Solvent-Dependent Reactions for the Synthesis of β-Keto-Benzo-δ-Sultone Scaffolds via DBU-Catalyzed O-Sulfonylation/Intramolecular Baylis–Hillman/1, 3-H Shift or …
... The Journal of Organic ... Chem. ... Vinyl sulfonate 3a, prepared via condensation of aldehyde 1a with (E)-2-phenylethenesulfonyl chloride (2a)(22) (vide infra), served for our early exploration of intramolecular BH chemistry (Scheme 2, Table 1). Compared to other solvents that ...