1147402-23-0Relevant articles and documents
Catalytic intramolecular formal [3 + 2] cycloaddition for the synthesis of benzobicyclo[4.3.0] compounds
Han, Xun,Ye, Long-Wu,Sun, Xiu-Li,Tang, Yong
supporting information; experimental part, p. 3394 - 3397 (2009/09/08)
In the presence of 20 mol % of tributylphosphine, tert-butyl carbonate substrate 3a undergoes smoothly an intramolecular formal [3 + 2] cycloaddition reaction at room temperature to give benzobicyclo[4.3.0] compounds in 99% yield with a 19/81 ratio of 2a
