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Ylidylphosphanes and ‐diphosphanes
Author(s) -
Breitsameter Florian,
Schmidpeter Alfred,
Schier Annette
Publication year - 1998
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199803)1998:3<381::aid-ejic381>3.0.co;2-l
Subject(s) - chemistry , phosphonium , ylide , moiety , phosphonium salt , protonation , salt (chemistry) , derivative (finance) , medicinal chemistry , stereochemistry , organic chemistry , ion , financial economics , economics
Chlorophosphanyl and dichlorophosphanyl alkylidene‐ and benzylidenephosphoranes 6 and 8 are converted by reaction with LiAlH 4 to the respective phosphanes 7 and 9 . The former can be isolated, but decompose on heating or on protonation to give the ylidyl diphosphane 11 and the phosphonium ylide or phosphonium salt, respectively. The final products are the cyclooligophosphanes 15 − 17 . Only the C ‐ tert ‐butyl derivative 7c is stable in both regards. The conformation of the RPH group in 7 as compared to that of the RPCl group in 6 clearly reflects their different interaction with the ylide moiety.