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Ahamed
Organocatalytic Asymmetric Synthesis of Substituted 3-Hydroxy-2-oxindoles via Morita−Baylis−Hillman Reaction, JACS, http://pubs.acs.org/doi...,
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This is what we were talking about. Isatin is very inexpensive. Good starting point? - Ahamed
Yes, but ideally you don't want to be isolating aldehydes. It's usually the case that they are derivatised with something else first to make them easy to purify/analyze. The devil's in that detail. We really want a B-H that does not give an aldehyde. - Matthew Todd