Gas phase elimination reaction of ethylbromoacetate

Ethylbromoacetate was pyrolyzed in a static system and seasoned vessels at temperatures between 339.3 °C–353.3 °C and pressures between 53–166.4 Torr. The rate constant for the homogeneous unimolecular elimination is given by the following Arrhenius equation: log k₁(s^–1)=(12.62±1.01)–(195.7±9.7) kJ/mol/2.303 RT. In comparing the -bromo substituent with the -chloro one in alkyl -monohaloacetates, the former shows about the same rate as the latter. The lack of a very significant difference in rates may be due to their similar electron withdrawing effect under these reaction conditions.

---

, , , 339,3 °C–353,3 °C 53–166,4 . : 10g₁ (^–1)=(12,62±1,01)–(195,7±9,7) ·^–1/2,303RT. - - - . .