an efficient and environmentally benign   method for the synthesis of aryl iodides have been developed by diazotization of aromatic amines with nano2 and nanosilica periodic acid (nano-spia) as a green catalyst via grinding followed by a sandmeyer iodination by ki under solvent-free conditions at room temperature. the ensuing aryl diazonium salts supported on nano-spia were sufficiently stable ...

The post-phloem unloading pathway and the mechanism of sugar accumulation remain unclear in litchi fruit. A combination of electron microscopy, transport of phloem-mobile symplasmic tracer (carboxyfluorescein, CF) and biochemical and molecular assays was used to explore the post-phloem transport pathway and the mechanism of aril sugar accumulation in litchi. In the funicle, where the aril origi...

A síntese, a caracterização espectroscópica e os resultados biológicos de novas séries de 2-(4-piridil)-1,2,3,4-tetrahidroquinolinas e seus precursores, -N-aril-N-[1-(4-piridil)but-3-enil] aminas, são descritos. Foi encontrado que ambos, precursores substituídos g-piridil e os produtos finais, as tetrahidroquinolinas, demonstraram excelentes atividades antifúngicas contra Aspergillus fumigatus,...

To investigate the modification of cell wall polysaccharides in relation to aril breakdown in harvested longan fruit, three pectin fractions (WSP, water soluble pectin; CSP, CDTA-soluble pectin; ASP, alkali soluble pectin) and one hemicellulose fraction (4 M KOH-SHC, 4 M KOH-soluble hemicellulose) were extracted, and their contents, monosaccharide compositions and molecular weights were evaluat...

Geuk (Momordica cochinchinensis spreng) tropical fruits, which are produced in Jeju Island, Korea, well known for containing high levels of carotenoids and α-tocopherol. In this study, geuk fruits were separated two parts (pulp; yellow-orange and seed aril; red). The extracts of geuk fruits were simultaneously analyzed for carotenoids and α-tocopherol contents using HPLC. The results showed tha...

Sais e ésteres derivados de ácidos aril borônicos podem ser usados na reação de acoplamento Suzuki com (E)-bromoestilbeno usando uma mistura Pd(OAc)2/PPh3 como precursor catalítico. Enquanto que a adição de uma base como KOH é necessária para a reação de acoplamento com ácido borônico ou seu éster derivado do pinacol, o uso de um aril borato de sódio permite que a reação seja realizada na ausên...

Aril cetonas cíclicas α,α-dicloradas foram obtidas pelo tratamento de uma solução metanólica da correspondente cetona com cândida comercial em condições ambiente com rendimentos que variaram de 61 a 92%. A reação ocorre em cetonas contendo tanto grupos doadores quanto retiradores de elétrons, mas parece ser sensível a efeitos estéricos. Além disso, aril-cicloalcanonas com anéis de cinco, seis e...

A differentiated structure called "aril" has been described in seeds of several plant species during the course of evolution and might be considered as a supernumerary integument. Besides its ecological function in seed dispersal, the structure also represents a relevant character for systematic classification and exhibits important properties that impart agronomic value in certain species. Lit...

The aim of this research was to investigate the effect of pectinase on prebiotic activity and bioactive compounds of enzymatically depolymerized Thailand-grown mangosteen aril. It was found that after varying enzyme concentration in 0-3.0% (v/w), mangosteen aril treated with enzyme concentration of 2.5% (v/w) and hydrolyzed for 0, 1, 2, 4 and 6 h can be hydrolyzed at 5 different levels of reduc...

A ligand-free method for the Pd-catalyzed direct arylation of cyclic enaminones using aryl iodides was developed. This method can be applied to a wide range of cyclic enaminones and aryl iodides with excellent C5-regioselectivity. Using widely available aryl iodides, the generality of this transformation provides easy access to a variety of 3-arylpiperidine structural motifs.