A nickel phosphide nanoalloy catalyst for the C-3 alkylation of oxindoles with alcohols
نویسندگان
چکیده
منابع مشابه
A novel acid-catalyzed C5-alkylation of oxindoles using alcohols.
A novel C5-alkylation of oxindoles using alcohols as alkylating agents under acid catalysis is described for the first time. The reactions of various benzylic, allylic and propargylic alcohols are studied to obtain the corresponding 5-substituted oxindoles in good yields.
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Although several methods for the preparation of 4o propargyl indole derivatives have been published, this synthetic transformation is complicated by the tendency of 3o propargyl alcohols to form allenium intermediates in acidic media. It is therefore a challenge to find an efficient method for the C-3 propargylation of indoles with 3° propargylic alcohols. In this pa...
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Simple and convenient Lewis acid-catalyzed Friedel-Crafts alkylations of 2-oxindoles as electron rich aromatics with 3-hydroxy-2-oxindoles as electron deficient partners have been developed. The reaction afforded a variety of dimeric 2-oxindoles with a C-3/C-5' linkage having an all-carbon quaternary center at the pseudobenzylic position in high yields.
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although several methods for the preparation of 4o propargyl indole derivatives have been published, this synthetic transformation is complicated by the tendency of 3o propargyl alcohols to form allenium intermediates in acidic media. it is therefore a challenge to find an efficient method for the c-3 propargylation of indoles with 3° propargylic alcohols. in this paper we wish to report on t...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2021
ISSN: 2045-2322
DOI: 10.1038/s41598-021-89561-1