Page 1. Mar-Apr 1984 Application of the Okahara Cyclization to the Preparation of 341 Crown Ethers with Aromatic Units B. Czech, A. Czech and RA Bartsch"' Department of Chemistry, Texas Tech University ... [7] Y. Nakatsuji, T. Mizuno and M. Okahara, J. Heterocyclic Chem., 19 ...