59609-05-1Relevant academic research and scientific papers
Interaction of 2-diethylamino-5,5-dimethyl-1,3,2-dioxaphosphorinane with ortho-hydroxyphenols
Nifantiev, Edward E.,Maslennikova, Vera I.,Guzeeva, Tatyana V.,Habicher, Wolf D.,Bauer, Ingmar,Lyssenko, Konstantin A.,Antipin, Mikhail Yu.
, p. 53 - 54 (2005)
The interaction of 2-diethylamido-5,5-dimethyl-1,3,2-dioxaphosphorinane with pyrocatechol, pyrogallol or pyrogallolarene results in the formation of 1,3-bis(5',5'-dimethyl-1',3',2'-dioxaphosphorinanoxy)-2,2-dimethylpropane; in the case of pyrogallolarene, the second product is a hemicarceplex whose calixarene cups are linked by two phosphoneopentylene bridges.
NOVEL HIGH-YIELD TRANSESTERIFICATION AND TRANSAMINATION ROUTES TO P(OCH2)3CCH3 AND P3CCH3, RESPECTIVELY
Volcko, E. J.,Verkade, J. G.
, p. 111 - 118 (2007/10/02)
High yields (93-96percent) in a one-step syntheses of CH3C(CH2OP(o-O2C6H4))3 (3), (4) and (5) are reported.Compounds 4 and 5 at 100-110o give P(OCH2)3CCH3 (2) and P(N(CH3)CH2)3CCH3 (7) in 97 and 96percent yield, respectively, plus the diphosphite (CH3)2C(CH2O)2POCH2C(CH3)2CH2OP(OCH2)2C(CH3)2 (8).Compound 8 was also characterized as its dithiophosphate derivative.Experiments designed to synthesize the adamantane-like P(OCH)3(CH2)3 (9) and P(CH2O)3P (10) in an analogous manner met with only partial success.The tris-phosphate analogue of 4 was also synthesized but it did not thermolyze to OP(OCH2)3CCH3 under the conditions used for 4 and 5 even after prolonged heating.
EVIDENCE IN SUPPORT OF TETRAOXASPIROPHOSPHORANE INTERMEDIATES WITH A SIX-MEMBERED RING AND A P-H BOND IN INTRAMOLECULAR TRANSESTERIFICATION REACTIONS
Lier, Johan J. C. Van,Hermans, Rob J. M.,Buck, Henk M.
, p. 173 - 188 (2007/10/02)
Preparation of tetraoxaspirophosphorane 5 via two possible routes, starting from the isomeric P(V) precursors 10 and 11 results in identical 31P NMR spectra indicative of various P(III) compounds.By analysis of the products and application of low-temperature 31P NMR techniques it is shown that the phosphorane 5 is involved as an intermediate in the intramolecular transesterification 10 ->//- 28 which rules out spirophosphorane 7.These results are rationalized on the basis of orientation effects and Pearson's HASB theory.
