Ti-Catalyzed Ring-Opening Oxidative Amination of Methylenecyclopropanes with Diazenes

Beaumier, E. P.; Ott, A. A.; Wen, X.; Davis-Gilbert, Z. W.; Wheeler, T. A.; Topczewski, J. J.; Goodpaster, J. D.; Tonks, I. A. Chem. Sci. 2020, 11, 7204.

Preprint available on ChemRxiv

Learning Experience Reports Improve Academic Research Safety

Kou, Y.; Peng, X.; Dingwell, C. E.; Reisbick, S. A.; Tonks, I. A.; Sitek, A. A. J. Chem. Educ. 2020ASAP.

Cp2Ti(κ2-tBuNCNtBu): a Complex With an Unusual κ2 Coordination Mode of a Heterocumulene Featuring a Free Carbene

Beaumier, E. P.; Gordon, C. P.; Harkins, R. P.; McGreal, M. E.; Wen, X.; Copéret, C.; Goodpaster, J. D.; Tonks, I. A. J. Am. Chem. Soc. 2020142, 8006.

Earth-Abundant Metals in Catalysis (Editorial)

Ilies, L.; Thomas, S. P.; Tonks, I. A. Asian J. Org. Chem. 20209, 324.

Synthesis and Characterization of Tantalum-Based Early-Late Heterobimetallic Complexes Supported by 2-(diphenylphosphino)pyrrolide Ligands

Dunn, P. L.; Beaumier, E. P.; Tonks, I. A. Polyhedron 2020 181, 114471.

Ta Heterobimetallics
Multicomponent Pyrazole Synthesis from Alkynes, Nitriles, and Ti Imidos via Oxidatively Induced N-N Bond Coupling

Pearce, A. J.; Harkins, R. P.; Reiner, B. R.; Wotal, A. C.; Dunscomb, R. J.; Tonks, I. A. J. Am. Chem. Soc. 2020 142, 4390.

Reactivity of Terminal Imido Complexes of Group 4–6 Metals: Stoichiometric and Catalytic Reactions Involving Cycloaddition with Unsaturated Organic Molecules

Kawakita, K.; Kakiuchi, Y.; Tsurugi, H.; Mashima, K.; Parker, B.; Arnold, J.; Tonks, I. A. Coord. Chem. Rev. 2020, 406, 213118.

Carbodiimide Synthesis via Ti-Catalyzed Nitrene Transfer from Diazenes to Isocyanides

Beaumier, E. P.; McGreal, M. E.; Pancoast, A. R.; Wilson, R. H.; Moore, J. T.; Graziano, B. J.; Goodpaster, J. D.; Tonks, I. A. ACS Catal. 20199, 11753.

Synthesis of Pyridylimido Complexes of Tantalum and Niobium by Reductive Cleavage of the N═N Bond of 2,2′-Azopyridine: Precursors for Early–Late Heterobimetallic Complexes

Kawakita, K.; Kakiuchi, Y.; Beaumier, E. P.; Tonks, I. A.; Tsurugi, H.; Mashima, K. Inorg. Chem. 201958, 15155.

The 4-Electron Cleavage of a N═N Double Bond by a Trimetallic TiNi2 Complex

Dunn, P. L.; Chatterjee, S.; MacMillan, S. N.; Pearce, A. J.; Lancaster, K. M.; Tonks, I. A. Inorg. Chem. 2019, 58, 11762.

Group 4 Diarylmetallocenes as Bespoke Aryne Precursors for Titanium-Catalyzed [2 + 2 + 2] Cycloaddition of Arynes and Alkynes

Reiner, B. R.; Tonks, I. A. Inorg. Chem. 201958, 10508.

Special Issue: Celebrating the Year of the Periodic Table: Emerging Investigators in Inorganic Chemistry

Mechanistic Study of Palladium-Catalyzed Hydroesterificative Copolymerization of Vinyl Benzyl Alcohol and CO

Yee, G. M.; Wang, T.; Hillmyer, M. A.; Tonks, I. A. Organometallics 2019, 38, 1778.

VBA Polymerization
Bis(imido)vanadium(V)-Catalyzed [2+2+1] Coupling of Alkynes and Azobenzenes Giving Multi-Substituted Pyrroles

Kawakita, K.; Beaumier, E. P.; Kakiuchi, Y.; Tsurugi, H.; Tonks, I. A.; Mashima, K. J. Am. Chem. Soc. 2019141, 4194.

Highlighted in: Synfacts 201915, 0475. 10.1055/s-0037-1612514

Vanadium Pyrrole
Organometallic Complexes of Electrophilic Elements for Selective Synthesis (Editorial)

Schafer, L. L.; Hill, M.; Tonks, I. A. Organometallics 201837, 4311.

Modern Applications of Low-Valent Early Transition Metals in Synthesis and Catalysis

Beaumier, E. P.; Pearce, A. J.; See, X. Y.; Tonks, I. A. Nat. Rev. Chem. 20193, 15.

