%0 Journal Article
%T Regio- and Stereoselective [2+2] Photodimerization of 3-Substituted 2-Alkoxy-2-oxo-2H-1,2-benzoxaphosphorines
%A Rositca D. Nikolova
%A G. N. Vayssilov
%A Nestor Rodios
%A Anka Bojilova
%J Molecules
%D 2002
%I MDPI AG
%R 10.3390/70500420
%X Diethyl 1,2-benzoxaphosphorine-3-carboxylates 5 undergo a regio- and stereoselective [2+2] photodimerization reaction in methanol solution under the action of sunlight, giving in all cases the corresponding anti head-to-tail dimers 6 and 7. Concerning the stereogenic P atom, the photodimerization is also stereoselective, and the centrosymmetric stereoisomer 6 predominates over the non symmetric P-epimer 7.
%K 2-Oxo-2-alkoxy-1
%K 2-benzoxaphosphorines
%K [2+2]photocycloaddition
%K benzoxaphphorine dimers
%U http://www.mdpi.com/1420-3049/7/5/420