1-(4-amino-phenyl)-3-methyl-tetrahydro-pyrimidin-2-one 、 (rac)-6-methoxy-8-(4-methyl-piperazin-1-yl)-chroman-2-carboxylic acid hydrochloride 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以47%的产率得到6-methoxy-8-(4-methyl-piperazin-1-yl)-N-[4-(3-methyl-2-oxo-tetrahydro-pyrimidin-1-yl)-phenyl]chroman-2-carboxamide