Early Transition Metals
Dative Directing Group Effects in Ti-Catalyzed [2+2+1] Pyrrole Synthesis: Chemo- and Regioselective Alkyne Heterocoupling

Chiu, H.-C.; See, X. Y.; Tonks, I. A. ACS Catalysis 20199, 216.

Highlighted in: Synfacts 201915,  0261. 10.1055/s-0037-1612143

Directing Groups
Let’s Talk About Safety: Open Communication for Safer Laboratories (Editorial)

Miller, A. J. M.; Tonks, I. A. Organometallics 201837, 3225.

Diverse Reactivity of Diazatitanacyclohexenes: Coupling Reactions of 2H-Azirines Mediated by Titanium(II)

Desnoyer, A. N.; See, X. Y.; Tonks, I. A. Organometallics 201837, 4327.

Special Issue: Organometallic Complexes of Electropositive Elements for Selective Synthesis

Ti Azirene
In Situ Catalyst Generation and Benchtop-Compatible Entry Points for Ti(II)/Ti(IV) Redox Catalytic Reactions

Davis-Gilbert, Z. W.; Kawakita, K.; Blechschmidt, D. R.; Tsurugi, H.; Mashima, K.; Tonks, I. A. Organometallics 201837, 4439.

Special Issue: Organometallic Complexes of Electropositive Elements for Selective Synthesis

Benchtop Ti Redox
Bioderived acrylates from alkyl lactates via Pd-catalyzed hydroesterification

Yee, G. M.; Hillmyer, M. A.; Tonks, I. A. ACS Sustainable Chem. Eng. 20186, 9579.

Lactates to Acrylates
Oxidative Nitrene Transfer from Azides to Alkynes via Ti(II)/Ti(IV) Redox Catalysis: Formal [2+2+1] Synthesis of Pyrroles

Pearce, A. J.; See, X. Y.; Tonks, I. A. Chem. Commun. 2018, 54, 6891.

Special Issue: 2018 Emerging Investigators

[2+2+1] with Azides
Mechanism of Ti-Catalyzed Oxidative Nitrene Transfer in [2+2+1] Pyrrole Synthesis from Alkynes and Azobenzene

Davis-Gilbert, Z. W.; Wen, X.; Goodpaster, J. D.; Tonks, I. A. J. Am. Chem. Soc. 2018, 140, 7267.

Ti Redox Mechanism
Trimethylsilyl‐Protected Alkynes as Selective Cross Coupling Partners in Ti‐Catalyzed [2+2+1] Pyrrole Synthesis

Chiu, H.-C.; Tonks, I. A. Angew. Chem. 2018, 57, 6090. 

Highlighted in: Synfacts 201814, 0799. 10.1055/s-0037-1610521

TMS Heterocoupling
Organometallic mechanisms: Measuring up with the early metals (News & Views)

Tonks, I. A. Nature Chemistry 2017, 9, 834-836.

Titanium redox catalysis: insights and applications of an earth-abundant base metal

Davis-Gilbert, Z.W.; Tonks, I. A. Dalton Trans. 2017, 46, 11522.

Ti Redox Catalysis
Generation of Ti(II) alkyne trimerization catalysts in the absence of strong metal reductants

See, X. Y.; Beaumier, E. P.; Davis-Gilbert, Z. W.; Dunn, P. L.; Larsen, J. A.; Pearce, A. J.; Wheeler, T. A.; Tonks, I. A. Organometallics 2017, 36, 1383.

Ti Trimer
Ethylene polymerization catalyzed by bridging Ni/Zn heterobimetallics

Chiu, H.-C.; Koley, A.; Dunn, P. L.; Hue, R. J.; Tonks, I. A. Dalton Trans. 2017, 46, 5513.

Special Issue: "Multimetallic Complexes: Synthesis and Applications"

NiZn Heterobimetallic Polymerization
Ti-catalyzed multicomponent oxidative carboamination of alkynes with alkenes and diazenes

Davis-Gilbert, Z. W.; Yao, L. J.; Tonks, I. A. J. Am. Chem. Soc. 2016138, 14570.

Ti Carboamination
Synthesis and characterization of triply-bonded titanium-iron complexes supported by 2-(diphenylphosphino)pyrrolide ligands

Dunn, P.L.; Carlson, R. K.; Tonks, I. A. Inorg. Chim. Acta 2017, 460, 43.

Special Issue: "Inorganic Chemistry - The Next Generation"

Recipient of the "Best Paper Award for a Young Investigator" 10.1016/j.ica.2017.03.016

Redox non-innocent behavior of a terminal iridium hydrazido(2−) triple bond

Pearce, A. J.; Cassabaum, A. A.; Gast, G. E.; Frontiera, R. R.; Tonks, I. A. Angew. Chem. 2016, 55 13169.

Ir Hydrazide
ZnCl2 capture promotes ethylene polymerization by a salicylaldiminato Ni complex bearing a pendent 2,2′-bipyridine group

Smith, A. J.; Kalkman, E. D.; Gilbert, Z. W.; Tonks, I. A. Organometallics 201635, 2429.

