Diethyl aluminum chloride → 2-Bromo-5-(5-chloro-1-methyl-6-oxo-1,6-dihydro-pyridin-3-yl)-6-(4-chloro-phenyl)-1-isopropyl-4-oxo-1,4,5,6-tetrahydro-pyrrolo[3,4-b]pyrrole-3-carboxylic acid ethyl ester

Participants

Reaction Steps

The title compound was prepared in analogy to the procedure described for Step H1, but diethylaluminium chloride (1.8M in toluene) was used instead of trimethylaluminium chloride, and 2-bromo-5-[(5-chloro-1-methyl-6-oxo-1,6-dihydro-pyridin-3-ylamino)-(4-chloro-phenyl)-methyl]-1-isopropyl-1H-pyrrole-3,4-dicarboxylic acid diethyl ester (Step BM1) was used instead of 2-[(3-chloro-4-fluoro-phenylamino)-(4-cyano-phenyl)-methyl]-1-isopropyl-1H-pyrrole-3-carboxylic acid ethyl ester to afford the title compound as a beige solid. tR: 1.16 min (HPLC 3); ESI-MS: tR=1.11 min, [M+H]+ 566/568/570 (LC-MS 1); TLC: Rf=0.14 (EtOAc).

Provenance & Evidence