Process for producing 1,3-substituted tetrahydro-1h-thieno...

Details Process for producing 1,3-substituted tetrahydro-1h-thieno... Process for producing 1,3-substituted tetrahydro-1h-thieno...

C - Chemistry, Metallurgy

07

D

260/298.3

C07D 495/04 (2006.01) C07F 7/10 (2006.01) C07F 9/6561 (2006.01)

Patent

CA 2011793

ABSTRACT OF THE DISCLOSURE A process is disclosed for the preparation of 1,3-substituted tetrahydro-1H-thieno-[3,4-d]-imidazol- 2(3H)-on-4-ylidene pentanoic acid esters, which are intermediate products for the production of the pharmaceutically active substances (+)-biotin.

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