81371-00-8Relevant academic research and scientific papers
SYNTHESIS OF DIACIDS, DIALDEHYDES, OR DIAMINES FROM THF-DIOLS
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Page/Page column 10; 11, (2015/05/05)
A simple and elegant chemical process for the synthesis of oxygenated products, such as acids and aldehydes, or other derivative products, such as amines and nitriles, of cyclic bifunctional molecules made from renewable, bio-based sources such as HMF and
SYNTHESIS OF (+)-(3S,6S,10S,13S,17S,20S,24S,27S)-1,8,15,22-TETRAZA-3,6;10,13;17,20;24,27-TETRAEPOXYCYCLOOCTACOSANE. AN ENANTIOMERICALLY PURE TETRAAZACROWN ETHER WITH D4 SYMMETRY AND OF KNOWN ABSOLUTE CONFIGURATION.
Naemura, Koichiro,Hokura, Yukio,Kanda, Yuji,Nakazaki, Masao
, p. 615 - 616 (2007/10/02)
The title azacrown ether, which was synthesized using (+)-(2S,5S)-trans-2,5-bis(aminomethyl)tetrahydrofuran and (+)-(2S,5S)-trans-2,5-bis(hydroxymethyl)tetrahydrofuran as the C2 building blocks, is the first optically active organic molecule of D4 symmetry with known absolute configuration.
Synthesis of Stereoisomeric Crown Ethers Composed of cis- and trans-2,5-Bis(hydroxymethyl)tetrahydrofuran Units and Their Selective Transport of Alkali Metal Cations through Liquid Membranes
Nakazaki, Masao,Naemura, Koichiro,Makimura, Masaru,Matsuda, Atsushi,Kawano, Takaaki,Ohta, Yoshihiro
, p. 2429 - 2435 (2007/10/02)
Optical resolution of trans-tetrahydrofuran-2,5-dicarboxylic acid (13) was carried out via the (+)-2-(1-aminoethyl)naphthalene salt, and conversion of the (+) enantiomer 13 into (+)-2,5-dimethyltetrahydrofuran (17) of known configuration established its 2R,5R configuration.Condensation of (+)- and (-)-trans-ditosylates 15 and cis-ditosylate 20 with pyrocatechol afforded (-)-D2-trans,trans-8, (-)-C1-cis,trans-9, meso-C2h-trans,trans-10, and a mixture of meso-C2h-11 and meso-C2v-cis,cis crown ethers 12.Their selective transport of alkali metal cations is reported.
