Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA888163A
Inventor
Irmscher Klaus
Von Werder Fritz
Bork Karl-Heinz
Kraft Hans-Guenther
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck KGaA
Original Assignee
Merck KGaA
Publication date
Application grantedgrantedCritical
Publication of CA888163ApublicationCriticalpatent/CA888163A/en
PROCESS FOR THE PREPARATION OF 21-CHLORO-6,6 9.alpha.-TRIFLUORO-11.beta.,16.alpha.,17.alpha.-TRIHYDROXY-1,4-PREGNADIEN-3,20-DIONE 16,17-KETALS AND SELECTED INTERMEDIATES