80525-60-6Relevant articles and documents
Synthesis of lipophilic lariat ethers with pendant N-(X)sulfonyl carboxamide groups
Hu, Hui,Bartsch, Richard A.
, p. 557 - 562 (2007/10/03)
Synthetic routes to sixteen lipophilic lariat ether N-(X)sulfonyl carboxamides with X = trifluoromethyl, methyl, phenyl, and p-nitrophenyl are described. For this new family of proton-ionizable lariat ethers in which the acidity can be 'tuned' by X group variation, the ring size is systematically varied from 12-crown-4 to 14-crown-4 to 15-crown-5 to 18-crown-6.
Phase-Transfer-Catalyzed Synthesis of Oligoethylene Glycols and Derivatives
Bartsch, Richard A.,Cason, Victor C.,Czech, Bronislaw P.
, p. 857 - 860 (2007/10/02)
An efficient, two-step synthetic method for the addition of ethyleneoxy units to diols is reported.Reaction of HOROH with Cl(CH2CH2O)nTHP and 50percent aqueous NaOH in the presence of a phase-transfer catalyst gives THP(OCH2CH2)nORO(CH2CH2O)nTHP from which the protecting groups are readily removed to provide H(OCH2CH2)nORO(CH2CH2O)n in good-to-excellent yields.The influence of reactant diol structure upon yield has been determined.