Aryl radical cyclisations involving an amide group in the linking chain
作者:Keith Jones、John M. D. Storey
DOI:10.1039/c39920001766
日期:——
Cyclisation of 7, 8 and 9via their derived aryl radicals gives products arising from addition of the aryl radical to the acryloyl double bond exclusively.
7、8和9的环化通过其衍生的芳基自由基生成的产物,专门是芳基自由基与丙烯酰基双键的加成产物。
MERCHANT J. R.; ENGINEER A. B., CURV. SCI. (INDIA), 1979, 48, NO 1, 13-15
作者:MERCHANT J. R.、 ENGINEER A. B.
DOI:——
日期:——
JONES, K.;THOMPSON, M.;WRIGHT, C., J. CHEM. SOC. CHEM. COMMUN., 1986, N 2, 115-116
作者:JONES, K.、THOMPSON, M.、WRIGHT, C.
DOI:——
日期:——
An efficient synthesis of spiro[cyclohexane-1,3′-indol-2′(3′H)-ones]via radical cyclisation
作者:Keith Jones、Mervyn Thompson、Colin Wright
DOI:10.1039/c39860000115
日期:——
Treatment of the o-bromo-N-acryloylanilides (4) with tri-n-butylstannane leads to the formation of 3-substituted- and 3,3-disubstituted-2-oxindoles (5) in high yield.
Solid-phase synthesis of indol-2-ones (2-oxindoles) by means of aryl radical cyclization of resin-bound N-(2-bromophenyl)acrylamides using Bu3SnH is described. Among various solvents tested, DMF was found to be the best choice for the radical cyclization inducing a reagent concentration effect of the polymer support. The reaction proceeded smoothly under microwave irradiation to give the desired indol-2-ones within a very short reaction time in comparison to conventional thermal heating. In this reaction, various indol-2-ones were synthesized by using commercially available 2-bromoanilines and acryloyl chloride derivatives.