高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (3): 20210690.doi: 10.7503/cjcu20210690

• 有机化学 • 上一篇    下一篇

基于芳叉丙二腈的高活性迈克尔系统的吸湿反应及荧光性质

李巧, 赵洋, 王恩举()   

  1. 海南师范大学化学与化工学院, 热带药用资源化学教育部重点实验室, 热带药用植物化学海南省重点实验室, 海口 571158
  • 收稿日期:2021-09-27 出版日期:2022-03-10 发布日期:2021-11-10
  • 通讯作者: 王恩举 E-mail:enjuwang@163.com
  • 基金资助:
    海南省自然科学基金(219MS043)

Moisture Absorption Reaction and Fluorescence Property of Highly Active Michael System Based on Arylidenemalononitrile

LI Qiao, ZHAO Yang, WANG Enju()   

  1. Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education,Key Laboratory of Tropical Medicinal Plant Chemistry of Hainan Province,College of Chemistry and Chemical Engineering,Hainan Normal University,Haikou 571158,China
  • Received:2021-09-27 Online:2022-03-10 Published:2021-11-10
  • Contact: WANG Enju E-mail:enjuwang@163.com
  • Supported by:
    the Natural Science Foundation of Hainan Province, China(219MS043)

摘要:

建立了一个基于芳叉丙二腈的高活性迈克尔系统2,2-[(5-叔丁基-2-羟基-1,3-苯撑)二甲川]双丙二腈(1), 能迅速吸收空气中的水, 生成稳定的氧杂迈克尔加成产物2-[5-叔丁基-3?(2,2-二腈基?1-羟乙基)-2-羟基苄叉]丙二腈(2). 在二甲亚砜(DMSO)中, 各种碱性催化剂都能使化合物2脱水生成化合物1, 同时发射红色强荧光. 在PBS缓冲溶液(pH=10)中, 化合物2立即脱水生成化合物1, 随后又缓慢加水转变为化合物2. 加热吸附在硅胶上的化合物2的荧光由蓝色变为红色, 温度降低后荧光又恢复为蓝色. 因此, 吸附了化合物2的硅胶可能发展成为一种热敏荧光材料. 此外, 吸附了化合物1的硅胶还对某些有机蒸汽具有荧光响应.

关键词: 氧杂迈克尔反应, 芳叉丙二腈, 吸湿反应, 荧光性质

Abstract:

The phenols and alcohols as nucleophiles are common in oxa-Michael reaction, while H2O normally cannot react with Michael system 2,2'-{[5-(tert-butyl)-2-hydroxy-1,3-phenylene]bis(methaneylylidene)}dimalononitrile(1) was reported, which could rapidly absorb water in the air to afford a stable 2-[5-(tert-butyl)-3-(2,2- dicyano-1-hydroxyethyl)-2-hydroxybenzyli-dene]malononitrile(2via oxa-Michael addition. The high activity of compound 1 resulted from the synergistic effect among the two dicyanovinyl groups and the one hydroxyl group. In dimethyl sulfoxide(DMSO), compound 2 could quickly dehydrate to give compound 1 in the presence of various alkaline catalysts. In PBS buffer(pH=10), compound 2 immediately converted to compound 1, and then converted back to compound 2 slowly. When heat the silica gel plate loading compound 2, the fluorescence conversion from blue to red were observed. Hence, compound 2 adsorbed on silica gel might be developed into a thermosensitive fluorescent material. In addition, compound 2 adsorbed on silica gel showed fluorescence responses to some organic vapors.

Key words: Oxa-Michael reaction, Arylidenemalononitrile, Moisture absorption reaction, Fluorescence property

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