Anagram & Information om | Engelska ordet BORANE

Exempel på hur du använder BORANE i en mening

• Although they have few practical applications, the borane hydride clusters exhibit structures and bonding that differs strongly from the patterns seen in hydrocarbons.
• A chemical method for igniting the fuel, triethyl borane (TEB), was developed to match its low volatility.
• The predominant driving force for this face-selective, intramolecular hydride transfer is the simultaneous activation of the borane reagent by coordination to the Lewis basic nitrogen and the enhancement of the Lewis acidity of the endocyclic boron atom for coordination to the ketone.
• Another example is a solution of trimethyl aluminium in an ether solvent (such as THF); similar chemistry should be expected for a triaryl or trialkyl borane.
• The CBS catalyst can be prepared from diphenylprolinol, condensed with a phenylboronic acid, or with borane (as shown below).
• In 1969, Harold Edward Bellis from DuPont filed a patent for a general class of processes using sodium borohydride, dimethylamine borane, or sodium hypophosphite, in the presence of thallium salts, thus producing a metal-thallium-boron or metal-thallium-phosphorus; where the metal could be either nickel or cobalt.
• Hydrogenation with Raney nickel gives the diol 9 which on a double Mitsunobu reaction (with an amine proton donor) gives the azafenestrane 10 as the borane salt.
• Pinacol can be used with borane and boron trichloride to produce useful synthetic intermediates such as pinacolborane, bis(pinacolato)diboron, and pinacolchloroborane.
• The compounds are prepared by attaching the borane to the phosphoramidite stage in the synthesis of nucleosides.
• This sterically crowded chiral trialkylborane can stereoselectively reduce aldehydes in what is known as the Midland Alpine borane reduction, or simply the Midland reduction.
• In organic synthesis, borane tert-butylamine can be used for selective reduction of certain functional groups including aldehydes, ketones, oximes, and imines.
• In 1969, Harold Edward Bellis from DuPont filed a patent for a general class of electroless plating processes using sodium borohydride, dimethylamine borane, or sodium hypophosphite, in the presence of thallium salts, thus producing a metal-thallium-boron or metal-thallium-phosphorus; where the metal could be either nickel or cobalt.
• Another useful reaction is the use of zirconium metallocene complexes to copolymerize olefin with borane monomer.
• Tris(2,2,2-trifluoroethyl) borate can be prepared by reaction of trifluoroethanol with boron trichloride, borane dimethylsulfide, boron tribromide, or boric anhydride.
• Furthermore, it was found that the same germylene hydride reacts with 3 equivalents of ammonia borane at 60 °C in THF, producing methanol (after an aqueous workup) and again reforming the germylene hydride.
• In 2016, Gnanou disclosed a method using a binary system associating triethyl borane with onium salts for efficient synthesis of polycarbonate polyols from CO2 and epoxides, highlighting high selectivity, productivity, and potential for cost-effective large-scale production.

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