1,1'-Carbonyldiimidazole → HCID 118379530, compound

Participants

Reaction Steps

Prepared in analogous manner to example 3 step 3, using tert-butyl 2-(((Z)-(1-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)-2-(((2R,3S)-2-(11,11-dimethyl-9-oxo-10-oxa-2,5,8-triazadodecyl)-4-oxoazetidin-3-yl)amino)-2-oxoethylidene)amino)oxy)-2-methylpropanoate (135 mg, 0.189 mmol), CDI (46.1 mg, 0.284 mmol), TEA (132 μl, 0.947 mmol) and chloroform (1.9 mL). The crude residue was used as such in the following step. LC/MS: R=1.02 min, m/z=739.4 (M+1) Method 2m_acidic.

Provenance & Evidence