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Propargyl butylamino formate and its synthesis process

A technology of propargyl butyl carbamate and propargyl alcohol, applied in the field of chemical products and synthesis techniques thereof, can solve problems such as no production report of propargyl butyl carbamate

Inactive Publication Date: 2005-07-06
JIANGSU ANPON ELECTROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Propargyl butyl carbamate is a precursor for the synthesis of 3-iodopropargyl butyl carbamate, and 3-iodopropargyl butyl carbamate is an intermediate for the synthesis of fungicides. For propargyl Butyl butyl carbamate has not yet been reported in production

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  • Propargyl butylamino formate and its synthesis process
  • Propargyl butylamino formate and its synthesis process
  • Propargyl butylamino formate and its synthesis process

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Embodiment Construction

[0015] 1. Product name, nature and use

[0016] 1.1 Product name: propargyl butyl carbamate

[0017] Structural formula:

[0018] Molecular formula: C 2 h 13 o 2 N 3

[0019] Molecular weight: 156

[0020] 1.2 Physical and chemical properties of the product

[0021] It is light yellow transparent liquid, boiling point 189℃ / 25Kpa, flammable and poisonous.

[0022] 1.3 Product use

[0023] For fungicide intermediates.

[0024] 2. Main raw and auxiliary materials

[0025] 2.1 propargyl alcohol HC≡C-CH 2 OH: Colorless to light yellow flammable, highly toxic liquid, highly irritating, flash point 36°C, boiling point 115°C, density 0.95×10 3 kg / m 3 , with a saturated vapor pressure of 1.41Kpa (20°C), it has a strong irritating effect on the eyes, skin, mucous membranes and respiratory system.

[0026] 2.2 n-butyl isocyanate CH 3 (CH 2 ) 3 NCO: colorless, flammable, toxic liquid, density 0.89×10 3 kg / m 3 , The boiling point is 115°C, the flash point is 26°C, and ...

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Abstract

The invention discloses proparagyl butylamino formate and its synthesis process. The preparation process comprises propargyl alcohol reacts with n-butyl formate in the presence of catalyst at some temperature to produce crude products after some time, and the crude products are purified to extracted proparagyl butylamino formate by distillation. Preferably, propargyl alcohol reacts with n-butyl formate in a ratio of 1í†0.5-2 in the presence of 0-0.5úÑ (by weight) catalyst spasmolytol or pyridine at a temperature between 20C. and 80C. to produce crude products after 4-10 hours, and the crude products are purified to extracted proparagyl butylamino formate by distillation. The average yield of proparagyl butylamino formate can reach 96.3% and the content of crude products can come to 95%.

Description

Technical field [0001] The present invention relates to a chemical product and its synthesis process, in particular to propargyl butyl carbamate and its synthesis process. Background technique [0002] Propargyl butyl carbamate is a precursor for the synthesis of 3-iodopropargyl butyl carbamate, and 3-iodopropargyl butyl carbamate is an intermediate for the synthesis of fungicides. For propargyl Butyl butyl carbamate has not yet seen production reports. Contents of the invention [0003] The purpose of the present invention is to: provide propargyl butyl carbamate and its synthesis process, solve the industrial synthesis method, provide a kind of fine chemical product, and meet the domestic fungicide market demand. [0004] The technical solution of the present invention is: the propargyl butyl carbamate is reacted at a certain temperature for a certain period of time by a certain molar ratio of propargyl alcohol and n-butyl ester under the action of a catalyst to obtain ...

Claims

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Application Information

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IPC IPC(8): C07C269/00C07C271/12
Inventor 姜盲田王海超季玉祥安礼如江卫东
Owner JIANGSU ANPON ELECTROCHEM
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