1: 6-bromo-5-methoxy-2,3-dihydro-benzofuran With n-butyllithium in tetrahydrofuran
T=-25°C; Metallation;
2: N,N-dimethyl-formamide in tetrahydrofuran
T=-25°C; Formylation;
参考文献
SmithKline Beecham Corporation
Patent: US6353116 B1, 2002 ;
Location in patent: Page column 21 ;
US 6353116 B1
