The phosphonate-phosphate rearrangement is an isomerisation of α-hydroxyphosphonates bearing electron-withdrawing substituents at the α-carbon atom. We studied the stereochemical course of this rearrangement with respect to phosphorus. A set of four diastereomeric α-hydroxyphosphonates was prepared by a Pudovik reaction from two diastereomeric cyclic phosphites. The hydroxyphosphonates were sep...

The chiral bicyclic lactam (2) derived from levulinic acid and (S)-valinol is sequentially alkylated and then cleaved to 2,2-dialkyl levulinaldehyde (5) which is cyclized to the title products (2) in > 99% ee.

In the title compound, C(4)H(12)N(+)·H(2)PO(3) (-), the components are linked by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, resulting in a two-dimensional framework.

The structure of cerium(IV) bis-(phosphite), Ce(HPO3)2, has been solved by single-crystal X-ray diffraction and has trigonal (P-3m1) symmetry. The cerium(IV) cation exhibits site symmetry -3m. and is octa-hedrally coordinated by O atoms of the phosphite ligands (point group symmetry 3m.). The highly symmetrical compound has a layered structure parallel to the ab plane, and is closely related to...

5-Amino-2,3-dihydrophthalazine-1,4-dione (Luminol 1) reacted with some organophosphorus reagents such as phosphonium ylides, trialkyl phosphites, and tris(dialkylamino)phosphines to afford the corresponding olefinic products 5a-e, alkoxy-, dialkylamino derivatives of Luminol 6a-e. 4-Thioxo-3,4-dihydrophthalazin-1(2H)-one derivative 7 was synthesized from reaction (1) thiating Lawesson Japanese ...

Two molar amounts of arynes were found to insert into a Sn-Sn bond of a distannane in the presence of a sub-stoichiometric amount of a palladium-phosphite complex, affording straightforwardly 2,2'-distannylbiaryls.