All green in one medium: FeSO4⋅7 H2O in combination with pyridine‐2‐carboxylic acid and H2O2 in methanol can efficiently catalyze the formation of arylaldehyde dimethyl acetals from the corresponding styrenederivatives.
在一个介质中所有绿色:的FeSO 4 ⋅ 7 H 2 ö与吡啶-2-羧酸和H组合2 ö 2在甲醇中的能有效地催化的芳醛二甲基缩醛的从相应的苯乙烯衍生物的形成。
Asymmetric α-Hydroxylation of a Lactone with Vinylogous Pyridone by Using a Guanidine-Urea Bifunctional Organocatalyst: Catalytic Enantioselective Synthesis of a Key Intermediate for (20<i>S</i>)-Camptothecin Analogues
We have developed a catalytic asymmetricsynthesis of (S)‐4‐ethyl‐6,6‐(ethylenedioxy)‐7,8‐dihydro‐4‐hydroxy‐1H‐pyrano[3,4‐f]indolizine‐3,10(4H)dione (5 a), a synthetic intermediate for (20S)‐camptothecin analogues. A key step in this synthesis is an asymmetric α‐hydroxylation of a lactone with a vinylogous pyridone structure (8 a) by using a guanidine–urea bifunctional organocatalyst. The present oxidation
我们开发了(S)-4-乙基-6,6-(乙二氧基)-7,8-二氢-4-羟基-1 H-吡喃[3,4- f ]吲哚嗪-3,10的催化不对称合成(4 H)二酮(5 a),是(20 S)-喜树碱类似物的合成中间体。该合成的关键步骤是使用胍-脲双功能有机催化剂使具有乙烯基吡啶酮结构(8 a)的内酯不对称α-羟基化。本发明的氧化成功地应用于(+)的C20修饰的衍生物的合成- C20-desethylbenzylcamptothecin(13)。
A new synthesis of pyrrolo[3,2-b]quinolines by a tandem electrocyclization–oxidation process
A newsynthesis of pyrrolo[3,2-b]quinolines is described. Condensation of anilines with dimethyl 4-oxopyrrolidine-1,3-dicarboxylate yields enaminoesters, which upon reaction with Bredereck's reagent produce the title compounds. A possible reaction mechanism is briefly discussed.
描述了吡咯并[3,2- b ]喹啉的新合成。苯胺与4-氧吡咯烷-1,3-二羧酸二甲酯的缩合反应生成烯胺酯,与Bredereck试剂反应后生成标题化合物。简要讨论了可能的反应机理。
[EN] CARBONYL CONTAINING COMPOUNDS FOR CONTROLLING AND REPELLING CIMICIDAE POPULATIONS<br/>[FR] COMPOSÉS CONTENANT UN CARBONYLE POUR MAÎTRISER ET REPOUSSER DES POPULATIONS DE CIMICIDAE
申请人:SEMIOSBIO TECHNOLOGIES INC
公开号:WO2012129702A1
公开(公告)日:2012-10-04
Compositions and methods for controlling and/or repelling bedbugs are provided. The compositions comprise one or more compounds having bedbug repellant activity. Such compounds may be, for example, naturally occurring semiochemicals or structural or functional analogs of naturally occurring semiochemicals. Exemplary compounds are compounds of general formula (I).
Carbonyl containing compounds for controlling and repelling Cimicidae populations
申请人:Gilbert Michael
公开号:US11116212B2
公开(公告)日:2021-09-14
Compositions and methods for controlling and/or repelling bedbugs are provided. The compositions comprise one or more compounds having bedbug repellant activity. Such compounds may be, for example, naturally occurring semiochemicals or structural or functional analogs of naturally occurring semiochemicals. Exemplary compounds are compounds of general formula (I).