... Department of Organic Chemistry, NSR Center for Molecular Structure, Design and Synthesis, University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands ... SOC. 1952, (11) Brandsma, L. Preparative Acetylenic Chemistry, 2nd ed.; 2873. ... J. Org. Chem., Vol. 58, No. ...