Continuous‐flow Diels‐Alder Reactions of Unactivated Dienes over Zeolitic Catalysts

Abstract Diels–Alder reactions of unactivated dienes with various dienophiles were investigated under continuous‐flow conditions. H‐beta zeolite was found to be a suitable catalyst for this type of transformation, allowing a good productivity of 1.88 kg/dm 3 ⋅day space‐time yield and exhibiting excellent catalyst durability over >72 h of continuous operation. The catalyst was easily recyclable up to four times by simple calcination, without loss of activity.