An efficient synthesis of 3-ethoxypyrrolidine-2,5-diones and cis-2,3,3a,6a-tetrahydrofuro[2,3-c]pyrrole-4,6(5H)-diones from β-cyanocarboxylic acids
نویسندگان
چکیده
منابع مشابه
An efficient solid-phase synthesis of 3-substituted and 3,3-disubstituted 1,2-dialkylpyrazolidine-3,5-diones.
An efficient and regioselective procedure for the synthesis of di-, tri- and fully-substituted pyrazolidine-3,5-diones on a solid-phase format is described. Microwave irradiation provided significant rate enhancement in this protocol. To demonstrate the versatility of this chemistry, a representative set of 25 compounds was prepared.
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چکیده ندارد.
An Efficient Synthesis of Bis-indolylindane-1,3-diones, Indan-1,3-diones, and Indene-1,3(2H)-denies Using [Hbim]BF4 Ionic Medium
We prepared a brand new molecule in one step for the synthesis of bis-indolylindane-1,3-dione and indan-1,3-diones from the reaction of ninhydrin and 3 substituted/unsubstituted indoles using [Hbim]BF4 ionic liquid in excellent yields. The method was also used for the synthesis of novel indene-1,3(2H)-denies derivatives.
متن کاملBromination and Dehydrobromination Studies on Some CIS-4a-Methyl-Decaline-2,7-Diones
Results of the bromination and dehydrobromination of several angular methylated decalindiones are described. The key reaction, base-induced cyclization of the monobromo keto ester (3), and the dibromo ketone (4), leads to the formation of tricyclic systems (6) and (9) respectively.
متن کاملSynthesis of 2a,8b-Dihydrocyclobuta[a]naphthalene-3,4-diones
On irradiation (λ = 350 nm) in neat hex-1-yne, naphthalene-1,2-dione monoacetals 1 afford mixtures of pentacyclic photodimers and up to 25% (isolated yield) of mixed photocycloadducts 2. Careful acidic hydrolysis of the acetal function of 2 gives the title compounds 3, the overall sequence representing a first approach to a (formal) [2 + 2] photocycloadduct of a 1,2-naphthoquinone to an alkyne.
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ژورنال
عنوان ژورنال: Arkivoc
سال: 2012
ISSN: 1551-7012
DOI: 10.3998/ark.5550190.0013.901