β-oxo-δ-diimine nickel complexes: a comparison of tautomeric active species in ethylene polymerization catalysis

Chiu, H.-C., Pearce, A. J.; Dunn, P. L.; Cramer, C. J.; Tonks, I. A. Organometallics 201635, 2076.

Catalytic formal [2+2+1] synthesis of pyrroles from alkynes and diazenes via TiII/TiIV redox catalysis

Gilbert, Z. W.; Hue, R. J.; Tonks, I. A. Nature Chemistry 20168, 63.

Highlighted in: Synfacts (Synform) 201612, A50. 10.1055/s-0035-1561752

Structure and bonding of group 4-nickel heterobimetallics supported by 2-(diphenylphosphino)pyrrolide ligands

Dunn, P. L.; Carlson, R. K.; Gagliardi, L.; Tonks, I. A. Dalton Trans201645, 9892.

Special Issue: "New Talent: Americas"

Schlenk lines and the vacuum transfer of solvents

Chiu, H.-C.; Morin, T. J.; Tonks, I. A. JoVE Science Education Database. Essentials of Organic ChemistryJ. Vis. Exp. 2016

Ethylene polymerizations using parallel pressure reactors and a kinetic analysis of chain transfer polymerization

Hue, R. J.; Tonks, I. A. J. Vis. Exp. 2015105, e53212.

Analysis of polymeryl chain transfer between group 10 metals and main group alkyls during ethylene polymerization

Hue, R. J.; Cibuzar, M. P.; Tonks, I. A. ACS Catalysis 20144, 4223.

Homo- and heteroleptic group 4 2-(diphenylphosphino)pyrrolide complexes: Synthesis, coordination chemistry and solution state dynamics

Dunn, P. L.; Reath, A. H.; Clouston, L. J.; Young Jr., V. G.; Tonks, I. A. Polyhedron 201484, 111.

Special Issue: In honor of Prof. John Bercaw’s 70th Birthday

Very low pressure Rh-catalyzed hydroformylation of styrene with (S,S,S-BisDiazaphos): regioselectivity inversion and mechanistic insights

Tonks, I. A.; Froese, R.; Landis, C. R. ACS Catalysis 20133, 2905. (Postdoc)

Bis(η5-pentamethylcyclopentadienyl) complexes of molybdenum

Shin, J. H.; Churchill, D. G.; Parkin, G.; Roggan, S.; Jankowski, C.; Limberg, C.; Tonks, I. A.; Bercaw, J. E. Inorganic Syntheses 201436, 12. (Graduate)

Titanium complexes supported by pyridine-bis(phenolate) ligands: active catalysts for intermolecular hydroamination or trimerization of alkynes

Tonks, I. A.; Meier, J. C.; Bercaw, J. E. Organometallics 201332, 3451. (Graduate)

Kinetics and mechanism of indene C-H bond activation by [(COD)IrOH]2.

Ahmed, T.; Tonks, I. A.; Bercaw, J. E. Organometallics 201332, 3322. (Graduate)

Groups 5 and 6 terminal hydrazido(2-) complexes: Nβ substituent effects on LMCT energies and oxidation states

Tonks, I. A.; Durrell, A. C.; Gray, H. B.; Bercaw, J. E. J. Am. Chem. Soc. 2012134, 7301. (Graduate)

Zirconium and titanium propylene polymerization precatalysts supported by a fluxional C2-symmetric bis(anilide)pyridine ligand

Tonks, I. A.; Tofan, D.; Weintrob, E. C.; Agapie, T.; Bercaw, J. E. Organometallics 201231, 1965. (Graduate)

(dme)MCl3NNPh2 (dme = dimethoxyethane; M = Nb, Ta): A versatile synthon for [Ta=NNPh2] hydrazido(2-) complexes

Tonks, I. A.; Bercaw, J. E. Inorg. Chem. 201049, 4648. (Graduate)

Amine, amido, and imido complexes of tantalum supported by a pyridine-linked bis(phenolate) pincer ligand: Ta-N pi-bonding influences pincer ligand geometry

Tonks, I. A.; Henling, L. M.; Day, M. W.; Bercaw, J. E. Inorg. Chem. 200948, 5096. (Graduate)

2-Mercapto-1-t-butylimidazolyl as a bridging ligand: synthesis and structural characterization of nickel and palladium paddlewheel complexes

Pang, K. L.; Figueroa, J. S.; Tonks, I. A.; Sattler, W.; Parkin, G. Inorg. Chim. Acta 2009362, 4609. (Undergraduate)

Dehydrogenation of N-ethyl perhydrocarbazole catalyzed by PCP pincer iridium complexes: evaluation of a homogenous hydrogen storage system.

Wang, Z. H.; Tonks, I.; Belli, J.; Jensen, C. M. J. Organomet. Chem. 2009694, 2854. (Undergraduate)

Fabrication of free-standing metallic pyramidal shells

Xu, Q. B.; Tonks, I.; Fuerstman, M. J.; Love, J. C.; Whitesides, G. M. Nano Letters 20044, 2509. (Undergraduate)