Multicomponent Assembly of α,α‐Bis‐Sulfonyl Arylketones and Multiple Substituted Conjugated Dienes Induced by Visible‐Light Irradiation without Additives and Photocatalysts
is described to produce α,α-bis-sulfonyl arylketones from bromoalkynes and sulfinic acids under visible-light irradiation, this visible-light-promoted multicomponent cascade processes are used withoutadditives or photocatalysts. Replacing sulfinic acids with sodium arylsulfinates results in another multicomponent reaction for synthesizing multisubstituted conjugateddienes with 26%–54% yields via