L-Tartaric acid → HCID 69592662, compound

Participants

Reaction Steps

A solution of L-tartaric acid (0.75 g, 1 equiv) in 2-propanol (12 ml) was added to a solution of the free base from Example 6 (3.43 g, 1 equiv) in 2-propanol (25 ml) with stirring. The mixture was evaporated to ca. one third volume, diluted with ether, then the solid was filtered off, washed with ether and dried in vacuo; yield 3.87 g. 1H-NMR (DMSO, ca. 60:40 rotamer mixture) δ 0.9–1.1 (6H,m), 2.5–2.8 (4H,m), 3.2–3.4 (6H,m), 3.76 (3H,s), 4.20 (2H,s), 4.39/4.43 (2H,2x s), 4.60/4.67 (2H,2x s), 4.92/5.08 (2H,2x s), 7.1–7.7 (15H,m); MS (APCI+) found (M+1)=687/689; C37H40ClFN6O2S requires 686/688.

Provenance & Evidence