The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Tris(2,2′-bipyridine)ruthenium bis(hexafluorophosphate)( cas:60804-74-2 ) is researched.Formula: C30H24F12N6P2Ru.Guo, Guozhe; Yuan, Yong; Bao, Xiazhen; Cao, Xuehui; Sang, Tongzhi; Wang, Jiayuan; Huo, Congde published the article 《Photocatalytic redox-neutral approach to diarylmethanes》 about this compound( cas:60804-74-2 ) in Organic Letters. Keywords: bisindolylmethane preparation; indole acetic acid acyloxyphthalimide redox neutral decarboxylative coupling photocatalyst; diarylmethane preparation; aryl acetic acid acyloxyphthalimide indole redox neutral decarboxylative photocatalyst. Let’s learn more about this compound (cas:60804-74-2).
A visible-light induced redox-neutral decarboxylative cross coupling reaction of indole-3-acetic acid NHPI (N-hydroxyphthalimide) esters I [R = H, Br, OMe; R1 = H, (4-chlorophenyl)carbonyl] with indoles e.g., 1H-indole using a Ru photosensitizer to deliver a wide range of sym. and unsym. 3,3′-bisindolylmethane derivatives II [R2 = 3-methyl-1H-indol-2-yl, 6-bromo-5-fluoro-1H-indol-3-yl, 5-([2-(2,4-dichlorophenoxy)acetyl]oxy)-1H-indol-3-yl, etc.] have been reported. Furthermore, the reaction is readily adapted to the preparation of a wide variety of diarylmethane derivatives R3CH2R4 [R3 = 3,4,5-trimethoxyphenyl, 6-methoxynaphthalen-2-yl, 6-chloro-9H-carbazol-2-yl, 2H-1,3-benzodioxol-5-yl, etc.; R4 = 1H-pyrrol-2-yl, 4-(dimethylamino)phenyl, 5-cyano-1H-indol-3-yl, etc.].
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Reference:
Highly efficient and robust molecular ruthenium catalysts for water oxidation,
Catalysts | Special Issue : Ruthenium Catalysts – MDPI