Publication List 1. Baxter, C. S.; Garratt, P. J.; Vollhardt, K. P. C., The 3,4:5,6:9,10- Tribenzobicyclo[6.2.0]decapentaenyl Dianion, J. Am. Chem. Soc. 1969, 91, 7783. 2. Garratt, P. J.; Vollhardt, K. P. C., Benzo[3,4]cyclobuta[1,2-c]thiophen (2-Thianorbiphenylene), Chem. Commun. 1970, 109. 3. Garratt, P. J.; Vollhardt, K. P. C.; Mitchell, R. H., Wittig Reactions of 1,2-Dihydro-1,2- bis(triphenylphosphoranylidene)benzocyclobutene and Benzocyclobutene-1,2-quinone. The Synthesis of Dibenzo[a,c]benzo[3,4]cyclobuta[1,2-f]cyclooctene, J. Chem. Soc. (C) 1970, 2137. 4. Garratt, P. J.; Holmes, A. B.; Sondheimer, F.; Vollhardt, K. P. C., The Synthesis of Benzo[3,4]cyclobuta[1,2-e]dicyclohexeno[b,h]thionin, an Analog of Biphenylene Containing a Thionin Ring, J. Am. Chem. Soc. 1970, 92, 4492. 5. Garratt, P. J.; Vollhardt, K. P. C., 6,11-Methanocyclobutabenzo[1,2-a]-[10]annulene, a Biphenylene-Analog Containing a Carbocyclic 10 π-Electron Ring, Angew. Chem. 1971, 83, 111; Angew. Chem., Int. Ed. Engl. 1971, 10, 125. 6. Garratt, P. J.; Vollhardt, K. P. C., Homophthalaldehyde, Synthesis 1971, 3, 423. 7. Garratt, P. J.; Holmes, A. B.; Sondheimer, F.; Vollhardt, K. P. C., The Synthesis of Mono-trans- dicyclohexeno[b,i]-1,6-dithiacyclodeca-2,4,7,9-tetraene, a Tetra-alkylated 1,6-Dithia[10]annulene, Chem. Commun. 1971, 947. 8. Garratt, P. J.; Vollhardt, K. P. C., Synthesis of Benzo[3,4]cyclobuta[1,2-a]benzo[d]tropylium Cation, a Homobiphenylene Cation, Chem. Commun. 1971, 1143. 9. Garratt, P. J.; Vollhardt, K. P. C., The Synthesis of 6,7-Diphenyl-3-thiabicyclo[3.2.0]heptatriene, a Thienocyclobutadiene, J. Am. Chem. Soc. 1972, 94, 1022. 10. Garratt, P. J.; Vollhardt, K. P. C., Wittig Reactions of 1,2-Benzocyclobutadienequinone. Synthesis of 2-Thianorbiphenylene (Benzo-[3,4]cyclobuta[1,2-c]thiophene), J. Am. Chem. Soc. 1972, 94, 7087. 11. Vollhardt, K. P. C.; Bergman, R. G., 3,6-Dehydrooxepin, a Furocyclobutadiene, J. Am. Chem. Soc. 1972, 94, 8950. 12. Jones, A. J.; Garratt, P. J.; Vollhardt, K. P. C., 13C Shifts in Biphenylene and Analogous Compounds, Angew. Chem. 1973, 85, 260; Angew. Chem., Int. Ed. Engl. 1973, 12, 241. 13. Garratt, P. J.; Vollhardt, K. P. C., Aromatizität; Georg Thieme Verlag: Stuttgart, 1973. 14. Bergman, R. G.; Vollhardt, K. P. C., 3-Oxabicyclo[3,2,0]hepta-1,4-diene, Chem. Commun. 1973, 214. 15. Garratt, P. J.; Holmes, A. B.; Sondheimer, F.; Vollhardt, K. P. C., Wittig Reactions of 1,2- Dihydro-1,2-bis(triphenylphosphoranylidene)benzocyclobutene. Synthesis of All-cis- and Mono- trans-1,2,3,4,6,7,8,9-octahydrodibenzo[b,h]benzo[3,4]cyclobuta-[1,2-e]thionin, Analogues of Biphenylene Containing a Thionin Ring, J. Chem. Soc., Perkin Trans. I 1973, 2253. 16. Vollhardt, K. P. C.; Bergman, R. G., Competition between Sulfur Extrusion and Thermal Synthesis of Thienocyclobutadiene in the Pyrolysis of cis- and trans-1,2-Diethynylthiiranes. Dimerization of the Rearrangement Product to Bisthienocyclooctatetraene, J. Am. Chem. Soc. 1973, 95, 7538. 17. Vollhardt, K. P. C.; Bergman, R. G., A One-Step Synthesis of Benzocyclobutenes Involving Cooligomerization of Linear Mono- and Diacetylenes Catalyzed by η5-Cyclopentadienylcobalt Dicarbonyl, J. Am. Chem. Soc. 1974, 96, 4996. 