N-Hydroxyphthalimide → HCID 22633854, compound

Participants

Reaction Steps

N-hydroxyphthalimide (0.7 g, 4.3 mmol) and triphenyl-phosphine (1.1 g, 4.2 mmol) were added to a solution of 11-(4,4′-dimethoxytrityloxy)-3,6,9-trioxaundecanol (2.0 g, 4.0 mmol) in THF (60 mL). Diethylazodicarboxylate (DEAD, 0.7 mL, 3.6 mmol) was added dropwise and the stirring was continued overnight at ambient temperature. The reaction mixture was evaporated to an oil, applied onto a silica gel column, and eluted with a linear gradient from neat CH2Cl2 to a 97:3 (v/v) mixture of CH2Cl2 and MeOH. The purification was repeated to yield 2.1 g (80%) of the title compound.

Provenance & Evidence