... 14, 211 (1972). W. Verboom, DN Relnhoudt, R. Vlsser and S. Harkema, J. Org. Chem. submitted for publlcatlon. W. Verboom, DN Relnhoudt, S. Harkema and GJ van Hummel, J. Org. Chem. 47, 3339 (1982). Compounds A were prepared by dlalkylatlon of the corresponding anllines with 1,4-dlbromobutane, 1,5-dlbromopentane and czs-1,4-dlchlorobutene, respective- ly, in refluxlng toluene in the presence of ethyldllsopropylamine. ...