Two new methods to form substituted oligoethylene glycols
摘要:
1-allyloxymethyl-2-trityloxyethanol (2) react readily at room temperature with substituted oligoethylene glycols or the ditosylate derivative of an oligoethylene glycol, respectively, to form the extended, ditrityl-protected, substituted oligoethylene glycols in high yields. The trityl groups are easily removed by acidified methanol in CH2Cl2 to give the extended, substituted oligoethylene glycols.