Reaction #3703014
Related Literature (1)
openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US04605740
Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.
Procedure: 7.2 parts 30% methanolic Na-methylate solution are added to 15 parts ethylenediamine. 77 parts 2-carbomethoxy-7-oxabicyclo(2,2,1)hept-5-ene are added drop-wise at 30° C. during cooling. Recrystallisation is then allowed to proceed overnight and the crystalline mass is dissolved in 400 parts chloroform, and neutralised with 4 parts concentrated hydrochloric acid. 50 parts water are added, the organic phase separated off, and the aqueous phase extracted 5 times with 50 parts chloroform in each instance. The combined organic phases are reduced in a rotary evaporator at a bath temperature of 90° C. and under a vacuum of 20 Torr. The residue is heated in a vacuum of 10 Torr to 110° to 120° C. (bath temperature 140° C.). On conclusion of the furane separation the sedimentation temperature increases to 140° C. After cooling, the product is dissolved in hot n-butanol, filtered, and allowed to recrystallise at 0° C. 27 g N,N'-ethylenebisacrylamide with a melting point of 150° to 155° C. is obtained. during cooling Recrystallisation the crystalline mass is dissolved in 400 parts chloroform 50 parts water are added the organic phase separated off the aqueous phase extracted 5 times with 50 parts chloroform in each instance The combined organic phases are reduced in a rotary evaporator at a bath temperature of 90° C. On conclusion of the furane separation the sedimentation temperature increases to 140° C After cooling the product is dissolved in hot n-butanol filtered to recrystallise at 0° C
Source ID: ord-2180f63ff21347468aa6fc113cb93506