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The exposure of Morita–Baylis–Hillman acetates to mercaptoacetyl transfer agent, 2-methyl-2-phenyl-1,3-oxathiolan-5-one, in the presence of 1,4-diazabicyclo[2.2.2]octane enables the regio- and stereoselective allylic substitution through a tandem S N 2′–S N 2′ mechanism. The product thus formed in situ undergoes selective hydrolysis with water in the presence of CeCl 3 /NaI·7H...
The first example of an operationally simple direct introduction of glycine/mercaptoacetic acid units into electron-poor alkenes is reported. In this protocol, Lewis acid-catalyzed Michael addition of activated glycine or mercaptoacetic acid, that is 2-phenyl-1,3-oxazol-5-one or 2-methyl-2-phenyl-1,3-oxathiolan-5-one, to various electron-poor alkenes in water/1,4-dioxane (1:2, v/v) solvent system...
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