A Facile Synthesis of 1,1′-Spirobi(3<i>H</i>,3′<i>H</i>)isobenzofurans
作者:Margaret Brimble、Caryn Burgess
DOI:10.1055/s-2007-965911
日期:2007.3
The synthesis of a series of aryl 5,5-spiroketals containing a 1,1′-spirobi(3H,3′H)isobenzofuran ring system is reported. The key step involves addition of an aryllithium derived from a protected bromobenzyl alcohol to a phthalide; this is followed by deprotection of the benzyl alcohol and acid-catalysed cyclisation.