Conclusions
The basicity vaues of the ethynyl vinyl ethers and thioethers make it possible to assume that the π-system is the center of the greatest basicity in them, in which connection it is not excluded that the heteroatom can take part in the formation of the H bond.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 1, pp. 155–156, January, 1975.
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Golovanova, N.I., Shergina, N.I., Kudyakova, R.N. et al. Hydeogen bonds of ethynyl vinyl ethers and thioethers with phenol. Russ Chem Bull 24, 144–145 (1975). https://doi.org/10.1007/BF00926311
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DOI: https://doi.org/10.1007/BF00926311