An efficient approach to substituted 1,5,7,8,9-pentahydrocyclopenta[h]-2-benzopyran-3-one derivatives by a palladium-catalyzed tandem reaction of 2,7-alkadiynylic carbonates with 2,3-allenoic acids.
Lian
Xiongdong
X
State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, PR China.
Ma
Shengming
S