Kawakami, Yukio published the artcileSynthesis and complexation of an optically active aza crown ether, Recommanded Product: 2,2-(1,2-Phenylenebis(oxy))diacetic acid, the publication is Bulletin of the Institute for Chemical Research, Kyoto University (1983), 61(2), 117-19, database is CAplus.
Ethanolamine I was condensed with o-phenylenedioxyacetic acid or its p-nitrophenyl ester to give diamide II, which was cyclized with o-(BrCH2)2C6H4 in the presence of NaH to give aza crown ether III. The cation binding of III with Li, Na, and Mg perchlorates was assessed by CD and NMR spectra in MeCN.
Bulletin of the Institute for Chemical Research, Kyoto University published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Recommanded Product: 2,2-(1,2-Phenylenebis(oxy))diacetic acid.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia