100393-75-7Relevant articles and documents
REACTION OF 1-PHENYLPYRROLIDIN-2-ONES WITH THE VILSMEIER-HAACK REAGENT. A NEW REARRANGEMENT OF Δ2-PYRROLINES CONTAINING A β-CHLOROVINYLALDEHYDE FRAGMENT
Frolov, S. I.,Negrebetskii, V. V.,Nuridzhanyan, K. A.
, p. 834 - 838 (2007/10/02)
Under the conditions of the Vilsmeier reaction at the first stage 1-phenylpyrrolidin-2-ones form (1-phenyl-2-chloro-Δ2-3-pyrrolinylmethylene)-N,N-dimethylammonium salts, which give 1-phenyl-2-chloro-Δ2-pyrroline-3-carbaldehydes durin