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Reaction of lithium lithioethynyltrialkylborates with alkyl halides. A facile route to lithium trialkyl-1-alkynylborates

โœ Scribed by Kiitiro Utimoto; Yoshiharu Yabuki; Ken-ichi Okada; Hitosi Nozaki

Book ID
104225351
Publisher
Elsevier Science
Year
1976
Tongue
French
Weight
104 KB
Volume
17
Category
Article
ISSN
0040-4039

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โœฆ Synopsis

This paper describes the preparation of lithium lithioethynyltrialkylborates (H) from easily accessible lithium trialkylethynylborates (I)1 and

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1,1,4,7,10-10-Hexamethyltriethylenetetra
1,1,4,7,10-10-Hexamethyltriethylenetetramine: a reagent to enhance the rate of alkylation reaction of the lithium enolate of 1-tetralone with alkyl halides
โœ Mariko Goto; Koh-ichi Akimoto; Kazumasa Aoki; Mitsuru Shindo; Kenji Koga ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 241 KB

The rate of the reaction of the lithium enolate of 1-tetralone with alkyl halides was enhanced greatly in the presence of 3 equivalents of 1,1,4,7,10,10-hexamethyltriethylenetetramine. The ratio of the monoalkylated product to the dialkylated product was found to have increased under a shorter react