发明公开
EP2181986A1 Process for the preparation of a precursor of montelukast 有权
Verfahren zur Herstellung einesVorläufersvon Montelukast

Process for the preparation of a precursor of montelukast
摘要:
The present invention relates to a process of making a compound of formula (5)

wherein R is a C1-C4 alkyl group and L is a leaving group.
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