小说理论研究的深化和突破——评《小说创作技巧描述》
Published in Acta Scientiarum Naturalium Universitatis Sunyatseni • Jan 1, 1992
Authors:
阎志芬
Abstract
A new method for the syntheses of the 4-amino-pyrimidine nucleosides (1a, b) has been developed. The method consists of conversion of uridines into quaternary-ammonium intermediates (4a, b) by the reaction with p-toluenesulfonyl chloride(TsCl) in the presence of tertiary-amines, followed by aminatio...
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