نتایج جستجو برای: isocyanate
تعداد نتایج: 1172 فیلتر نتایج به سال:
A concise asymmetric total synthesis of (þ)-indatraline from readily available cinnamic acid is described. The key steps include Corey’s oxazaborolidine-catalyzed asymmetric carbonyl reduction and a highly stereoselective amination of chiral benzylic ether with retention of stereochemistry using chlorosulfonyl isocyanate. 2013 Elsevier Ltd. All rights reserved.
Submit Manuscript | http://medcraveonline.com Abbreviations: MIC: Methyl Isocyanate; UCIL: Union Carbide India Ltd; RDX: Research Development Explosive; HAZOP: Hazard Operability Studies; PHA: Preliminary Hazard Analysis; IHA: Interface Hazard Analysis; O&SHA: Operating and Support Hazard Analysis; QRA: Quantitative Risk Analysis; RA: Risk Analysis; MORT: Management Oversight Risk Tree Analysis...
Reactions of [Pd(styrene)(PR3)2], generated from trans-[PdEt2(PR3)2] and styrene, with 2 equiv. of benzyl isocyanate in THF at room-temperature afforded unusual cyclic Pd-tetramers of five-membered rings consisting of organic isocyanate dimers and palladium, [Pd(PR3){-C(O)N(R)C(O)N(R)-}]4 (PR3 = PMe3, ; PR3 = PMe2Ph, ). Additionally, a cyclic trimer, (RNCO)3, (R = benzyl) was produced as a cata...
Methyl isocyanate (MIC) was tested for genetic toxicity in a variety of in vitro and in vivo assays. Negative results were obtained in the Salmonella/mammalian microsome assay using five bacterial strains in a preincubation protocol. The Drosophila sex-linked recessive lethal test also gave negative results in studies that involved three routes of administration: inhalation, feeding, and inject...
A novel imido-modified SiO2-supported Ti/Mg Ziegler-Natta catalyst for ethylene and ethylene/1-hexene polymerization is investigated. The catalyst is prepared by modification of (SiO2/MgO/MgCl2)TiClx Ziegler-Natta catalysts via supporting vanadium species followed by reaction with p-tolyl isocyanate as imido agents, to get the merits from both the SiO2-supported imido vanadium catalyst and the ...
During some studies on the reactivity of the cystine linkages in wool, it was necessary to find methods for blocking the various polar side chains with minimum degradation of the fibre as a whole, and without introducing any coloration due to the reagent used. Various workers have found that the amino groups of proteins react readily with i8ocyanates in aqueous solution at pH 8 and 00 (Hopkins ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید