27. “On the Mechanism of a New Metallacycle Annelation Reaction: Evidence for an Intramolecular Methoxy Group Transfer.” O’Connor, J. M.; Pu, L.; Rheingold, A. L. J. Am. Chem. Soc. 1990, 112, 9663-9665. [DOI: 10.1021/ja00182a049] 

26. “Metallacycle Annelation: Reaction of a Metallacycle alpha-Substituent and a Vinylidene Ligand to give a Metallabicyclolactone Complex.” O’Connor, J. M.; Pu, L.; Chadha, R. K. J. Am. Chem. Soc. 1990, 112, 9627-9628. [DOI: 10.1021/ja00182a026]

25. “Surreptitious Involvement of a Metallacycle Substituent in Metal-Mediated Alkyne Cleavage Chemistry.” O'Connor, J. M.; Pu, L. J. Am. Chem. Soc. 1990, 112, 9013-9015.

24. “Synthesis and Structural Characterization of Bimetallic μ-Malonyl Complexes.” O’Connor, J. M.; Uhrhammer, R.; Chadha, R. K.; Rheingold, A. L. J. Am. Chem. Soc. 1990, 112, 7585-7598.

23. “Carbene Ligand Insertion into a Metallacycle Ring: A Metallacyclopentadiene to Metallacyclobutene Conversion.” O’Connor, J. M.; Pu, L.; Woolard, S.; Chadha, R. K. J. Am. Chem. Soc. 1990, 112, 6731-6732. [DOI: 10.1021/ja00174a054]

22. “Synthesis, Structure, and Reactivity of Metallacycle-Carbene and -Bis(Carbene) Complexes: A New Intramolecular Carbene-Carbene Coupling Process.” O’Connor, J. M.; Pu, L.; Rheingold, A. L. J. Am. Chem. Soc. 1990, 112, 6232-6247. [DOI: 10.1021/ja00173a010]

21. “Synthesis and Structural Characterization of Annelated Carbon Rings Containing a Bridgehead Transition Metal.” O'Connor, J. M.; Pu, L.; Chadha, R. Angew. Chem. 1990, 102, 586; Angew. Chem. Int. Ed. Engl. 1990, 29, 543-545. [DOI: 10.1002/anie.199005431]

20. “Synthesis and Characterization of a Novel Bimetallic μ-Malonyl Complex. The First X-ray Crystal Structure of Alkali Metal Chelation by a Neutral Malonyl Compound.” O’Connor, J. M.; Uhrhammer, R.; Rheingold, A. L.; Staley, D. L. J. Am. Chem. Soc. 1989, 111, 7633-7634.

19. “Selective Oxidation of a Highly Substituted η4-Cyclopentadiene Cobalt Complex: Partitioning between Uncomplexed Diene and Cobalticinium Cation Products.” O'Connor, J. M.; Johnson, J. A. Synlett 1989, 1, 57-59.

18. “The Crystal and Molecular Structure of [P(CH3)(C6H5)3]2{IPd[CC(=O)(OCH3)]4}2.” Rheingold, A. L.; Baldacchini, C. J.; O’Connor, J. M.; Huong, J. Acta Cryst. 1989, C45, 1626-1628.

17. “Oxidative Coupling of cis-Carbene Ligands: Synthesis, Structure, and Reactivity of an Ir(III) Bis(oxacyclopentylidene) Complex.” O’Connor, J. M.; Pu, L.; Rheingold, A. L. J. Am. Chem. Soc. 1989, 111, 4129-4130.

16. “A New Mode of Carbene Reactivity: Coupling with Two Alkynes to Generate Highly Substituted Cyclopentadiene Products.” O'Connor, J. M.; Pu, L.; Uhrhammer, R.; Johnson, J. A.; Rheingold, A. L. J. Am. Chem. Soc. 1989, 111, 1889-1891.

15. “Metal-Mediated Cyclization of Alkynes and Carbenes: A New Route Toward Highly Substituted Cyclopentanoids.” O’Connor, J. M.; Pu, L.; Johnson, J. A.; Uhrhammer, R. in Advances in Metal Carbene Chemistry, U. Schubert, Ed., Kluwer Academic, Dordrecht, Holland, 1989, p. 43-46.

14. “Thermodynamic Control of Stereochemistry in Alkylation of Chiral Transition-Metal beta-Oxoacyl Compounds: Enolization without Epimerization.” O’Connor, J. M.; Uhrhammer, R.; Rheingold, A. L. Organometallics 1988, 7, 2422-2424.

13. “Observation of a Transition Metal Enol Complex and Stereoselective Keto-Enol Tautomerization in Transition Metal Acyl Compounds.” O'Connor, J. M.; Uhrhammer, R. J. Am. Chem. Soc. 1988, 110, 4448-4450.

12. “Nucleophilic Cleavage of the sp3 Carbon-Oxygen Bond in Alkoxycarbene Complexes: Conversion of 2-Oxacyclopentylidene Ligands to Pyridinium-Substituted Acyl Ligands.” O'Connor, J. M.; Pu, L.; Rheingold, A. L. Organometallics 1988, 7, 2060-2062.