Synthesis of 1,2,4-trisubstituted-1,2,5,6-tetrahydropyridines
摘要:
A novel method for the synthesis of 1,2,4-trisubstituted- or 1,2,3,4-tetrasubstituted-1,2,5,6-tetrahydropyridine is presented. The process was carried out by the bromomethoxylation of 4-substituted-1,2,5,6-tetrahydropyridines 1 with N-bromosuccinimide (NBS) in methanol, dehydrobromination with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), and boron trifluoride etherate (BF(3)-OEt(2))-catalyzed cross coupling of the corresponding enamine with trimethylsilyl-based nucleophiles. Homokainoid analogs were also synthesized via the protocol. (C) 2010 Elsevier Ltd. All rights reserved.
A new method for synthesis of rodocaine (1) is presented. Two key steps were carried out by the N-bromosuccinimide (NBS)-mediated intermolecular addition of known enamine 5 with allyltrimethyl silane in presence of boron trifluoride etherate (BF3/OEt2) and the intramolecular ring-closing metathesis of triene 3. The Diels-Alder cycloaddition of triene 3 with different ethyl propiolates was also studied. (C) 2011 Elsevier Ltd. All rights reserved.
[EN] FUSED BICYCLIC COMPOUNDS AND USE THEREOF AS PI3K INHIBITORS<br/>[FR] COMPOSÉS BICYCLIQUES FUSIONNÉS ET UTILISATIONS DE CEUX-CI COMME INHIBITEURS DE P13K
申请人:MERCK SERONO SA
公开号:WO2009133127A1
公开(公告)日:2009-11-05
The invention relates to compounds of formula (I), for the regulation of phosphoinositides 3-kinases activity and related diseases.
A novel, rapid, and environmentally-friendly protocol for the synthesis of sulfonamides using iodine as catalyst under solvent-free conditions is described. This method involves the oxidative coupling of sulfonyl hydrazides and amines in the presence of catalytic amount of iodine using TBHP as oxidant. This protocol does not require purification techniques such as column chromatography and recrystalization