Preparation method for 2-phenylacrylonitrile

Preparation method for 2-phenylacrylonitrile

The invention discloses a preparation method for 2-phenylacrylonitrile. Benzyl cyanide and paraformaldehyde are used as raw materials. The preparation method comprises the following steps: 1) enablingthe benzyl cyanide, the paraformaldehyde, an acid-binding agent, a phase transfer catalyst and a sol...

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Hauptverfasser: CAO ZHONG, QIAN CHAO, CHEN XINZHI, RUAN SHIXIANG
Format: Patent
Sprache:chi ; eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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creator CAO ZHONG
QIAN CHAO
CHEN XINZHI
RUAN SHIXIANG
description The invention discloses a preparation method for 2-phenylacrylonitrile. Benzyl cyanide and paraformaldehyde are used as raw materials. The preparation method comprises the following steps: 1) enablingthe benzyl cyanide, the paraformaldehyde, an acid-binding agent, a phase transfer catalyst and a solvent to be mixed in a reactor, warming to 50-80 DEG C and reacting for 1-3 h; and 2) after ending areaction, cooling to a room temperature, stewing and layering, taking an organic phase I positioned on the upper layer, adding diluted hydrochloric acid to the organic phase I until a pH is neutral,stewing and layering, taking an organic phase II positioned on the upper layer, after rotary-evaporating and removing the solvent, performing rectification in vacuum, to obtain the 2-phenylacrylonitrile. The 2-phenylacrylonitrile prepared by using the method has the technical advantages of high chemoselectivity and high yield. 本发明公开了种2-苯基丙烯腈的制备方法，以苯乙腈和多聚甲醛作为原料，包括以下步骤：1)、将苯乙腈、多聚甲醛、缚酸剂、相转移催化剂和溶剂于反应器中混合后，升温至50～80℃反应1～3h；2)、步骤1
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The preparation method comprises the following steps: 1) enablingthe benzyl cyanide, the paraformaldehyde, an acid-binding agent, a phase transfer catalyst and a solvent to be mixed in a reactor, warming to 50-80 DEG C and reacting for 1-3 h; and 2) after ending areaction, cooling to a room temperature, stewing and layering, taking an organic phase I positioned on the upper layer, adding diluted hydrochloric acid to the organic phase I until a pH is neutral,stewing and layering, taking an organic phase II positioned on the upper layer, after rotary-evaporating and removing the solvent, performing rectification in vacuum, to obtain the 2-phenylacrylonitrile. The 2-phenylacrylonitrile prepared by using the method has the technical advantages of high chemoselectivity and high yield. 本发明公开了种2-苯基丙烯腈的制备方法，以苯乙腈和多聚甲醛作为原料，包括以下步骤：1)、将苯乙腈、多聚甲醛、缚酸剂、相转移催化剂和溶剂于反应器中混合后，升温至50～80℃反应1～3h；2)、步骤1</description><language>chi ; eng</language><subject>ACYCLIC OR CARBOCYCLIC COMPOUNDS ; CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY</subject><creationdate>2019</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20190104&amp;DB=EPODOC&amp;CC=CN&amp;NR=109134312A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76418</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20190104&amp;DB=EPODOC&amp;CC=CN&amp;NR=109134312A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>CAO ZHONG</creatorcontrib><creatorcontrib>QIAN CHAO</creatorcontrib><creatorcontrib>CHEN XINZHI</creatorcontrib><creatorcontrib>RUAN SHIXIANG</creatorcontrib><title>Preparation method for 2-phenylacrylonitrile</title><description>The invention discloses a preparation method for 2-phenylacrylonitrile. 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CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
title Preparation method for 2-phenylacrylonitrile
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