Ko, Yeung Y. C. Yeung LamCarrié, RobertMünch, AngelikaBecker, Gerd2010-12-202016-03-312010-12-202016-03-311984341433438http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-57885http://elib.uni-stuttgart.de/handle/11682/1307http://dx.doi.org/10.18419/opus-12901,3-Dipolar cycloadditions of azides, p-chlorobenzonitrile oxide and methyl diazoacetate with 2,2-dimethylprophlidynylphosphine occur regiospecifically yielding cyclic ‘aromatic’ monoadducts: triaza-, oxaza-, and diaza- phospholes and the oxazaphosphole can react further with p-chlorobenzonitrile oxide to give a symmetrical [3.3.0] phosphorus heterocycle.eninfo:eu-repo/semantics/openAccessPhosphorverbindungen , Phosphine540article2011-05-17