[EN] PROCESS FOR THE PREPARATION OF 1,3-SUBSTITUTED INDENES AND ARYL-FUSED AZAPOLYCYCLIC COMPOUNDS [FR] PROCEDE DE PREPARATION D'INDENES 1,3-SUBSTITUES ET COMPOSES AZAPOLYCYCLIQUES D'ARYLE FONDUS
Preparation of 1,5-Methano-2,3,4,5- tetrahydro-1H-3-benzazepine via Pd-Catalyzed Cyclization
摘要:
A new approach to prepare 1,5-methano-2,3,4,5-tetrahydro-1H-3-benzanepine (1) is discussed. This strategy utilized a tandem Michael addition and Pd-catalyzed cyclization to afford cyanobenzofulvene acetal 13. This indene intermediate (13) was subjected to hydrogenolysis to provide an amino ester (12) and was cyclized with base to afford lactam 5. The lactam (5) was reduced with borane to afford the desired benzazepine (1).
Process for the preparation of 1,3-substituted indenes and aryl-fused azapolycyclic componunds
申请人:——
公开号:US20030060624A1
公开(公告)日:2003-03-27
The present invention relates to processes for the preparation of any of the intermediate 1,3-substituted indenes of the formulae (Ia), (Ib) and (Ic) or a mixture thereof:
1
wherein R
1
, R
2
, R
3
, R
4
, and R
5
are defined herein. Compounds of formulae (Ia), (Ib) and (IC) or mixtures thereof are useful in the preparation of compounds of formula (II):
2
wherein R
2
, R
3
and R
6
are also defined herein.
zepine (5) from benzonorbornadiene (1) by oxidative cleavage and reductive amination sequences were investigated. Osmium-mediated dihydroxylation of 1 followed by NaIO 4 cleavage, reductive amination and debenzylation provides 5 in 64-73% yield overall in three operations. A tandem ozonolysis-reductive amination procedure gives 5 as the tosylate salt from benzonorbornadiene with no isolation of intermediates
Process for the preparation of 1,3-substituted indenes and aryl-fused azapolycyclic compounds
申请人:Pfizer Inc
公开号:US07186870B2
公开(公告)日:2007-03-06
The present invention relates to processes for the preparation of any of the intermediate 1,3-substituted indenes of the formulae (Ia), (Ib) and (Ic) or a mixture thereof:
wherein R1, R2, R3, R4, and R5 are defined herein. Compounds of formulae (Ia), (Ib) and (Ic) or mixtures thereof are useful in the preparation of compounds of formula (II):
wherein R2, R3 and R6 are also defined herein.
[EN] ARYL FUSED AZAPOLYCYCLIC COMPOUNDS<br/>[FR] COMPOSES AZAPOLYCYCLIQUES A FUSION ARYLE
申请人:PFIZER PROD INC
公开号:WO2001062736A1
公开(公告)日:2001-08-30
This invention is directed to compounds of formula (I) and their pharmaceutically acceptable salts, wherein R?1, R2, and R3¿ are as defined herein; intermediates for the synthesis of such compounds, pharmaceutical compositions containing such compounds; and methods of using such compounds in the treatment of neurological and psychological disorders.
This invention is directed to compounds of the formula (I):
1
and their pharmaceutically acceptable salts, wherein R
1
, R
2
, and R
3
are as defined herein; intermediates for the synthesis of such compounds, pharmaceutical compositions containing such compounds; and methods of using such compounds in the treatment of neurological and psychological disorders.