2-O-Mono­alkyl isosorbide ethers with C8, C10, C12 and C14 chain lengths

The title compounds, 6-(octyloxy)hexa­hydro­furo[3,2-b]furan-3-ol, C14H26O4, 6-(decyl­oxy)hexa­hydro­furo[3,2-b]furan-3-ol, C16H30O4, 6-(do­decyl­oxy)hexa­hydro­furo[3,2-b]furan-3-ol, C18H34O4, and 6-(tetra­decyl­oxy)hexa­hydro­furo[3,2-b]furan-3-ol, C20H38O4, consist of a polar headgroup (isosorbide) and a lipophilic alkyl chain linked via an ether bridge. Isosorbide is a biobased diol, containing two fused furan rings. One inter­molecular hydrogen bond connects the mol­ecules between the free endo hy­droxy group and the opposing ether oxygen of the V-shaped head group. Thus the mol­ecule layers inter­lock like in a herringbone pattern parallel to the bc plane.