Process and intermediates for the preparation of aryl substituded pyrido [1,4] benzodiazepines
申请人:A.H. ROBINS COMPANY, INCORPORATED
公开号:EP0157656A2
公开(公告)日:1985-10-09
A process for preparing pyrido[1,4]benzodiazepines having antidepressant activity illustrated by the formula:
wherein Ar is pyridinyl, thienyl or phenyl; R is alkali-metal ion, hydrogen, loweralkyl or an amine or an amine precursor on the end of a hydrocarbon chain involves the condensation of an amino-chloro-pyridine with an aryl(aminophenyl)-methanone, which is accomplished with a strong non-nucleophilic base in stirrable admixture with an inert liquid carrier. Alternatively, condensation is accomplished sequentially using titanium tetrachloride first followed by non-nucleophilic base.
一种制备具有抗抑郁活性的吡啶并[1,4]苯并二氮杂卓的工艺,如式所示:其中 Ar 为吡啶基、噻吩基或苯基;R 为碱金属离子、氢、低级烷基或胺或烃链末端的胺前体,包括氨基氯吡啶与芳基(氨基苯基)-甲酮的缩合,缩合是在与惰性液体载体搅拌混合的情况下用强的非亲核碱完成的。 或者,先用四氯化钛后用非亲核碱依次完成缩合。