On the [42]Cycloaddition Approach to Indolo[2,3-a]carbazoles
摘要:
2,2'-Biindolyl 9 reacts with electron-deficient dienophiles at 100-110 degrees C to give low to moderate yields of Michael addition and formal [4 + 2] cycloaddition products, with the former predominant; the products derived from 9 and 2-(phenylsulphinyl)maleimides 14 and 15 undergo in situ elimination of benzenesulphenic acid, leading to 2,2'-biindolyl-substituted maleimides which can be efficiently photocyclised into indolo[2,3-a]carbazoles.
A Novel Synthesis of 2,2'-Bisindole and Its Application for the Synthesis of Indolo[2,3-a]carbazole Derivatives
作者:Masanori Somei、Atsushi Kodama
DOI:10.3987/com-92-6044
日期:——
A novel oxidative coupling method of 2-lithio-1-methoxyindole was developed resulting in the formation of 2,2'-bis(l-methoxyindole) (6). Catalytic hydrogenation of 6 produced 2,2'-bisindole (9). Diels-Alder reaction of 9 with dienophiles afforded indolo-[2,3-a]carbazole derivatives.
On the [4 + 2] cycloaddition approach to indolo[2,3-a]carbazoles
作者:John F. Barry、Timothy W. Wallace、Nigel D.A. Walshe
DOI:10.1016/s0040-4039(00)73988-8
日期:1993.8
2,2'-Biindolyl 4 reacts with electron-deficient dienophiles at 100-110-degrees-C to give low to moderate yields of Michael addition and formal [4 + 2] cycloaddition products, with the former predominant; the products derived from 4 and 2-(phenylsulphinyl)maleimides 7 and 8 undergo in situ elimination of benzenesulphenic acid, leading to 2,2'-biindolyl-substituted maleimides which can be efficiently photocyclised into indolo[2,3-a]carbazoles.
FURTHER INDOLE DERIVATIVES WITH ANTIVIRAL ACTIVITY
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0630242B1
公开(公告)日:1999-01-20
On the [42]Cycloaddition Approach to Indolo[2,3-a]carbazoles
作者:John F. Barry、Timothy W. Wallace、Nigel D.A. Walshe
DOI:10.1016/0040-4020(95)00735-q
日期:1995.11
2,2'-Biindolyl 9 reacts with electron-deficient dienophiles at 100-110 degrees C to give low to moderate yields of Michael addition and formal [4 + 2] cycloaddition products, with the former predominant; the products derived from 9 and 2-(phenylsulphinyl)maleimides 14 and 15 undergo in situ elimination of benzenesulphenic acid, leading to 2,2'-biindolyl-substituted maleimides which can be efficiently photocyclised into indolo[2,3-a]carbazoles.