18. Vollhardt, K. P. C.; Bercaw, J. E.; Bergman, R. G., Isolation of Unstable Bis(η5- cyclopentadienylcobalt) Tricarbonyl from the Irradiation of η5-Cyclopentadienylcobalt Dicarbonyl. Thermal Reactions of this Binuclear Complex Leading to Starting Material and Trinuclear and Tetranuclear Cobalt (I) Complexes, J. Am. Chem. Soc. 1974, 96, 4998. 19. Vollhardt, K. P. C., Bis-Wittig Reactions in the Synthesis of Nonbenzenoid Aromatic Ring Systems, Synthesis 1975, 7, 765. 20. Vollhardt, K. P. C., Cyclobutadienoids, Top. Curr. Chem. 1975, 59, 113. 21. Aalbersberg, W. G. L.; Barkovich, A. J.; Funk, R. L.; Hillard III, R. L.; Vollhardt, K. P. C., Transition Metal Catalyzed Acetylene Cyclizations. 4,5-Bis(trimethylsilyl)benzocyclobutene, a Highly Strained, Versatile Synthetic Intermediate, J. Am. Chem. Soc. 1975, 97, 5600. 22. Vollhardt, K. P. C.; Bercaw, J. E.; Bergman, R. G., Photochemistry of η5- Cyclopentadienylcobalt Dicarbonyl and Thermal Decomposition of Derived Cobalt Cluster Complexes. Isolation of Bis(η5-cyclopentadienylcobalt) Tricarbonyl, Tris(η5-cyclopentadienylcobalt Monocarbonyl) and Tetra(η5-Cyclopentadienylcobalt) Dicarbonyl, J. Organomet. Chem. 1975, 97, 283. 23. Hillard III, R. L.; Vollhardt, K. P. C., Transition Metal Catalyzed Acetylene Cyclizations. A General Synthesis of Indans and Tetralins, Angew. Chem. 1975, 87, 744; Angew. Chem., Int. Ed. Engl. 1975, 14, 712. 24. Brogli, F.; Heilbronner, E.; Wirz, J.; Kloster-Jensen, E.; Bergman, R. G.; Vollhardt, K. P. C.; Ashe, A. J., The Consequences of σ and π Conjugative Interactions in Mono-, Di- and Triacetylenes. A Photoelectron Spectroscopic Investigation, Helv. Chim. Acta 1975, 58, 2620. 25. Saward, C. J.; Vollhardt, K. P. C., 1,2-Cyclopropa-4,5-cyclobutabenzene, a Novel Strained Benzene Derivative, Tetrahedron Lett. 1975, 4539. 26. Funk, R. L.; Vollhardt, K. P. C., 10,11-Dihydrocyclobuta[b]triphenylene and 1,2,5,6,9,10- Hexahydrotriscyclobuta[b,h,n]triphenylene, Angew. Chem. 1976, 88, 63; Angew. Chem., Int. Ed. Engl. 1976, 15, 53. 27. Barkovich, A. J.; Vollhardt, K. P. C., 1,5,9-Cyclododecatriyne. Synthesis and Conversion to Intermediate 1,2:3,4:5,6-Tricyclobutabenzene, J. Am. Chem. Soc. 1976, 98, 2667. 28. Hillard III, R. L.; Vollhardt, K. P. C., Cyclobuta[1,2-d]benzyne. Generation, Trapping, and Dimerization to 2,3:6,7-Dicyclobutabiphenylene, J. Am. Chem. Soc. 1976, 98, 3579. 29. Funk, R. L.; Vollhardt, K. P. C., Hexa-1,5-diyn-3-ol Ethers as Tetramethynyl Synthons in Cobalt-catalysed Acetylene Co-oligomerisations; A One Step Synthesis of 2,3,6,7- Tetrakistrimethylsilylnaphthalene, J. Chem. Soc., Chem. Commun. 1976, 833. 30. Funk, R. L.; Vollhardt, K. P. C., In Situ Generation and Intramolecular Trapping of o-Xylylenes by Cobalt-Catalyzed Acetylene Cooligomerizations. A One-Step Synthesis of Polycycles, J. Am. Chem. Soc. 1976, 98, 6755. 31. Vollhardt, K. P. C., Transition-Metal-Catalyzed Acetylene Cyclizations in Organic Synthesis, Acc. Chem. Res. 1977, 10, 1. 32. Vollhardt, K. P. C.; Lee, L. S., 1,2-Bis(trimethylsilyl)benzocyclobutadiene, a Paratropic 8 π- Electron System, J. Am. Chem. Soc. 1977, 99, 2010. 33. Aalbersberg, W. G. L.; Vollhardt, K. P. C., Retention of Stereochemistry in the Extrusion of Sulfur Monoxide from Thiirane Oxides. Synthesis and Thermal Decomposition of cis-and trans- Dideuteriothiirane Oxide, J. Am. Chem. Soc. 1977, 99, 2792. 