Results 71 to 80 of about 6,045 (297)

Cyclic Guanidines as Efficient Organocatalysts for the Synthesis of Polyurethanes

open access: yes, 2016
A systematic survey of basic/nucleophilic organocatalysts for the polyaddition in bulk of polyols, PEG-600, and PTMO-650, to isophorone diisocyanate (IPDI) has been performed.
Yacine Ait Ammar (2104891)   +5 more
core   +1 more source

Sequential catalytic nanosystem of carbon dots and uricase integrated with polydopamine for therapy of gouty wound ulceration

open access: yesBMEMat, EarlyView.
Sequential dual‐catalytic treatment of the gout wound ulceration process by CDs‐Uri@PDA. (a) Synthesis steps and morphology of CDs‐Uri@PDA. (b) Sequential treatment process and mechanism of CDs‐Uri@PDA for gout wound ulceration according to (i) uric acid reduction, (ii) antibacterial activity, and (iii) anti‐inflammatory effects.
Yonglan Yang   +11 more
wiley   +1 more source

Synthetic Strategies for Activity‐Based Probes to Decode Ubiquitin‐Like Modifiers

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT Ubiquitin‐like proteins (Ubls) such as SUMO, NEDD8, ISG15, URM1, UFM1, FAT10, ATG8/ATG12, and FUBI are essential regulators of cellular homeostasis, controlling processes from protein stability and trafficking to immune signaling and autophagy.
Saibal Chanda   +5 more
wiley   +1 more source

Halocyclization of Unsaturated Guanidines Mediated by Koser’s Reagent and Lithium Halides

open access: yes, 2015
International audienceThe synthesis of halogenated cyclic guanidines through iodine(III)-mediated umpolung of halide salts is described. Cyclic guanidines of various sizes can be obtained with generally excellent regioselectivities through either a ...
Kevin Cariou   +9 more
core   +2 more sources

Recent development of synthetic preparation methods for guanidines via transition metal catalysis

open access: yes, 2015
Multisubstituted guanidines have received much attention because of important applications in many fields, such as pharmaceutics, organometallic and coordination chemistry, and organic synthesis.
Xi, Zhenfeng, Zhang, Wen-Xiong, Xu, Ling
core   +1 more source

State‐of‐the‐Art and Synthetic Challenges for Hydrosilane Production

open access: yesChemistry – A European Journal, EarlyView.
The synthesis of hydrosilanes is currently energy intensive and their recycling is not considered. However, these compounds are important in many industrial fields but also for the valorization of oxygenated waste, towards a circular economy. This review compares the available synthetic routes and highlights the remaining challenges for the production ...
Gabriel Durin   +3 more
wiley   +1 more source

Development of Tartaric Acid Derived Chiral Guanidines and Their Application to Catalytic Enantioselective α‑Hydroxylation of β‑Dicarbonyl Compounds

open access: yes, 2016
A novel library of chiral guanidines featuring a tartaric acid skeleton was developed from diethyl l-tartrate. These guanidines are easily accessed with tunable steric and electronic properties.
Huanrui Zhang (1944676)   +5 more
core   +1 more source

Composite membranes comprising of polymeric and molecular amines embedded in poly(vinyl alcohol) matrices to facilitate CO2/H2 separation

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Polymeric and molecular amines embedded in hygroscopic matrices to facilitate CO2 transport for CO2/H2 separation. Abstract This work dealt with composite membranes comprising of polyvinylamine (PVAm) and triethylenetetramine (TETA) embedded in poly(vinyl alcohol) (PVA) for CO2/H2 separation via facilitated transport of CO2, where polymeric and ...
Steve Yijie Hu, Kean Wang, Xianshe Feng
wiley   +1 more source

A new guanidine alkaloid

open access: yesExperientia, 1969
Ein neues Alkaloid, Pterogynin, wurde aus der Rinde vonPterogyne nitens Tul. (Leguminosae) isoliert und seine Struktur bestimmt. Es handelt sich um das N,N-Di(isopenten-2-yl)-guanidin.
Corral, Renée Antonio   +2 more
openaire   +3 more sources

Synthesis and Antifungal Activity of Some New Guanidines

open access: yes, 2014
The synthesis of some N-subsituted -N'-aryl-N"-ethyl/benzyl guanidines (II) and (III) and their precurser thiocarbamides (I) has been carried out. All these compounds have been screened in vitro for their antifungal activity against Helminthosporium ...
Joshi, P. C., Joshi, Puran Chandra
core   +1 more source

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