- A simple synthesis of new 2-thioxoimidazolidine-4,5-dicarboxylates from vicinal diisothiocyanatocarboxylates.
[作者:Ciez, Dariusz;Kalinowska-Tluscik, Justyna;Peyrat, Sandrine;Touko, Elodie Pougoue;Trzewik, Bartosz;Zwolinski, Krzysztof;,期刊:Synthesis, 页码:3261-3266 , 文章类型: 研究论文,,卷期:2008年-20]
- hydrolysis of vicinal 2,3-diisothiocyanato carboxylates. The unsym. 2-thioxoimidazolidine-4,5-dicarboxylates were prepd. by addn. of a stoichiometric amt. of primary and secondary amines to vicinal 2,3-diisothiocyanato ...
- Baylis-Hillman reactions of 2-(trifluoroacetyl)-1,3-azoles.
[作者:Khodakovskiy, Pavel V.;Volochnyuk, Dmitriy M.;Shivanyuk, Alexander;Shishkin, Oleg V.;Tolmachev, Andrey A.;,期刊:Synthesis, 页码:3245-3252 , 文章类型: 研究论文,,卷期:2008年-20]
- under Baylis-Hillman reaction conditions to afford heterocyclic trifluoromethyl-contg. allylic alcs. in 36-97% yields. The thus obtained Baylis-Hillman adducts readily undergo Michael addn. reactions with various nucleo...
- Facile and highly regiospecific synthesis of 2-aryl-substituted pyrazolidin-3-ones from a,b-unsaturated N-acylbenzotriazoles and arylhydrazines.
[作者:Wang, Xiaoxia;Wang, Wencun;Wen, Yihang;He, Liang;Zhu, Xiangming;,期刊:Synthesis, 页码:3223-3228 , 文章类型: 研究论文,,卷期:2008年-20]
- The bis-addn. of arylhydrazines to a,b-unsatd. N-acylbenzotriazoles to form heterocyclic compds. was achieved in refluxing THF by using Et3N as promoter. The reaction was highly regioselective, and various 2-arylpyrazol...
- A versatile one-pot synthesis of b-carbolines by reaction of pyranoindolones with phenyl- and benzoylhydrazine.
[作者:Livadiotou, Despina;Hatzimimikou, Dimitra;Neochoritis, Constantinos;Terzidis, Michael A.;Tsoleridis, Constantinos A.;Stephanidou-Stephanatou, Julia;,期刊:Synthesis, 页码:3273-3278 , 文章类型: 研究论文,,卷期:2008年-20]
- The synthesis of a no. of 2-anilino- and 2-(benzoylamino)-b-carbolin-3-ones in good yields by a 1-step sequence from the reaction of pyranoindolones with phenyl- o benzoylhydrazine is described. The obsd. good regiosele...
- Gold-catalyzed dehydrative cyclization of allylic diols.
[作者:Aponick, Aaron;Biannic, Berenger;,期刊:Synthesis, 页码:3356-3359 , 文章类型: 研究论文,,卷期:2008年-20]
- The Au(I)-catalyzed cyclization of monoallylic diols is an efficient method for the formation of tetrahydropyrans from readily available, easily prepd. substrates. The reaction is general and high yielding with low cata...
- A new route for the preparation of succinates.
[作者:Shimizu, Takeshi;Murakoshi, Katsunori;Yasui, Koji;Sodeoka, Mikiko;,期刊:Synthesis, 页码:3209-3218 , 文章类型: 研究论文,,卷期:2008年-20]
- Succinates of formyl-contg. tertiary alcs. were conveniently synthesized by oxidative cleavage of dihydropyrans prepd. from lactones via coupling of ketene acetal triflates and zinc homoenolates.
- A new one-pot synthetic method for selenium-containing medium-sized a,b-unsaturated cyclic ketones.
[作者:Sashida, Haruki;Nakayama, Akemi;Kaname, Mamoru;,期刊:Synthesis, 页码:3229-3236 , 文章类型: 研究论文,,卷期:2008年-20]
- The reaction of tetrahydroselenopyran-2-one with ethynyllithiums, followed by treatment with aq. 5% H2SO4 successfully led to a two-carbon ring expansion to give the 2-substituted 5,6,7,8-tetrahydroselenocin-4-ones in 43...
- Enantioselective iridium-catalyzed allylic aminations of allylic carbonates with functionalized side chains. Asymmetric total synthesis of (S)-vigabatrin.
[作者:Gnamm, Christian;Franck, Geraldine;Miller, Nicole;Stork, Timon;Broedner, Kerstin;Helmchen, Guenter;,期刊:Synthesis, 页码:3331-3350 , 文章类型: 研究论文,,卷期:2008年-20]
- well as enantioselectivity were achieved with diacylamides under salt-free conditions and with arylamines. The results allowed the antiepilepsy drug (S)-vigabatrin to be prepd. via a very short route.
- A novel, one-pot, efficient synthesis of 2-aroyl-1,4-diaryl-7,9-dimethyl-7,9-diazaspiro[4.5]deca-1,3-diene-6,8,1 0-triones.
[作者:Adib, Mehdi;Sayahi, Mohammad Hosein;Ziyadi, Hakimeh;Zhu, Long-Guan;Bijanzadeh, Hamid Reza;,期刊:Synthesis, 页码:3289-3294 , 文章类型: 研究论文,,卷期:2008年-20]
- A novel and efficient synthesis of 2-aroyl-1,4-diaryl-7,9-dimethyl-7,9-diazaspiro[4.5]deca-1,3-diene-6,8,1 0-triones is described. The reactive 1:1 zwitterionic intermediate, formed by the addn. of PPh3 to diaroylacetyl...
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