Process for the preparation of...

Details Process for the preparation of... Process for the preparation of...

2007-10-16

2007-10-16

Powers, Fiona T (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S194000, C546S203000

Reexamination Certificate

active

09525894

ABSTRACT:
A process for preparing 10,11-dihydro-5H-dibenzo[a,d]cyclohept-5-enes (e.g. loratadine) by reacting a dibenzozuberone with an aliphatic ketone in the presence of low valent titanium.

REFERENCES:
patent: 6084100 (2000-07-01), Stampa et al.
patent: 6093827 (2000-07-01), Jackson
Honrubia et al., Chem. Pharm. Bull., 45(5), 842-848, 1997.
Cid et al., Tetrahedron, 44(19), 6197-6200, 1988.

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