Various isomers can be observed in the Friedel–Crafts alkylation of benzene. However, mechanism and influence these isomerization reactions were still unclear. In this work, several methyl phenylundecanoate analyzed by gas chromatography–mass spectrometry to explore alkylation. The results showed that there three reaction: five 6–10-phenylundecanoate due carbocation rearrangement, 6–9-methyldec...

Glycidyl ester (GE) has attracted worldwide attention due to its potential harm human health. The GE in edible oil forms during the deodorization process of refining, where antioxidants are used inhibit formation. To replace unsafe conventional synthetic with natural antioxidants, sesame (SO) was formation corn (CO), palm (PO), and rice bran (RO) process. results showed that content SO, CO, PO ...

fecl3.6h2o was used as an efficient catalyst for the synthesis of highly functionalized piperidines via a one-pot five-component reaction of aromatic amines, aromatic aldehydes and β-keto esters in etoh at room temperature. the remarkable advantages offered by this method are good yields, simple procedure, short reaction times, no need to column chromatography and easy work-up. the structures o...

determination of volume change of unsaturated soils during loading and suction change is one of the most important difficulties in testing unsaturated specimens. it is revealed from literature review that various attempts have been made to invent an apparatus that can be used in testing on unsaturated soil specimens, simply and accurately. in this research, details of design and manufacture of ...

Current periosteal grafts have limitations related to low mechanical strength, tissue adhesiveness, and poor osteogenesis angiogenesis potential. Here, a periosteum mimicking bone aid (PMBA) with similar structure function natural is developed by electrospinning photocrosslinkable methacrylated gelatin (GelMA), l-arginine-based unsaturated poly(ester amide) (Arg-UPEA), hydroxyapatite nanopartic...

Abstract The synthesis of Lipoxin B 4 analogs (LXB ) to gain access stabilized inflammation resolving compounds is an actual field research. Focusing on variation and stabilization the conjugated E,Z,E,E C6–C13 tetraene moiety natural LXB , a methylene bridge introduced between C6 C11 suppresses any Z/E isomerization C8–C9 olefin. Intending enable prospective structure variations in connection ...

1. The major classes of neutral lipids and the phospholipids were determined in sarcolemma, fragmented sarcoplasmic reticulum, and mitochondria of rat skeletal muscle. 2. The lipid composition of the sarcolemma is clearly different from that of sarcoplasmic reticulum and mitochondria. The sarcolemma contains a high content of phosphatidylserine and sphingomyelin in the phospholipid as well as l...

The title compound, C(34)H(52)N(2)O(7)·CH(4)O, is the methanol solvate of a difunctionalized derivative of the therapeutic agent 18β-glycyrrhetinic acid, a penta-cyclic triterpene. The five six-membered rings of the glycyrrhetinic acid moiety show normal geometries, with four rings in chair conformations and the unsaturated ring in a half-chair conformation. This moiety is substituted by a nitr...