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Bi-cyclopropyl compound as well as preparation method and application thereof

A cyclopropyl compound technology, applied in the field of new aerospace fuel, can solve the problems of unfavorable industrial production, complex preparation method, high production cost, etc., and achieve the effects of improving mass specific impulse and effective load, simple process and improving performance

Active Publication Date: 2019-07-23
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But above-mentioned two kinds of cyclopropane fuels all are unfavorable for industrialized production because preparation method is complicated and production cost is expensive

Method used

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  • Bi-cyclopropyl compound as well as preparation method and application thereof
  • Bi-cyclopropyl compound as well as preparation method and application thereof
  • Bi-cyclopropyl compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the preparation of dicyclopropyl compound

[0025] (1) Preparation of zinc-like carbenes.

[0026] in N 2 In the atmosphere, at 0°C, add 15mL CH 2 Cl 2 , 15mL ZnEt 2 (15mmol) reagent and CF containing 15mmol 3 CH of COOH 2 Cl 2 Solution 15mL, stirred for 20min; continue to add 15mmol of CH 2 I 2 CH 2 Cl 2 Solution 15mL, stirred for 20min to obtain zinc carbene body CF 3 COOZnCH 2 I.

[0027] (2) The cyclopropanation reaction of myrcene prepares the bicyclic intermediate 2-(3-cyclopropyl-3-butenyl)-1,1-dimethylcyclopropane, and / or 2-(2-( 1-vinylcyclopropyl)ethyl)-1,1-dimethylcyclopropane, and / or 1-(4-methyl-3-pentenyl)-1,1'-dicyclopropane.

[0028] Add 5 mmol of myrcene in CH to the above zinc carbene 2 Cl 2 15 mL of the solution was stirred at 5°C for 3 h to obtain a liquid mixture with a yield of 64.5% of the bicyclic intermediate. Separation and purification by vacuum distillation technology can obtain bicyclic intermediates, the interme...

Embodiment 2-11

[0032] The reaction steps of embodiment 2-11 are the same as in embodiment 1, the difference is that the reaction conditions include: reaction time, reaction temperature, organic acid reagent type, organic solvent type, and zinc carbene body and myrcene molar ratio etc. are shown in Table 1; The yields (wt%) of the ring intermediate compounds are shown in Table 1.

[0033] Table 1 Example 2-11

[0034]

[0035]After separation and purification of the obtained bicyclic intermediate compound, three kinds of dicyclopropanyl compound mixtures are obtained by hydrogenation reaction, which can be used for aerospace fuels, or compounded with other high-density aerospace fuels to improve the performance of aerospace fuels. performance.

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Abstract

The invention discloses bi-cyclopropyl compound. The bi-cyclopropyl compound is of a following structure; the bi-cyclopropyl compound is named as 2-(3-cyclopropyl butyl)-1,1-dimethyl cyclopropane and / or named as 2-(2-(1-ethyl cyclopropyl)ethyl)-1,1-dimethyl cyclopropane and / or named as 1-(4-methyl pentyl)-1,1-bi-cyclopropane. The invention further discloses a preparation method and application ofthe bi-cyclopropyl compound.

Description

technical field [0001] The invention belongs to the technical field of new aerospace fuels, and specifically relates to a dicyclopropyl compound, its preparation method and the use of aerospace liquid hydrocarbon fuels with high calorific value, high energy and high thermal stability. Background technique [0002] With the rapid development of the aerospace industry, the requirements for matching fuels have also increased, and increasing the density and calorific value of fuels is an important way to improve the propulsion performance of aircraft at low cost. The artificially synthesized fuel has the advantages of high density and high volume calorific value, and can increase the specific impulse of the aircraft to expand the range and payload without increasing the volume of the fuel tank. For rockets, the fuel needs to have high energy density and good thermal stability to increase the specific impulse of the rocket and provide it with coolant. For missiles, the fuel need...

Claims

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Application Information

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IPC IPC(8): C07C13/28C07C5/03C10L1/04
CPCC07C13/28C07C2531/22C10L1/04C07C2601/02
Inventor 邹吉军刘亚坤潘伦张香文
Owner TIANJIN UNIV
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