Bromoacetic Acid → alpha-Ethyl-2,4,6-triiodo-3-[[1-oxo-6-[[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododec-1-ylacetyl]amino]hexyl]amino]benzenepropanoic acid

Participants

Reaction Steps

According to the procedure described in Example 2, 111 g of compound (A) α-ethyl-2,4,6-triiodo-3-[[1-oxo-6-[(1,4,7,10-tetraazacyclododec-1-yl-acetyl)amino]hexyl]amino]benzenepropanoic acid (0.12 mol) are reacted with 67.2 g of bromoacetic acid (0.48 mol) in 600 ml of 80% EtOH. 63 g of α-ethyl-2,4,6-triiodo-3-[[1-oxo-6-[[4,7,10-tris(carboxymethyl)-1,4,7,10-tetraazacyclododec-1-ylacetyl]amino]hexyl]amino]benzenepropanoic acid (0.058 mol) are obtained.

Provenance & Evidence