Novel synthesis of 4-oxo-1-isoquinolone derivatives utilizing inter- and intramolecular tandem carbopalladation-heterocyclic ring expansion
作者:Ill-Yun Jeong、Yoshimitsu Nagao
DOI:10.1016/s0040-4039(98)01870-x
日期:1998.11
The palladium(0)-catalyzed inter- and intramolecular carbopalladation-heterocyclic ringexpansion employing allenic alcohols and aryl iodides provides a novel and facile route to 4-oxo-1-isoquinolone derivatives in reasonable to high yields.
Novel heterocyclic ring-expansion and/or dehydration-hydration reactions of propargylic and allenylic hydroxy γ-lactams in the presence of strong base or Lewis acid
作者:Ili-Yun Jeong、Woo Song Lee、Satoru Goto、Shigeki Sano、Motoo Shiro、Yoshimitsu Nagao
DOI:10.1016/s0040-4020(98)00897-7
日期:1998.11
were obtained in good yields by the treatment of propargylic hydroxy γ-lactams with some Lewisacids. Several propargylic and allenylic hydroxy γ-lactams were successfully converted to the corresponding ring-expanded benzazepines in various yields via a tandem decyclization-cyclization process in the presence of (TMS)2NLi, (TMS)2NNa, or n-BuLi under reflux conditions in THF.