The molecularity of an elementary reaction is the number of molecules that collide during that step in the mechanism., 497-25-6, If there is only a single reactant molecule in an elementary reaction, that step is designated as unimolecular. 497-25-6, name is Oxazolidin-2-one. A new synthetic method of this compound is introduced below.
497-25-6, General procedure: General nitration procedure.12-14 A steel autoclave (25 cm3) equippedwith sapphire windows containing urethane 1c or amide 3 or 5 (10.0 mmol)was filled with liquid CO2 to 60 bar pressure and cooled to 0 C. ThenN2O5 (2.4 g, 22.0 mmol) solution in liquid CO2 (~ 4 g) cooled to 0-5 Cwas gradually pressed out from an auxiliary high-pressure cell by a freshCO2 flow (2 g min-1) to the reaction autoclave. During the addition, thepressure in the latter raised up to 80 bar. The reaction mixture was stirredat 0-5 C for the time specified in Table 1. Then, CO2 was removed bydecompression and the residue was poured onto ice water (50 ml). Theresulted suspension was extracted with EtOAc (4 ¡Á 20 ml), the combinedorganic extracts were washed successively with saturated aqueous NaHCO3(2 ¡Á 20 ml) and water (25 ml) and dried over anhydrous Na2SO4. Thesolvent was removed under reduced pressure to afford corresponding nitrocompounds 2, 4 (see Table 1). Compounds 2a,b and 7 were synthesizedby similar procedures using 1.2 g (11.0 mmol) or 6.0 g (55 mmol) ofN2O5, respectively.
Any one of these steps may be slow and thus may serve as the rate determining step. In general, however, in the presence of the catalyst, the overall rate of the reaction is faster than it would be if the reactants were in the gas or liquid phase.
Reference£º
Article; Kuchurov, Ilya V.; Fomenkov, Igor V.; Zlotin, Sergei G.; Tartakovsky, Vladimir A.; Mendeleev Communications; vol. 23; 2; (2013); p. 81 – 83;,
Oxazolidine – Wikipedia
Oxazolidine | C3H7NO – PubChem