01223nas a2200157   4500008004100000245009100041210006900132260000800201300001800209490000700227520064400234100002500878700002500903700001800928856011900946       2006                        eng d00aSynthesis and utility of new amine/nucleobase addition products of allenylphosphonates0 aSynthesis and utility of new aminenucleobase addition products o  cSEP  a10152–101610 v623 a<p>In the reaction of allenylphosphonates with amines/nucleobases, depending on the amine and the allenylphosphonate, either Z- or E-vinylphosphonate or allylphosphonate as a single isomer with a β-amino functionality was isolated. A simple route to phosphonates with a β-NH2 group is developed by direct reaction with ammonia. In reactions with adenine, three different modes of reaction, with one of them involving an unusual cyclisation, are observed. The utility of (enamino)allyl phosphonate products thus obtained in the synthesis of (enamino)-1,3-butadienes via Horner–Wadsworth–Emmons (HWE) reaction is also demonstrated.</p>1 aSwamy, K., C. Kumara1 aBalaraman, Ekambaram1 aKumar, Satish  uhttps://library.ncl.res.in/content/synthesis-and-utility-new-aminenucleobase-addition-products-allenylphosphonates01386nas 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-double