Solid-Phase Synthesis of Oximes

Hajipour, Abdol R.; Mohammadpoor‐Baltork, Iraj; Nikbaghat, K.; Imanzadeh, Gholamhasan

doi:10.1080/00397919908086156

Cited by 66 publications

(20 citation statements)

References 7 publications

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“…Customary method for oxime preparation involves treatment of carbonyl compounds with hydroxylamine hydrochloride in a basic aqueous medium with pH adjustment. Solvent and reagent amounts and conditions are critical for successful oxime formation [12,13].…”

Section: Introductionmentioning

confidence: 99%

Optimization of carbohydrate silylation for gas chromatography

Rojas-Escudero

Jiménez

Elizalde-Galván

et al. 2004

Journal of Chromatography A

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Section: Introductionmentioning

confidence: 99%

Optimization of carbohydrate silylation for gas chromatography

Rojas-Escudero

Jiménez

Elizalde-Galván

et al. 2004

Journal of Chromatography A

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“…A number of catalysts have been documented, such as TiO 2 /SO 4 −2 [10], ZnO [11], CuSO 4 and K 2 CO 3 [12], glycine [13], CaO [14], silica gel [15], or without any base, but coupled with microwave irradiation [16], MW [17], K 2 CO 3 /MW [18], wet basic Al 2 O 3 /MW and molecular sieve 4Å [19], NaOH [20], Ionic Liquid/water Biphasic System [21], silicaphos (P 2 O 5 /SiO 2 ) [22], and HPA [23]. Many methods are not very satisfactory due to drawbacks such as low yields, problems of generation of polluting HCl, high reaction temperature, long reaction time, and use of organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Emeraldine Base Form of Polyaniline Nanofibers as New, Economical, Green, and Efficient Catalyst for Synthesis of Z-Aldoximes

Boddula

Srinivasan

2014

Journal of Catalysts

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A facile, clean, economical, efficient, and green process was developed for the preparation of Z-aldoximes at room temperature under solvent-free condition using emeraldine base form of polyaniline as novel catalyst. In this methodology, PANI base absorbed the by-product of HCl (polluting chemical) from hydroxylamine hydrochloride and converted to polyaniline-hydrochloride salt (PANI-HCl salt). This PANI-HCl salt could be easily recovered and used in new attempts without any purification in many areas such as catalyst, electrical and electronics applications meant for conducting polymers. As far as our knowledge is concerned, emeraldine base as catalyst in organic synthesis for the first time.

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“…Products were characterized by comparison with authentic samples ( 1 H NMR, IR and GC spectrum, melting and boiling point, TLC) [5][6]. 1 H NMR spectra were recorded on a 250 MHz in CDCl 3 , IR spectra on a FT-IR-680 plus and GC spectra on a GC-14A shimadzu.…”

Section: Methodsmentioning

confidence: 99%

“…These compounds not only represent a useful series of derivatives of carbonyl compounds but also may be used as intermediates for the preparation of amides by the Beckmann rearrangement [1], nitrones [2], hydroximinoyl chlorides, nitrile oxide [3] and chiral Į-sulfinyl oximes [4]. The usual method for preparation of oximes [5,6] involves treatment of carbonyl compounds with hydroxylamine hydrochlorides in a basic aqueous medium with adjusted pH. Application of microwave heating technique has been currently under intensive investigation [7] and has been recently reviewed [8].…”

Section: Introductionmentioning

confidence: 99%