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- W2950777654 abstract "Abstract For the first time, π-deficient alkynyl hetarenes were used as dipolarophiles in a 1,3-dipolar cycloaddition reaction with in situ generated azinium ylides. A three-component reaction of pyridine or isoquinoline, ethyl chloroacetate and alkynyl hetarene (pyrazine, quinoxaline, uracil, or lumazine derivative) in the presence of a base gave the corresponding indolizine or pyrrolo[2,1-a]isoquinoline based heterobiaryl in good yields. The reactions proceeded with high regioselectivity; in all cases the most electron-deficient carbon atom of the C C bond of the starting alkynyl hetarene adds to the side-chain carbon of the azinium ylide. 1,3-Dipolar cycloaddition reactions of alkynyl hetarenes with azinium ylides or other 1,3-dipole reagents can be considered as an alternative synthetic approach to heterobiaryls." @default.
- W2950777654 created "2019-06-27" @default.
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- W2950777654 date "2016-07-01" @default.
- W2950777654 modified "2023-09-25" @default.
- W2950777654 title "ChemInform Abstract: 1,3-Dipolar Cycloaddition of Azinium Ylides to Alkynyl Hetarenes: A Synthetic Route to Indolizine and Pyrrolo[2,1-a]isoquinoline Based Heterobiaryls." @default.
- W2950777654 cites W2298277412 @default.
- W2950777654 doi "https://doi.org/10.1002/chin.201633154" @default.
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