10.1021/jo00359a012
(22) E. L. Clennan, R. P. L'Esperance, "Mechanism of Singlet Oxygen Addition to Conjugated Butadienes. Solvent Effects on the Formation of a 1,4-Diradical. The 1,4-Diradical/1,4-Zwitterion Dichotomy", J. Org. Chem., 50, 5424 (1985). DOI: 10.1021/jo00225a097
(21) M. G. Zagorski, D. S. Allan, R. G. Salomon, E. L. Clennan, P. C. Heah, R. P. L'Esperance, "Oxygen-17 Magnetic Resonance Chemical Shifts of Dialkyl Peroxides: Large Conformational Effects", J. Org. Chem., 50, 4484 (1985). DOI: 10.1021/jo00223a014
(20) E. L. Clennan, R. P. L'Esperance, "The Unusual Reactions of Singlet Oxygen with Isomeric 1,4-Di-t-Butoxy-1,3-Butadienes", J. Am. Chem. Soc., 107, 5178 (1985). DOI: 10.1021/ja00304a024
(19) E. L. Clennan, M. E. Mehrsheikh-Mohammadi, "The 17O NMR Spectra of 2-Substituted and 2,5-Disubstituted Furans. The Inapplicability of the Hammett LEFR to Correlate Chemical Shifts", Mag. Res. Chem., 23, 985 (1985). DOI: 10.1002/mrc.1260231120
