通过不同取代的2-氨基苯硫醇和2-溴-(2的一步反应,前所未有地形成11 H-苯并[5,6][1,4]噻嗪并[3,4- a ]异吲哚-11-酮已经研究了在回流条件下在新鲜干燥的乙醇中的((3-取代的苯基) -1H-茚-1,3( 2H )-二酮。这种独特的转化可能是通过最初的亲核取代、随后的开环和随后的分子内环化发生的。通过 FTIR、 1 H NMR、 13 C NMR、HRMS 和 X 射线晶体分析确定了所有合成的苯并[1,4]噻嗪异吲哚啉酮的结构。这种方法简单方便,具有原子经济性高、反应时间短和操作简单等优点。
通过不同取代的2-氨基苯硫醇和2-溴-(2的一步反应,前所未有地形成11 H-苯并[5,6][1,4]噻嗪并[3,4- a ]异吲哚-11-酮已经研究了在回流条件下在新鲜干燥的乙醇中的((3-取代的苯基) -1H-茚-1,3( 2H )-二酮。这种独特的转化可能是通过最初的亲核取代、随后的开环和随后的分子内环化发生的。通过 FTIR、 1 H NMR、 13 C NMR、HRMS 和 X 射线晶体分析确定了所有合成的苯并[1,4]噻嗪异吲哚啉酮的结构。这种方法简单方便,具有原子经济性高、反应时间短和操作简单等优点。
[EN] INDANONE AND INDANDIONE DERIVATIVES AND HETEROCYCLIC ANALOGS<br/>[FR] DÉRIVÉS D'INDANONE ET D'INDANEDIONE ET ANALOGUES HÉTÉROCYCLIQUES
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2013068785A1
公开(公告)日:2013-05-16
The invention relates to indanone/indandione derivatives and heterocyclic analogs of Formula (I) wherein Ar1, A, B, L1, Y, Z, and (R1)n n are as described in the description; to pharmaceutically acceptable salts thereof, and to the use of such compounds as medicaments, especially as NPS receptor antagonists.
A straightforward and feasible palladium-catalyzed direct α-arylation of indane-1,3-dione to 2-substituted aryl/heteroaryl indene-1,3-diones has been disclosed for the first time. Optimization of reaction conditions identified tBu-XPhos as a preferred ligand for the bis(acetonitrile)dichloropalladium(II) catalyst. A broad spectrum of aryl iodides and aryl triflates containing electron-donating, electron-withdrawing
allowing selective access to tertiary alkylated ketones and alkenes. The present approach features commercially available starting materials, broad substrate scope, general functional-group (including halogen, ester, nitrile, thioether) tolerance. Furthermore, we proposed plausible pathways to rationalize the divergent selectivity through preliminary mechanism study.
Novel axiallychiralbiphenyl diphosphine ligands Enm-BridgePhos, bearing an ether chain bridge at the 5,5′-position of the biphenyl backbone, have been developed and successfully applied in the Rh-catalyzed enantioselective desymmetric hydrogenation of α-acetamido-1,3-indanediones, providing chiral α-acetamido-β-hydroxybenzocyclic pentones in high yields (up to 97%) and with excellent enantioselectivities
新型轴向手性联苯二膦配体E n m -BridgePhos,在联苯主链的5,5′-位上带有醚链桥,已被开发并成功应用于Rh催化的α-acetamido-1的对映选择性不对称氢化反应,3-茚满二酮,以高产率(高达 97%)提供手性 α-乙酰氨基-β-羟基苯并环戊酮,并具有优异的对映选择性(高达 99% ee)。该反应可以在克级规模上进行,相应的产物可作为合成手性螺苄基异喹啉生物碱类似物的重要中间体。晶体结构分析和DFT计算均表明E nm -BridgePhos-Rh配合物的大二面角与优异的对映选择性密切相关。
CuBr-mediated synthesis of 1,4-naphthoquinones <i>via</i> ring expansion of 2-aryl-1,3-indandiones
direct insertion of alkenes into unstrained ring 2-aryl-1,3-indandiones is reported, which provides a one-carbon ring expansion strategy for the synthesis of 1,4-naphthoquinones. Entirely differing from the existing reports, the alkenes herein behave as C1 units to participate in annulation reactions. This transformation provides a facile route to access a class of highly functionalized 1,4-naphthoquinones