34. Hillard III, R. L.; Vollhardt, K. P. C., Substituted Benzocyclobutenes, Indans, and Tetralins via Cobalt-Catalyzed Cooligomerization of α,ω-Diynes with Substituted Acetylenes. Formation and Synthetic Utility of Trimethylsilylated Benzocycloalkenes, J. Am. Chem. Soc. 1977, 99, 4058. 35. Hillard III, R. L.; Vollhardt, K. P. C., 3,4-Bis(trimethylsilyl)benzocyclobutene - Synthesis by Acetylene Cotrimerization and Conversion into 1,2-Dihydrocyclobuta[c]benzyne, Angew. Chem. 1977, 89, 413; Angew. Chem., Int. Ed. Engl. 1977, 16, 399. 36. Naiman, A.; Vollhardt, K. P. C., A Cobalt-Catalyzed One-Step Synthesis of Annulated Pyridines, Angew. Chem. 1977, 89, 758; Angew. Chem., Int. Ed. Engl. 1977, 16, 708. 37. Funk, R. L.; Vollhardt, K. P. C., A Cobalt-Catalyzed Steroid Synthesis, J. Am. Chem. Soc. 1977, 99, 5483. 38. Vollhardt, K. P. C., Cobaltkatalysierte Acetylen-Cyclisierungen, Nachr. Chem. Tech. 1977, 25, 584. 39. Barkovich, A. J.; Strauss, E. S.; Vollhardt, K. P. C., Hexaradialene, J. Am. Chem. Soc. 1977, 99, 8321. 40. Fritch, J. R.; Vollhardt, K. P. C., Bicyclobutadienylene (tricyclo-[4.2.0.02,5]octa-1,2,5,7- tetraene)-η5-cyclopentadienylcobalt. A Possible Intermediate in the Remarkable Gas Phase Rearrangement of 1,2-Diethynyl-η4-cyclobutadiene-η5-cyclopentadienylcobalt, J. Am. Chem. Soc. 1978, 100, 3643. 41. Vollhardt, K. P. C., Transition Metal Catalyzed Acetylene Cooligomerizations for the Synthesis of Complex Molecules, The Strem Chemiker 1978, 6(2), 1. 42. Perkins, P.; Vollhardt, K. P. C., 1,2,8,9-Tetrahydrodicyclobuta[b,g]phenanthrene and 1,2,7,8- Tetrahydrodicyclobuta[b,h]phenanthrene, Potentially Carcinogenic Activated Hydrocarbons, Angew. Chem. 1978, 90, 643; Angew. Chem., Int. Ed. Engl. 1978, 17, 615. 43. Fritch, J. R.; Vollhardt, K. P. C., Cyclobutadiene-Metal Complexes as Potential Intermediates in Alkyne Metathesis: Flash Vacuum Pyrolysis of Substituted η4-Cyclobutadiene-η5- cyclopentadienylcobalt Complexes, Angew. Chem. 1979, 91, 439; Angew. Chem., Int. Ed. Engl. 1979, 18, 409. 44. Funk, R. L.; Vollhardt, K. P. C., The Cobalt Way to dl-Estrone, a Highly Regiospecific Functionalization of 2,3-Bis(trimethylsilyl)estratriene-17-one, J. Am. Chem. Soc. 1979, 101, 215. 45. Duclos, R. I.; Vollhardt, K. P. C.; Yee, L. S., η4-Benzocyclobutadiene-η5- cyclopentadienylcobalt, A New "Aromatic" Sandwich Complex, J. Organomet. Chem. 1979, 174, 109. 46. Fritch, J. R.; Vollhardt, K. P. C.; Thompson, M. R.; Day, V. W., Apparent Concurrent Acetylene-Vinylidenecarbene Rearrangements, Silyl-Acetylide Metathesis, and Alkyne Cleavage in the Interaction of Bis(trimethylsilyl)acetylene with (η5-C5H5)Co(CO)2 Crystal and Molecular Structure of a Novel Biscarbyne Complex: [3η1-CSi(CH3)3][3η1-C3Si(CH3)3][(η5-C5H5)Co]3, J. Am. Chem. Soc. 1979, 101, 2768. 47. Müller, C.; Schweig, A.; Thiel, W.; Grahn, W.; Vollhardt, K. P. C.; Bergman, R. G., Photoelectron Spectra of 2,5-Dehydrotropylidene, 3,6-Dehydrooxepin, and Fulvenallene, J. Am. Chem. Soc. 1979, 101, 5579. 48. Aalbersberg, W. G. L.; Vollhardt, K. P. C., Intramolecular Cycloadditions of Bis-o-Xylylenes. An Extremely Short Route to [2.2.2]Cyclophanes, Tetrahedron Lett. 1979, 1939. 49. Vollhardt, K. P. C., Anwendungen von Übergangsmetallen in der Organischen Synthese: Faszinierende Neuartige Synthesewege in der Konstruktion Komplexer Moleküle, Chem. Ztg. 1979, 103, 309.