中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-苄基-1H-吲哚-2,3-二酮 | 1-benzylisatin | 1217-89-6 | C15H11NO2 | 237.258 |
—— | (RS)-1-benzyl-3-hydroxy-3-[2-(4-methoxyphenyl)-2-oxoethyl]indolin-2-one | 384356-06-3 | C24H21NO4 | 387.435 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-(2-(1-(1-benzyl-2-oxoindolin-3-yl)-2-(4-methoxyphenyl)-2-oxoethyl)cycloheptylidene)malononitrile | 1572929-12-4 | C34H31N3O3 | 529.638 |
—— | 2-[1-benzyl-3-(3-methylbuty-2-en-1-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-N-methylacetamide | 932042-79-0 | C23H26N2O2 | 362.472 |
An efficient diastereoselective trans cyclopropanation of 3-alkylidene oxindoles with in situ generated α-diazo carbonyl compounds or α,β-unsaturated diazo compounds under metal-free conditions has been developed to synthesize 3-spirocyclopropyl-2-oxindole derivatives. The procedure is based on the 1,3-dipolar character of the corresponding diazo compounds under base-catalyzed conditions. The method has a wide substrate scope and uses easily available starting materials.
A simple synthetic protocol was developed for the efficient synthesis of functionalized dispiro[indoline-3,1′-cyclobutane-2′,3″-indolines] with high diastereoselectivity. The reaction proceeds by cyclodimerization reaction of 3-phenacylideneoxindoles in the presence of a catalytic amount of photosensitizer Ru(bpy3)Cl2 and visible light.