J. K. O'HALLORAN

Covalent amination of heteroaromatic compounds

John A. Zoltewicz, Terence M. Oestreich, J. K. O'HALLORAN et al. · The Journal of Organic Chemistry · 1973 · 40 citations

Natural Sciences, Chemistry, Inorganic Chemistry +7

Covalent amination. Substituent effects on the site of addition of ammonia to quaternized pyridines and pyrazines

John A. Zoltewicz, Larry S. Helmick, J. K. O'HALLORAN · The Journal of Organic Chemistry · 1976 · 33 citations

Natural Sciences, Chemistry, Medicinal Chemistry +9

Competitive addition of carbon, sulfur and nitrogen nucleophiles to quaternized heteroaromatic compounds in liquid ammonia

John A. Zoltewicz, Larry S. Helmick, J. K. O'HALLORAN · The Journal of Organic Chemistry · 1976 · 19 citations

Natural Sciences, Chemistry, Catalysis +8

The conversion of tetrazolyl hydrazones into triazolyl azides via tetrazolyl hydrazidic halides

F. L. Scott, D.A. Cronin, J. K. O'HALLORAN · Journal of the Chemical Society C Organic · 1971 · 13 citations

Natural Sciences, Chemistry, Catalysis +8

Synthesis and solvolysis of a new group of reactive halides, the imidazolin-2-ylidenehydrazonyl chlorides; a route to 6,7-dihydro-3-aryl-5H-imidazolo[2,1-c]-s-triazoles

F. L. Scott, J. K. O'HALLORAN, J. B. O'Driscoll et al. · Journal of the Chemical Society Perkin Transactions 1 · 1972 · 11 citations

Natural Sciences, Chemistry, Medicinal Chemistry +9