Process for preparing isatins with control of side-product formation
申请人:Wilk Kazimierz Bogdan
公开号:US20060247442A1
公开(公告)日:2006-11-02
Methods and kits for preventing or minimizing the formation of isatin oximes during formation of an isatin from an isonitrosoacetanilide are provided. Also provided are methods and kits for preventing or minimizing the formation of isatin oxime impurities after formation of an isatin from an isonitrosoacetanilide by using a decoy agent in the quenching and/or extraction steps. The isatins can be prepared using a decoy agent and desirably a strong acid. Further provided are methods for preparing isatin oximes.
PROCESS FOR THE SCALABLE SYNTHESIS OF 1, 3, 4, 9-TETRAHYDROPYRANOÝ3, 4-B¨-INDOLE DERIVATIVES
申请人:Wyeth
公开号:EP1786772A1
公开(公告)日:2007-05-23
[EN] PROCESS FOR THE SCALABLE SYNTHESIS OF 1, 3, 4, 9-TETRAHYDROPYRANO[3, 4-B]-INDOLE DERIVATIVES<br/>[FR] PROCEDE DE SYNTHESE EVOLUTIVE DE DERIVES DE 1, 3, 4, 9-TETRAHYDROPYRANO[3, 4-B]-INDOLE
申请人:WYETH CORP
公开号:WO2006031770A1
公开(公告)日:2006-03-23
The invention is directed to a process of synthesizing compouds of formula (VI), wherein R1, R9, R3’, R 4 and Y are as set forth in the specification, and said method is useful for large scale synthesis thereof. The invention is also directed to useful intermediates for synthesizing the compounds of formula (VI) and processes of preparing said intermediates.
[EN] PROCESS FOR PREPARING ISATINS WITH CONTROL OF SIDE-PRODUCT FORMATION<br/>[FR] PROCEDE DE PREPARATION D'ISATINES AVEC FORMATION LIMITEE DE COPRODUITS
申请人:WYETH CORP
公开号:WO2006119104A2
公开(公告)日:2006-11-09
[EN] Methods and kits for preventing or minimizing the formation of isatin oximes during formation of an isatin from an isonitrosoacetanilide are provided. Also provided are methods and kits for preventing or minimizing the formation of isatin oxime impurities after formation of an isatin from an isonitrosoacetanilide by using a decoy agent in the quenching and/or extraction steps. The isatins can be prepared using a decoy agent and desirably a strong acid. Further provided are methods for preparing isatin oximes. [FR] L'invention concerne des procédés et des trousses permettant de prévenir ou de réduire la formation d'oximes d'isatine pendant la formation d'une isatine à partir d'un isonitrosoacétanilide. L'invention concerne aussi des procédés et des trousses permettant de prévenir ou de réduire la formation d'impuretés d'oximes d'isatine après la formation d'une isatine à partir d'un isonitrosoacétanilide, grâce à l'utilisation d'un agent leurre pendant les étapes d'extinction et/ou d'extraction. Les isatines peuvent être préparées à l'aide d'un agent leurre, et de préférence d'un acide fort. L'invention concerne en outre des procédés de préparation d'oximes d'isatine.
Process for the scalable synthesis of 1,3,4,9-tetrahydropyrano[3,4-b]-indole derivatives
申请人:Chew Warren
公开号:US20060058532A1
公开(公告)日:2006-03-16
The invention is directed to a process of synthesizing compounds of formula (VI):
wherein R
1-
R
9
, R
3′
, R
4′
and Y are as set forth in the specification, and said method is useful for large scale synthesis thereof. The invention is also directed to useful intermediates for synthesizing the compounds of formula (VI) and processes of preparing said intermediates.