1,4,7,10-Tetraazacyclododecane → alpha-Ethyl-2,4,6-triiodo-3-[[1-oxo-6-[(1,4,7,10-tetraazacyclododec-1-yl-acetyl)amino]hexyl]amino]benzenepropanoic acid

Participants

Reaction Steps

According to the procedure described in Example 5, 171.3 g of 1,4,7,10-tetraazacyclododecane (1,00 mol) in 500 ml of DMA are reacted with 190 g of 3-[[6-[(chloroacetyl) amino]-1-oxohexyl]amino]-α-ethyl-2,4,6-triiodobenzenepropanoic acid (prepared according to the procedure described in Example 2) (0,25 mol) in 250 ml of DMA. 155 g of α-ethyl-2,4,6-triiodo-3-[[1-oxo-6-[(1,4,7,10-tetraazacyclododec-1-yl-acetyl)amino]hexyl]amino]benzenepropanoic acid (0.147 mol) are obtained.

Provenance & Evidence