methyl ester hydrochloride, and 2-(naphthalen-2-yloxy)acetic acid
were obtained from Sigma-Aldrich; glucono-δ-lactone, 1,4-dioxane,
and lithium hydroxide were purchased from Alfa Aesar; diethyl ether, N-methylmorpholine, sodium hydroxide, and hydrochloric acid
were received from Honeywell; acetonitrile, chloroform, tetrahydrofuran,
and sodium chloride were acquired from Fisher Scientific; hydrogen
chloride (ca 4 mol/L in 1,4-dioxane) was obtained from Tokyo Chemical
Industry; magnesium sulfate, dichloromethane, trifluoroacetic acid,
and isobutyl chloroformate were purchased from VWR International,
Fluorochem, and Thermo Scientific, respectively. All chemicals were
used directly without further treatment. Deionized water was used
throughout this research.
Full synthetic protocols and characterization
data for the two gelators used here are described in the Supporting
Information (