[EN] PROCESS FOR REGIOSELECTIVE SUBSTITUTION OF TRIFLUOROBENZOATE OR TRIFLUOROBENZONITRILE<br/>[FR] PROCEDE DE SUBSTITUTION REGIOSELECTIVE DU TRIFLUOROBENZOATE OU DU TRIFLUOROBENZONITRILE
申请人:MERCK & CO., INC.
公开号:WO1997031891A1
公开(公告)日:1997-09-04
(EN) The invention provides a process for regioselective substitution of trifluorobenzoate/trifluorobenzonitrile to afford the difluorobenzoate/difluorobenzonitrile in good yields. The resulting difluorobenzoate/difluorobenzonitrile can again be regioselectively substituted with a second nucleophile to give monofluorobenzoate/monofluorobenzonitrile also in good yields. This process is particularly useful for forming key intermediates in the synthesis of oxytocin antagonist compounds.(FR) L'invention porte sur un procédé de substitution régiosélective du trifluorobenzoate/trifluorobenzonitrile permettant d'obtenir du difluorobenzoate/difluorobenzonitrile avec de bons rendements. Le difluorobenzoate/difluorobenzonitrile résultant peut à son tour être substitué régiosélectivement par un deuxième nucléophile pour donner du monofluorobenzoate/monofluorobenzonitrile avec également de bons rendements. Ce procédé est particulièrement utile pour former des intermédiaires clefs pour la synthèse de composés antagonistes de l'oxytocine.
Tocolytic oxytocin receptor antagonists
申请人:Merck & Co., Inc.
公开号:US05756497A1
公开(公告)日:1998-05-26
This invention relates to certain novel benzoxazinone compounds and derivatives thereof, their synthesis, and their use as oxytocin receptor antagonists. One application of these compounds is in the treatment of preterm labor in mammals, especially humans. The ability of the compounds to relax uterine contractions in mammals also makes them useful for treating dysmenorrhea and stopping labor prior to cesarean delivery.