Jr. Hwu et al., A NEW METHOD FOR NITRATION OF ALKENES TO ALPHA,BETA-UNSATURATED NITROALKENES, Journal of the Chemical Society, Chemical Communications, (12), 1994, pp. 1425-1426
alpha,beta-Unsaturated nitroalkenes were synthesized in 54-99% yields
by sonication of a chloroform solution containing the corresponding al
kenes, NaNO2 (10 equiv.), Ce(NH4)(2)(NO3)(6) (2.0 equiv.), and acetic
acid (12 equiv.) in a sealed tube at 25-73 degrees C.