Preparation of Monoalkyl Terephthalates: An Overview

Chenot, Elodie‐Denise; Bernardi, Dan; Comel, Alain; Kirsch, Gilbert

doi:10.1080/00397910601039226

Cited by 15 publications

(10 citation statements)

References 18 publications

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“…All other chemicals were used as received. Aniline 1e ,18 N ‐alkylated anilines 2a ,15 2b 15 and 3b ,15 and aroyl chlorides 4b 19 and 4d 20 were prepared according to literature procedures. Acyl chlorides 4a , 4c , 4e , and 17a – 17d were obtained from commercial sources.…”

Section: Methodsmentioning

confidence: 99%

Synthesis of 1,2‐Diaryl‐ and 1‐Aryl‐2‐alkylimidazoles with Sterically Demanding Substituents

2013

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1,2‐Diarylimidazoles are an important class of compounds. They are frequently used as ligands for photophysically active metal complexes and also display physiological activity. We developed a new, high‐yielding procedure for the synthesis of 1,2‐diaryl‐substituted imidazoles with sterically demanding substituents at the respective ortho positions by starting from commercially available anilines and benzoic acids through the corresponding acid chlorides. The metal‐free method provides access to a variety of different substituents on the phenyl rings at N‐1 and C‐2 as well as at the 4,5‐positions of the imidazole backbone. Our new method is also suitable for the preparation of 1‐aryl‐2‐alkylimidazoles.

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Section: Methodsmentioning

confidence: 99%

Synthesis of 1,2‐Diaryl‐ and 1‐Aryl‐2‐alkylimidazoles with Sterically Demanding Substituents

2013

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“…Chemistry Sun degradation of PET plastic waste using NaOH solution for 5 weeks afforded terephthalic acid (1) in a 90% yield, this was followed by esterification with dry butanol containing H 2 SO 4 (9)(10)(11) to afford a mixture of di-butyl terephthalate 2a (80%) and 4-(butoxycarbonyl) benzoic acid 2b (10%) (12) (Scheme 1). Nitration of 2a and 2b provided a route to electrophilic substitution to give the corresponding mononitro-derivatives 3a, b (Scheme 1).…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Biological Evaluation of 1,3,4-Oxadiazole, Triazole and Uracil Derivatives from Poly (ethylene terephthalate) Waste

2016

Egypt. J. Chem.

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OLY(ethylene terephthalate) (PET) was hydrolyzed in aqueous NaOH using solar energy. PET is used as versatile reagent for the synthesis of a variety of heterocyclic compounds. Uracil (6a, b), 1,3,4-oxadiazole (9, 12a, b), 1,3,4-triazole (10, 14), thiadiazole (11a, b and 15) derivatives were synthesized from PET. The antimicrobial and antioxidant activities of the synthesized compounds were evaluated and showed significant activities.

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“…However, the EaS fraction resulting from 32 day cultures yielded compound 6, which was identified as dimethyl terephthalate (Fig. 4) [42], and a subfraction that inhibited 100% the proliferation of tumor cell lines tested. The subfraction 1 H NMR spectrum revealed a mixture of two substances in a 1 : 1 ratio, later separated and identified as (22E,24R)-ergosta-4,6,8(14),22-tetraen-3one (compound 4) and 8-hydroxy-6-methoxy-3-methylisocoumarin (compound 5) in accordance with literature data (Fig.…”

Section: Cytotoxic Activity Of Extractsmentioning

confidence: 99%

Endophytic fungi found in association with Smallanthus sonchifolius (Asteraceae) as resourceful producers of cytotoxic bioactive natural products

Gallo

Chagas

Almeida

et al. 2009

J. Basic Microbiol.

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Smallanthus sonchifolius is a traditional Andean plant which has been cultured mainly in Brazil, Japan and New Zealand due to its medicinal properties. A study of the endophytic fungi associated to the plant was carried out in order to characterize new cytotoxic agents. Thirty two fungal strains were isolated and submitted to cultivation and extraction producing 186 extracts. Of these, 12% displayed moderate to high cytotoxic activities and were considered promising anticancer compound sources. The ethyl acetate fractions of Nigrospora sphaerica and Phoma betae liquid fermentations contained the synergistic compounds 8-hydroxy-6-methoxy-3-methylisocoumarin and (22E,24R)-ergosta-4,6,8(14),22-tetraen-3-one which are potential compounds for drug discovery. Another isolated compound, pimara-7,15-dien-3-beta-ol diterpene is being characterized for the first time through a detailed spectroscopic analysis including GC/MS, homo- and hetero-nuclear correlated NMR experiments (HMQC, HMBC, COSY and NOEdiff) along with its optical rotation.

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Preparation of Monoalkyl Terephthalates: An Overview

Cited by 15 publications

References 18 publications

Synthesis of 1,2‐Diaryl‐ and 1‐Aryl‐2‐alkylimidazoles with Sterically Demanding Substituents

Synthesis of 1,2‐Diaryl‐ and 1‐Aryl‐2‐alkylimidazoles with Sterically Demanding Substituents

Synthesis, Biological Evaluation of 1,3,4-Oxadiazole, Triazole and Uracil Derivatives from Poly (ethylene terephthalate) Waste

Endophytic fungi found in association with Smallanthus sonchifolius (Asteraceae) as resourceful producers of cytotoxic bioactive natural products

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