The Journal of Organic Chemistry

Ultrasound in organic synthesis. 12. In situ generation and uses of butyllithium reagents in several synthetic reactions

J Einhorn, JL Luche

文献索引：Einhorn, J.; Luche, J. L. Journal of Organic Chemistry, 1987 , vol. 52, # 18 p. 4124 - 4126

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被引用次数: 41

摘要

In a first attempt, we observed that the highly useful, nonnucleophilic strong base, lithium diisopropylamide (LDA) can be prepared without effort from diisopropylamine, lithium, and butyl halides by sonication at 15-18" C of the mixture in dry tetrahydrofuran (THF). As indicated in Table I, much better yields are obtained from chlorides with respect to bromides, and this observation seems to apply to other cases of lithiation. The reagents can be used ...