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N,N-Diisopropylethylamine, or Hünig's base, is an organic compound that is a tertiary amine. It is named after the German chemist Siegfried Hünig . It is used in organic chemistry as a non-nucleophilic base. It is commonly abbreviated as DIPEA, DIEA, or i-Pr 2 NEt.
It is also used to prepare N,N-diisopropylethylamine (Hünig's base) by alkylation with diethyl sulfate. [8] The bromide salt of diisopropylamine, diisopropylammonium bromide, is a room-temperature organic ferroelectric material. [9]
Isopropylamine can be obtained by reaction of isopropyl alcohol with ammonia in presence of a catalyst: [3] (CH 3) 2 CHOH + NH 3 → (CH 3) 2 CHNH 2 + H 2 O. Isopropylamine is a building block for the preparation of many herbicides and pesticides including atrazine, bentazon, glyphosate, imazapyr, ametryne, desmetryn, prometryn, pramitol, dipropetryn, propazine, fenamiphos, and iprodione. [3]
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
The molecular formula C 8 H 19 N (molar mass: 129.24 g/mol) may refer to: Dibutylamine; N,N-Diisopropylethylamine, or Hünig's base; Octodrine; Oenethyl
As a result of these and other synthetic difficulties, the authors of a 2018 study predict that the even more crowded tri-tert-butylamine (t Bu 3 N, unknown as of 2023) will likely remain a longstanding unsolved synthetic challenge, even though ab initio calculations indicate that it would be of reasonable stability if it could be prepared. [7]
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