Process for preparing...

Details Process for preparing... Process for preparing...

C - Chemistry, Metallurgy

07

D

C07D 487/04 (2006.01)

Patent

CA 2171003

The invention relates to a process for making DCSA by cyclization of DCM-ATSA with an acid and phosphorous pentachloride to produce DHSA and two isomeric compounds known as HCSA. The resulting compounds from the cyclization are halo-dehydroxylated to produce DCSA.

Procédé de préparation du DCSA par cyclisation du DCM-ATSA à l'aide d'un acide et de pentachlorure de phosphore, ce qui donne du DHSA et deux composés isomères dits HCSA, lesquels sont halo-deshydroxylés pour produire le DCSA.

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