نتایج جستجو برای: synthesis procedures
تعداد نتایج: 659064 فیلتر نتایج به سال:
This article will review the essential chemical structure of IDA derivatives and their biokinetic characteristics as the hepatobiliary agents. The article also presents the procedures of Synthesis, formulation and Quality control of mebrofenin (BRIDA) as a 99mTc-Radiopharmaceuticai kit which is produced in Radioisotope Division of N.R.C. 99mTc-BRiDA has extremely low renal excretion and h...
In this investigation, Nano silica chloride (nano SiO2Cl) has been found to be efficient, chemoselective and recyclable catalyst for facile and simple synthesis of germinal diacetates from aromatic and heteroaromatic aldehydes in shorter reaction durations. The products were obtained in high to excellent yields. This work consistently has the advantages of excellent yields, short reaction time,...
Abstract Organic syntheses by adopting green protocols such as sonochemical procedures, microwave technologies, solvent-free conditions, solvent, heterogeneous catalysis particularly nanocatalysts, ionic liquids have replaced the traditional procedures due to concerns pertaining especially environment. The heterocycle, pyrazole, its multifaceted applications has been cyanosure of chemists and t...
the present study concentrates on the synthesis of au nanoparticles (aunps) using aqueous solution of polyvinylpyrrolidone (pvp) and tetrachloroaurate by different methods as thermal, sonochemical and electrochemical reduction. the pvp has been used as a reducing agent and acts as a stabilizer for au nano particles that obtained as principal product. in all synthesis procedures, the active radi...
The present study concentrates on the synthesis of Au nanoparticles (AuNPs) using aqueous solution of Polyvinylpyrrolidone (PVP) and tetrachloroaurate by different methods as thermal, sonochemical and electrochemical reduction. The PVP has been used as a reducing agent and acts as a stabilizer for Au nano particles that obtained as principal product. In all synthesis procedures, the active radi...
A water-accelerated multi-component synthesis of organic target molecules was used as a key method for the preparation of cyclopentadiene derivatives. The three-component condensation reactions of primary amines with alkyl propiolates in the presence of N-methylimidazole in water at room temperature were developed as efficient and clean green synthetic procedures for the high-yielding preparati...
in this investigation, nano silica chloride (nano sio2cl) has been found to be efficient, chemoselective and recyclable catalyst for facile and simple synthesis of germinal diacetates from aromatic and heteroaromatic aldehydes in shorter reaction durations. the products were obtained in high to excellent yields. this work consistently has the advantages of excellent yields, short reaction time,...
nanosilica periodic acid (nano-spia) is found to be a new, powerful, and reusable heterogeneous catalyst for the rapid synthesis of 2-naphtholazo dyes via diazotization of aromatic amines and followsazo coupling with 2-naphthol under solvent-free conditions at room temperature by grinding. eco-friendly, heterogeneous reaction conditions, high stability of diazonium salt, simple experimental pro...
• In this paper we attempt to unify and extend the various approaches to synthesizing fully S testable sequential circuits that can be modeled as finite state machines (FSMs). We first identify classes of redundancies and isolate equivalent-state redundancies as those most difficult to eliminate. We then show that the essential problem behind equivalent-state redundancies is the creation of val...
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