@article{article_379971, title={Syntheses and spectroscopic investigations of 2-pyridyl(N/N)spirocyclotriphosphazenes}, journal={Journal of the Turkish Chemical Society Section A: Chemistry}, volume={5}, pages={621–634}, year={2018}, DOI={10.18596/jotcsa.379971}, author={Elmas, Gamze}, keywords={2-Pyridyl(N/N)spirocyclotriphosphazenes,Replacement reactions,Spectroscopy}, abstract={<p class="MsoNormal" style="margin-bottom:.0001pt;text-align:justify;line-height:150%;"> <span lang="en-us" style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;" xml:lang="en-us">The Cl substitution reaction of N <sub>3 </sub>P <sub>3 </sub>Cl <sub>6 </sub>
( <b>1 </b>) <b> </b>with </span> <i> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">N </span> </i> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">-(2-pyridyl)-methyl- <i>N </i>’-methylpropane-1,3-diamine
( <b>2 </b>) </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;"> afforded the partly substituted 2-pyridyl(N/N)spirocyclotriphosphazene <b> </b>( <b>3 </b>) <b> </b>(with a yield of 57%) </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;"> </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">in dry THF. </span> <span lang="en-us" style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;" xml:lang="en-us">When the Cl replacement reactions of <b>2 </b> carried
out </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">with
excess pyrrolidine, morpholine and 1,4-dioxa-8-azaspiro[4,5]decane (DASD), </span> <span lang="en-us" style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;" xml:lang="en-us">the corresponding 2-pyridyl(N/N)spirotetrapyrrolidino ( <b>3a </b>),
tetramorpholino ( <b>3b </b>) and tetra( </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">1,4-dioxa-8-azaspiro[4,5]decano) </span> <span lang="en-us" style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;" xml:lang="en-us"> ( <b>3c </b>) </span> <span lang="en-us" style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;" xml:lang="en-us">cyclotriphosphazenes <b> </b>were prepared in moderate
yields. </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">The structures of four cyclotriphosphazene
derivatives were elucidated by the </span> <span lang="en-us" style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;" xml:lang="en-us">elemental
analyses, <b> </b> </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">Fourier transform infrared (FTIR), </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">
heteronuclear </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">mass spectrometry (ESI-MS), </span> <span style="font-size:10pt;line-height:150%;font-family:Verdana, sans-serif;">heteronuclear multiple-bond
correlation (HMBC), single quantum coherence (HSQC), <sup>1 </sup>H, <sup>13 </sup>C,
and <sup>31 </sup>P NMR techniques. </span> </p> <p> </p>}, number={2}, publisher={Turkish Chemical Society}