نتایج جستجو برای: 1 diacetate

تعداد نتایج: 2753872  

Journal: :Acta Crystallographica Section E Structure Reports Online 2013

Journal: :Organics 2022

One of the hypervalent iodines most widely used as an oxidizing agent in organic chemistry is (diacetoxyiodo)benzene (PhI(OAc)2), also known (DAIB), phenyliodine(III) diacetate (PIDA). In this septennial mini-review, authors have concisely and systematically presented representative applications PIDA synthesis involving C-H functionalization, hetero-hetero bond formations, heterocyclic ring con...

2009
Asra Mustafa Muhammad Raza Shah Maimoona Khatoon Seik Weng Ng

The two naphthyl fused-ring systems in the title compound, C(22)H(26)O(6), are aligned at 86.7 (1)°. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.

2010
Qamar Ali Itrat Anis Donald VanDerveer Muhammad Raza Shah

In the title compound, C(20)H(22)O(6), the mean planes through the benzene rings make a dihedral angle of 59.82 (7)° with each other. Weak inter-molecular C-H⋯O inter-actions together with π-π stacking inter-actions [centroid-centroid distance = 3.830 (1) Å] between benzene rings are observed in the crystal packing.

Journal: :Molecules 2011
Alejandro Madrid Villegas Luis Espinoza Catalán Iván Montenegro Venegas Joan Villena García Héctor Carrasco Altamirano

Catechols were synthesized from safrole. Nine derivatives were prepared and assessed for antiproliferative effects using different human cell lines. The in vitro growth inhibition assay was based on the sulphorhodamine dye to quantify cell viability. The derivatives 4-allylbenzene-1,2-diol (3), 4 4-[3-(acetyloxy)propyl]-1,2-phenylene diacetate (6) and 4-[3-(acetyloxy)propyl]-5-nitro-1,2-phenyle...

Journal: :Acta Crystallographica Section E Structure Reports Online 2009

Journal: :Environmental Science and Technology Letters 2021

The persistence of cellulose diacetate (CDA), a biobased plastic used in textiles and single-use consumer products, the ocean is currently unknown. Here, we probe disintegration degradation CDA-based materials (25 μm films, 510 foam, 97 g/m2 fabric) by marine microbes continuous flow seawater mesocosm. Photographic evidence mass loss measurements demonstrate that disintegrate months. Disintegra...

Journal: :Journal of the American Chemical Society 2006
Tracy Yuen Sze But Patrick H Toy

A catalytic Mitsunobu reaction system is described in which the azo reagent is used as an organocatalyst and iodosobenzene diacetate is used as the stoichiometric oxidant. In this system, iodosobenzene diacetate oxidizes the formed hydrazine byproduct to regenerate the azo reagent. Yields obtained in the catalytic reactions using a variety of carboxylic acids and alcohols were slightly lower th...

Journal: :Molecules 2015
Yongkang Gai Zhongping Hu Zhao Rong Xiang Ma Guangya Xiang

The preparation of triazamacrocyclic hydroxypyridinonate (HOPO-TACN) derivatives as potential chelators for metals in biomedical applications was reported. The synthesis is based on a convergent synthetic approach, in which the key intermediate di-tert-butyl-2,2'-(1,4,7-triazonane-1,4-diyl) diacetate was coupled with a hydroxypyridinonate pendant arm. The method is suitable for rapid syntheses ...

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