W. Kliegel und J. Graurnann Liebigs Ann. Chem. 1983, 950- 961 ... Diphenylborchelate von a-(Dialky1amino)carbonsauren und deren N-Oxiden ... Diphenylboron Chelates of a-(Dialky1amino)carboxylic Acids and their N-Oxides a-(Dialky1amino)carboxylic acids and their N-oxides react with oxybis(dipheny1borane) or similar diphenylborane derivatives to give five- or six-membered diphenylboron chelate rings, respectively, the structure of which is ...