Isolation of bicyclo[3.2.1]oct-3-ene-2,8-dione products (formal 5 + 2 cycloadducts) from reactions of styrenes with 2-alkoxy-1,4-benzoquinones
Abstract
Titanium(IV) catalysed reactions of 2-alkoxy-1,4-benzoquinones and various trans-β-methylstyrenes stereoselectivity produce 7-aryl-3-hydroxy-6-methylbicyclo[3.2.1]oct-3-ene-2,8-diones in moderate yield.