01386nas a2200193   4500008004100000245013100041210006900172260000800241300001400249490000800263520066300271100002500934700002500959700001700984700002501001700001901026700001801045856012901063       2006                        eng d00aUnusual products in the reactions of phosphorus(III) compounds with N=N, C equivalent to C or conjugated double-bonded systems0 aUnusual products in the reactions of phosphorusIII compounds wit  cNOV  a495–5010 v1183 a<p>The diversity of products in the reaction of diethyl azodicarboxylate (DEAD)/diisopropyl azodicarboxylate (DIAD) and activated acetylenes with PIII compounds bearing oxygen or nitrogen substituents is discussed. New findings that are useful in understanding the nature of intermediates involved in the Mitsunobu reaction are highlighted. X-ray structures of two new compounds (2-t-Bu-4-MeC6H3O)P (μ-N-t-Bu)2P+[(NH-t-Bu)N[(CO2]-i-Pr)(HNCO2-i-Pr)]](Cl-)(2-t-Bu-4-MeC6H3OH)(23)and [CH2(6-t-Bu-4-Me-C6H2O)2P(O)C(CO2Me)C-(CO2Me)CClNC(O)Cl] (33) are also reported. The structure of23 is close to one of the intermediates proposed in the Mitsunobu reaction.</p>1 aSwamy, K., C. Kumara1 aBalaraman, Ekambaram1 aPavan, Phani1 aKumar, N., N. Bhuvan1 aKumar, Praveen1 aKumar, Satish  uhttps://library.ncl.res.in/content/unusual-products-reactions-phosphorusiii-compounds-nn-c-equivalent-c-or-conjugated-double00554nas a2200157   4500008004100000245006300041210006200104260000800166300001600174490000800190100002500198700002500223700002500248700002600273856009700299       2009                        eng d00aMitsunobu and related reactions: advances and applications0 aMitsunobu and related reactions advances and applications  cAPR  a2551–26510 v1091 aSwamy, K., C. Kumara1 aKumar, N., N. Bhuvan1 aBalaraman, Ekambaram1 aKumar, K., V. P. Pava  uhttps://library.ncl.res.in/content/mitsunobu-and-related-reactions-advances-and-applications02410nas a2200193   4500008004100000245021700041210006900258260000800327300001400335490000800349520158300357100002401940700002201964700001901986700002502005700002502030700002302055856013802078       2011                        eng d00aCyclodiphosph(III)azane chemistry – ylides from the reaction of [(RNH)P-N(t-Bu)]2 [R = t-Bu, i-Pr] with dimethyl maleate and chiral ansa-type derivatives from reaction of [ClP-N(t-Bu)]2 with a substituted BINOL0 aCyclodiphosphIIIazane chemistry ylides from the reaction of RNHP  cJUN  a374–3820 v3723 a<p>Use of a simple inorganic ring system with the cyclodiphosph(III)azane skeleton [e.g. [(RNH)P-N(t-Bu)]2 [R = t-Bu (7), i-Pr (8)] to probe some of the intermediates proposed in phosphine mediated organic reactions is highlighted. Thus the reaction of 7–8 with the allenylphosphine oxide Ph2P(O)C(Ph)double bond; length as m-dashCdouble bond; length as m-dashCH2 (9) affords the phosphinimines [(RNH)P(μ-N-t-Bu)2P(double bond; length as m-dashN-R)-C(double bond; length as m-dashCH2)CH(Ph)-P(O)Ph2] [R = t-Bu (10), i-Pr (11)], while a similar reaction of 7–8 with dimethyl maleate (or dimethyl fumarate) affords the ylides [(RNH)P(μ-N-t-Bu)2P(NH-R)double bond; length as m-dashC(CO2Me)-CH2(CO2Me) [R = t-Bu (18), i-Pr (19)]. The implication of such reactions on phosphine mediated organic transformations including Morita–Baylis–Hillman reaction is mentioned. In a rather rare type of situation, an unusually long phosphoryl (Pdouble bond; length as m-dashO) bond [1.538 (5) Å] as revealed the X-ray structure of {(R)-6,6′-(t-Bu)2-1,1′-(C10H5)2-2,2′-O2-}{P(O)(N-t-Bu)2-P(Se)} (27) is rationalized by means of crystallographic disorder in packing after comparing the data with that in the literature and {1,1′-(C10H6)2-2,2′-O2}{P(Se)(N-t-Bu)2-P(Se)} (29). X-ray structures of the new compounds 10–11, 18–19, 27 and 29 are discussed. Compound 10 crystallizes in the chiral space group Pca2(1) with (S)-chirality at the carbon center [–C(double bond; length as m-dashCH2)CH(Ph)-P] suggesting a case of spontaneous resolution through crystallization.</p>1 aSwamy, K.C., Kumara1 aGangadhararao, G.1 aSrinivas, Venu1 aKumar, N., N. Bhuvan1 aBalaraman, Ekambaram1 aChakravarty, Manab  uhttps://library.ncl.res.in/content/cyclodiphosphiiiazane-chemistry-%E2%80%93-ylides-reaction-rnhp-nt-bu2-r-t-bu-i-pr-dimethyl-maleate