... 1H-1,2,4-Diazaphospholes via 2-Phosphaallyl Chlorides** By Alfred SchmidpeteP and Angela Willhalm Of the diazaphospholes ... Dr. A. Schmidpeter, Dipl.-Chem ... A. Willhalm lnstitut fur Anorganische Chemie der Universitat Meiserstrasse I, D-8000 Munchen 2 (FRG) I**] Four- and ...