phosphonium sentence in Hindi
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- The product contains the phosphonium cation [ HPPh 3 ] +.
- It is also easily alkylated to give phosphonium derivatives RPMe 3 +.
- The phosphonium salts have been traditionally used for peptide synthesis.
- Important chiral cation scaffolds are quaternary ammonium cations and quaternary phosphonium cations.
- The hydride is lithium aluminium hydride and the leaving group a phosphonium salt.
- They also are derived from phosphonium salts, but by deprotonation not alkylation.
- Reduction, iodination, and treatment with triphenylphosphine led to the phosphonium salt.
- Mechanisms differ for aliphatic and aromatic aldehydes and for aromatic and aliphatic phosphonium ylides.
- Unlike phosphonium ylides, the dialkylphosphate salt byproduct is easily removed by aqueous extraction.
- His early work was the study of phosphonium and phosphine derivatives and allied ammonium compounds.
- Other examples include substituted phosphonium salts ( R 4 Bi + ) have also been described.
- In contrast to phosphonium ylides used in the Wittig reaction, phosphonate-stabilized carbanions are more nucleophilic but less basic.
- Recently, besides their novel uses in phosphonium coupling, they have also found similar utilities in certain cross coupling reactions.
- Recent discussions included a quest for a chemical that explodes on contact with light, and the chemical properties of phosphonium nitrate.
- It reversibly accepts dihydrogen at relatively low temperatures to form the phosphonium borate "'2 "'which can reduce simple hindered imines.
- Phosphonium coupling generates in situ a pseudo aryl or heteroaryl halide ( the intermediate phosphonium species ), and subsequently reacts with the other coupling partners under the suitable conditions.
- Phosphonium coupling generates in situ a pseudo aryl or heteroaryl halide ( the intermediate phosphonium species ), and subsequently reacts with the other coupling partners under the suitable conditions.
- To form the Wittig reagent ( ylide ), the phosphonium salt is suspended in a solvent such as diethyl ether or " n "-butyllithium is added.
- After a two-step conversion to the corresponding phosphonium salt, wittig union of phosphonium salt with aldehyde, fragment C, proceeded in 76 % yield and good selectivity.
- After a two-step conversion to the corresponding phosphonium salt, wittig union of phosphonium salt with aldehyde, fragment C, proceeded in 76 % yield and good selectivity.
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