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Stable [2+2]‐Cycloadducts of Ketones with Phosphazenes Having Five‐Membered Rings
Author(s) -
Schmidpeter Alfred,
von Criegern Thomas
Publication year - 1978
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.197800551
Subject(s) - ring (chemistry) , chemistry , phosphorus , atom (system on chip) , wittig reaction , medicinal chemistry , stereochemistry , organic chemistry , computer science , embedded system
The formal analogy between the Wittig reaction and the addition of ketones to compounds having PN bonds includes the formation of an intermediate. The four‐membered ring compound (1) is isolable owing to stabilization by the σ 5 ‐phosphorus atom.