Copper(I) Carbenes: The Synthesis of Active Intermediates in Copper-Catalyzed Cyclopropanation B.F.S. thanks the Fonds der Chemischen Industrie for a doctoral fellowship
Angew Chem Int Ed Engl. 2001 Apr 1;40(7):1288-1290.
doi: 10.1002/1521-3773(20010401)40:7<1288::aid-anie1288>3.0.co;2-6.