Boards, Advisory Committees, Professional Organizations


  • PhD Representative, Teaching Commitee, Department of Chemistry, University of Copenhagen (2011 - 2015)
  • Chair, Student Council, Department of Chemistry, University of Copenhagen (2007 - 2010)

Professional Education


  • Doctor of Philosophy, Kjobenhavns Universitet (2015)
  • Master of Science, Kjobenhavns Universitet (2013)

Stanford Advisors


Lab Affiliations


All Publications


  • New Organocatalyst Scaffolds with High Activity in Promoting Hydrazone and Oxime Formation at Neutral pH ORGANIC LETTERS Larsen, D., Pittelkow, M., Karmakar, S., Kool, E. T. 2015; 17 (2): 274-277

    Abstract

    The discovery of two new classes of catalysts for hydrazone and oxime formation in water at neutral pH, namely 2-aminophenols and 2-(aminomethyl)benzimidazoles, is reported. Kinetics studies in aqueous solutions at pH 7.4 revealed rate enhancements up to 7-fold greater than with classic aniline catalysis. 2-(Aminomethyl)benzimidazoles were found to be effective catalysts with otherwise challenging aryl ketone substrates.

    View details for DOI 10.1021/ol503372j

    View details for Web of Science ID 000348331800027

    View details for PubMedID 25545888

  • Fluoride-Bridged {Gd-III M-3(III) (2)} ( M= Cr, Fe, Ga) Molecular Magnetic Refrigerants** ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Pedersen, K. S., Lorusso, G., Morales, J. J., Weyhermueller, T., Piligkos, S., Singh, S. K., Larsen, D., Schau-Magnussen, M., Rajaraman, G., Evangelisti, M., Bendix, J. 2014; 53 (9): 2394-2397

    Abstract

    The reaction of fac-[M(III)F3(Me3tacn)]⋅x H2O with Gd(NO3)3⋅5H2O affords a series of fluoride-bridged, trigonal bipyramidal {Gd(III)3M(III)2} (M = Cr (1), Fe (2), Ga (3)) complexes without signs of concomitant GdF3 formation, thereby demonstrating the applicability even of labile fluoride-complexes as precursors for 3d-4f systems. Molecular geometry enforces weak exchange interactions, which is rationalized computationally. This, in conjunction with a lightweight ligand sphere, gives rise to large magnetic entropy changes of 38.3 J kg(-1)  K(-1) (1) and 33.1 J kg(-1)  K(-1) (2) for the field change 7 T→0 T. Interestingly, the entropy change, and the magnetocaloric effect, are smaller in 2 than in 1 despite the larger spin ground state of the former secured by intramolecular Fe-Gd ferromagnetic interactions. This observation underlines the necessity of controlling not only the ground state but also close-lying excited states for successful design of molecular refrigerants.

    View details for DOI 10.1002/anie.201308240

    View details for Web of Science ID 000331512200009

    View details for PubMedID 24574031