Molecular addition compounds. 12. Borane adducts of trialkylamines with isopropyl and isobutyl groups of intermediate steric requirements for hydroboration

被引：11

作者：

Brown, HC ^{[1
]}

Zaidlewicz, M ^{[1
]}

Dalvi, PV ^{[1
]}

Narasimhan, S ^{[1
]}

Mukhopadhyay, A ^{[1
]}

机构：

[1] Purdue Univ, HC Brown & RB Wetherill Labs Chem, W Lafayette, IN 47907 USA

来源：

ORGANOMETALLICS | 1999年 / 18卷 / 07期

关键词：

D O I：

10.1021/om9806287

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Borane adducts of selected trialkylamines with isopropyl and isobutyl groups of intermediate steric requirements have been prepared and examined as hydroborating agents. Their reactivity toward 1-octene follows the order i-Pr2NEt . BH3 < i-Bu3N . BH3 < i-PrNBu2i. BH3 < i-Pr2NCH2CH2OMe . BH3 < i-Pr2NBui. BH3 < i-Pr3N . BH3 < i-Pr2NBus. BH3. Borane adducts with i-Pr2NBui, i-Pr3N, and i-Pr2NBus are highly reactive, hydroborating 1-octene in THF at room temperature in less than 1 h. The adduct i-Pr2NBui. BH3 is a liquid above 0 degrees C, 4.6 M in BH3, stable over long periods, and soluble in diethyl ether, tert-butyl methyl ether, tetrahydrofuran, dioxane, dichloromethane, and n-pentane. The adduct i-Pr3N . BH3 is a solid, while i-Pr2NBus. BH3 is a liquid, unstable, slowly evolving diborane at room temperature.

引用

页码：1305 / 1309

页数：5

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