2016
DOI: 10.1016/j.jfluchem.2016.07.013
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One-pot synthesis and theoretical calculation for trifluoromethylated pyrrolizidines by 1,3-dipolar cycloaddition with azomethine ylides and β-trifluoromethyl acrylamides

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Cited by 17 publications
(9 citation statements)
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“…tributyltin hydride and AIBN in benzene has afforded 2,6disubstituted pyrrolizidines in moderate yields (49-63%) via a cascade of radical reactions. 12 Other (recent) contributions to the preparation of substituted pyrrolizidines involve, for example, the 1,3-dipolar cycloaddition of azomethine ylides [in situ generated from L-proline (ester) and aldehydes] with β-trifluoromethyl acrylamides, 13 1,3-diketones, 14 and dipolarophiles, 15 resulting in a library of polyfunctionalized (trifluoromethylated) pyrrolizidines.…”
Section: Paper Syn Thesismentioning
confidence: 99%
See 1 more Smart Citation
“…tributyltin hydride and AIBN in benzene has afforded 2,6disubstituted pyrrolizidines in moderate yields (49-63%) via a cascade of radical reactions. 12 Other (recent) contributions to the preparation of substituted pyrrolizidines involve, for example, the 1,3-dipolar cycloaddition of azomethine ylides [in situ generated from L-proline (ester) and aldehydes] with β-trifluoromethyl acrylamides, 13 1,3-diketones, 14 and dipolarophiles, 15 resulting in a library of polyfunctionalized (trifluoromethylated) pyrrolizidines.…”
Section: Paper Syn Thesismentioning
confidence: 99%
“…1 H NMR spectra were recorded at 400 MHz on a Bruker Avance III-400 spectrometer with solvents as indicated and TMS as internal standard. 13 C NMR spectra were recorded at 100 MHz on a Bruker Avance III-400 spectrometer with solvents as indicated. IR spectra were recorded on a Spectrum One FT-IR spectrometer or a IRAffinity-1S FT-IR spectrophotometer.…”
Section: Paper Syn Thesismentioning
confidence: 99%
“…Так, каталітичне асиметричне алкілування піролу за Фріделем -Крафтсом застосовували для синтезу хірального похідного піролу з високою енантіомерною чистотою 98 % ee (схема 1а), гідроліз якого з подальшим каталітичним гідруванням фрагменту піролу, циклізацією та дезоксигенацією алюмогідридом літію приводило до трифторованого геліотридану [9]. Трифторометильовані піролізидини також синтезували в результаті реакції азометинових ілідів, що утворюються з L-проліну та альдегідів, з β-трифторометилакриламідом з відмінною діастереоселективністю та помірною регіоселективністю (схема 1b) [10].…”
unclassified
“…4). Trifluoromethylated pyrrolizidines 49 have been synthetized by reaction of aldehydes, proline and β-trifluoromethyl acrylamides 48 in DMSO at 80 °C [37] (Fig. 4).…”
mentioning
confidence: 99%
“…50 [38] , 65-89 % exo-49 [37] endo-49 [37] 54-82 % Diederich and co-workers have prepared several tricyclic thrombin inhibitors by using a decarboxylative 1,3-DC of prolines with benzaldehydes and maleimides [41][42][43][44][45][46]. The most active were those derived from trans-3-hydroxy-L-proline or trans-4-hydroxy-L-proline with 4-bromobenzaldehyde and N-(4-fluorobenzyl)maleimide as the key step (Scheme 7) [45,46].…”
mentioning
confidence: 99%