The addition reaction of dimethyl phosphonate to nitroalkenes gives dimethyl (1-nitromethylalkyl)-phosphonates, which are successfully converted to dimethyl (1-formylalkyl)phosphonates by oxidation with ozone.
The nitro group of dimethyl (1-nitromethylalkyl)phosphonates is conveniently converted into a formyl group by reaction with singlet oxygen to give dimethyl (1-formylalkyl)phosphonates. (1-Formylbutyl)diphenylphosphine oxide is prepared by the same reaction.
A convenient and mild procedure is developed for -nitrophosphonates via phospha-Michael addition of phosphites to nitrostyrene at room temperature in the presence of 1,8-diazabicyclo-[5.4.0]undec-7-ene (DBU)-based ionic liquid [DBUH][OAc]. The operational simplicity, convenient workup, and reusability of the ionic liquid make this method attractive.
Vafina, N. N.; Zyablikova, T. A.; Il'yasov, A. V., Journal of general chemistry of the USSR, 1982, vol. 52, # 1, p. 31 - 35
作者:Vafina, N. N.、Zyablikova, T. A.、Il'yasov, A. V.、Shermergorn, I. M.
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Additions of trialkyl phosphites to nitroalkenes
作者:William E. Krueger、Mary B. McLean、Anastasia Rizwaniuk、John R. Maloney、Gary L. Behelfer、Barbara E. Boland