Catalyst- and solvent-free hydrosulfonylation of alkenes with sulfinates enabling green synthesis of β-sulfonyl amides

An efficient hydrosulfonylation reaction of alkenes with sodium sulfinates as Michael donors has been developed, which affords (3-sulfonyl amides as products with up to 99 % yield. This reaction was conducted under mild conditions without the need of any catalyst, in particular, no solvent was needed for this transformation. This reaction represents the first example of hydrosulfonylation reaction with sodium sulfinates under neat conditions. Moreover, this reaction features wide range of structurally diverse alkenes and sodium sulfinates, which provides a green and valuable strategy for the synthesis of (3-sulfonyl amides.