Stereoselective syntheses of benzo- and naphtho-pyrans by Lewis acid catalysed isomerisation of aryldioxolanes
作者:Robin G. F. Giles、Ivan R. Green、Lorraine S. Knight、Vanessa R. Lee Son、Rodney W. Rickards、Badra S. Senanayake
DOI:10.1039/c39910000287
日期:——
Phenyl- and naphthyl-dioxolanes are stereoselectively isomerised using titanium tetrachloride in methylene dichloride at –78 °C into benzo- and naphtho-pyrans.