A highly efficient and convenient procedure for the enantioselective synthesis of (S)-Rivastigmine tartrate, a cholinergic agent for the treatment of mild to moderate dementia of the Alzheimer’s disease, is accomplished by the treatment of versatile, readily accessible N-Ethyl-N-methyl carbamoyl chloride with 3-hydroxyacetophenone under ultrasonic irradiation in presence of nano-K2CO3 were repo...

Dietary administration of 5% L-ascorbic acid plus 3% K2CO3 to male F344 rats clearly enhanced the development of preneoplastic and neoplastic lesions of the urinary bladder initiated with N-butyl-N-(4-hydroxybutyl)nitrosamine. Promotion of carcinogenesis by L-ascorbic acid and K2CO3 was associated with changes in urinary parameters: elevation of pH, increased K+ concentration, and increase in t...

BACKGROUND Drought is a common stress limiting crops growth and productivities worldwide. Water deficit may increase cellular membrane permeability, resulting in K outflow. Internal K starvation may disorder plant metabolism and limit plant growth. However, it is seldom reported about the effects of external K on drought tolerance of contrasting wheat cultivars. METHODOLOGY/PRINCIPAL FINDINGS...

A series of activated carbons (ACs) were prepared by K2CO3 activation from kraft lignin (KL) that was recovered from papermaking black liquor. The effects of process parameters such as the activation temperature (AT), activated period, K2CO3 to KL mass ratio, and N2 flow rate on the characteristics of the final product were determined. The ACs were characterized using nitrogen adsorption, morph...

Water is a critical nutrient for dairy cows, with intake varying with environment, production, and diet. However, little work has evaluated the effects of water intake on rumen parameters. Using dietary potassium carbonate (K2CO3) as a K supplement to increase water intake, the objective of this study was to evaluate the effect of K2CO3 supplementation on water intake and on rumen parameters of...

NOVEL HETEROGENOUS AND MAGNETICALY SEPARABLE CATALYSTS FOR SELECTIVE AND ENANTIOSELECTIVE ORGANIC TRANSFORMATIONS A brief description of the chapters in the thesis is outlined below: Chapter 1 Chapter 2 Chapter 5 Chapter 3 Chapter 4 Section B Section A THESIS CHAPTER-I, describes the various catalysts/process options available for an industrial chemist to effect different organic transformation...

An efficient method for synthesis of 1Acetal diethyl-1H-indole-3-carbaldehyde by combinaison of 1H-indole-3-carbaldehyde and bromoacetal diethyl using Natural phosphate doped with K2CO3 (NP/K2CO3) is described .The reactions promoted by microwave irradiation are advantageous in many ways because of short reaction time, and solvent free reaction conditions . Several reactions of synthetic import...

An efficient and expedient protocol for the synthesis of benzyl phosphonates using KI/K2CO3 as a catalytic system and PEG-400 as benign solvent has been developed. The reaction proceeds smoothly at room temperature achieving excellent selectivity and yield of the corresponding products. The combination of PEG-400, KI, and K2CO3 in this reaction avoids the need of volatile/toxic organic solvents...

The arylation of mono-, di- and tetra-meso-bromophenyl-substituted porphyrins with the heteroarenes containing "acidic" C-H bonds, such as benzoxazole, benzothiazole and N-methylimidazole was studied in the presence of three alternative catalytic systems: Pd(dba)2/DavePhos/Cs2CO3, Pd(PPh3)4/PivOH/K2CO3 and Pd(OAc)2/Cu(OAc)2/PPh3/K2CO3. The first catalytic system was found to be successful in th...

Correction The authors regret to have overlooked an error in (Figure five) of the original version of this article [1]. The original, incorrect form (Figure 1), and the corrected form (Figure 2) are shown in this article. Figure 1 Synthesis of PIM-1, a-reagent and condition, K2CO3, DMAc and DEB at 150°C for 1 h (Incorrect form). Figure 2 Synthesis of PIM-1, a-reagent and condition, K2CO3, DMAc ...