Synthesis of spiropentacyclic indolines by cyclisation of 3,4-dimethoxyphenylacetyltryptamine
作者:Kshetra M. Biswas、Anthony H. Jackson
DOI:10.1039/c39830000085
日期:——
Cyclisation of N-(3,4-dimethoxyphenylacetyl)tryptamine (4) with either phosphorus trichloride, or phosphoryl chloride, affords the spirocyclic indolin (12) together with small amounts of β-carboline derivatives, whereas with trifluoroacetic anhydride as reagent the spirocyclic indoline(13) is formed in quantitative yield.
用三氯化磷或磷酰氯将N-(3,4-二甲氧基苯基乙酰基)色胺(4)环化,可得到螺环吲哚(12)和少量的β-咔啉衍生物,而以三氟乙酸酐为试剂时,螺环吲哚啉(13)以定量产率形成。