Supplementary Figure 6: 1H NMR spectrum for compound 6
From: Preparative scale and convenient synthesis of a water-soluble, deep cavitand
1H-NMR spectrum (25 °C, DMSO‑d6, 600 MHz) of the compound 6.23 The characteristic methine peak and the corresponding atoms are marked with the green arrows. The solid usually contains residual acetone (~ 3% w/w by NMR peak integration) that resists removal under high vacuum, as also observed with the previously reported analogue of 6 with pyridinium feet.
