Aldol-cyclization reaction sequence for the synthesis of tetrahydrofurans
摘要:
The aldol reactions of alpha-diazo-beta-ketoesters with a variety of aldehydes produced adducts which underwent Rh(II)-catalyzed O-H insertion reaction to yield highly substituted tetrahydrofurans. Alkylation and decarboxylation of these tetrahydrofurans formed a wide variety of tetrahydrofuran structures. (C) 1997 Elsevier Science Ltd.