本文描述了一种有效的NaNO 2 / I 2介导的Morita-Baylis-Hillman(MBH)乙酸盐单酯转化为3-硝基--5-(芳基/烷基)异恶唑-4-羧酸烷基酯的方法。在一个级联事件,初始迈克尔加成纳米2到MBH醋酸配料其经历我的allylnitro中间2催化的氧化α-C 的硝基甲基亚基h的硝化,接着[3 + 2]环加成,得到标题化合物。这些高度取代的异恶唑通过S N Ar反应和氢解进行结构精制可以得到有用的产品。
The key intermediates 5-benzyl-2-phenylpyrimidin-4(3H)-ones or (E)-5-benzylidene-2-phenyl- 5,6-dihydropyrimidin- 4(3H)-ones were obtained conveniently by cyclization of the acetates of Baylis – Hillman adducts and benzamidine hydrochloride in the presence of sodium ethoxide at room temperature. Chlorination of pyrimidinones with phosphorus oxychloride and subsequent treatment with morpholine and demethylation yielded PI3K inhibitors.
[EN] NOVEL COMPOUNDS USEFUL AS POTENTIAL INSECT ANTIFEEDANT AND A PROCESS FOR THE PREPARATION THEREOF<br/>[FR] NOUVEAUX COMPOSÉS UTILES COMME ANOREXIGÈNE POTENTIEL POUR INSECTES ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ
申请人:COUNCIL SCIENT IND RES
公开号:WO2017109795A1
公开(公告)日:2017-06-29
The present invention relates to novel compounds of general formula A: Particularly, the present invention relates to compounds which are useful as antifeedant against the major agricultural pest Spodoptera litura and thus useful as potential insect antifeedants. Further, the present invention relates to a process for the preparation of novel compounds of general formula A having insect antifeedant activity.
A highly regio- and stereoselective Pd-catalyzed electrocarboxylation of Baylis-Hillman acetates: An interesting switchable regioselectivity based on electrode material
regio- and stereoselective palladium catalyzed electrocarboxylation of Baylis-Hillman acetates. We found an interesting unprecedented electrode material-controlled switchable regioselectivity. When Platinum was taken as cathode, benzylic carboxylation products were found to be the predominant regioisomers (condition A). Under similar reaction conditions when Nickel was taken as cathode, a complete reversal
我们开发了一种新型的区域选择性和立体选择性钯催化 Baylis-Hillman 醋酸盐的电羧化反应。我们发现了一种有趣的、前所未有的电极材料控制的可切换区域选择性。当铂作为阴极时,发现苄基羧化产物是主要的区域异构体(条件 A)。在以镍为阴极的类似反应条件下,观察到区域选择性完全逆转,提供肉桂基羧化产物作为主要的区域异构体,仅具有 (E)-立体化学(条件 B)。我们提出了合理的机制来解释区域选择性的转换,这得到了 TEMPO 实验的进一步支持。