o-methoxymandelonitrile acetate

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: o-methoxymandelonitrile acetate
• 英文别名: cyano(2-methoxyphenyl)methyl acetate；2-acetoxy-2-(2-methoxyphenyl)acetonitrile；1-cyano-1-(2-methoxyphenyl)methyl acetate；[Cyano-(2-methoxyphenyl)methyl] acetate
• 化学式: C₁₁H₁₁NO₃
• 分子量: 205.213
• InChiKey: VMIZULQAVBMBAA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.6
• 重原子数：
  15
• 可旋转键数：
  4
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  59.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  o-methoxymandelonitrile acetate 以42%的产率得到
  参考文献：
  名称：

  VAN, ALMSICK ANDREAS;BUDDRUS, JOACHIM;HONICKE-SCHMIDT, PETRA;LAUMEN, KURT+, J. CHEM. SOC. CHEM. COMMUN.,(1989) N8, C. 1391-1393

  摘要：

  DOI：
• 作为产物：
  描述：

  2-(2-methyloxyphenyl)-2-(trimethylsilyloxy)acetonitrile 在 吡啶 、 盐酸 、 4-二甲氨基吡啶 作用下， 以 四氢呋喃 、 二氯甲烷 、 水 、 乙酸乙酯 为溶剂， 生成 o-methoxymandelonitrile acetate
  参考文献：
  名称：

  樱桃李的羟基腈裂解酶同工酶：鉴定，表征和合成应用。

  摘要：

  源自巴达木（Prunus communis）的生物催化剂已被用于催化（R）-4-甲基硫烷基扁桃腈的不对称合成，这是甲砜霉素和氟苯尼考的关键组成部分。在这里，克隆了来自巴达木的四个羟腈裂解酶（HNL）同工酶，并在巴斯德毕赤酵母中异源表达。全面探讨了这些同工酶的生化性质和催化性能，以评估其在不对称合成中的效率和选择性。其中，Pc鉴定出HNL5在不对称氢氰化反应中具有出色的活性和对映选择性。在优化的温和两相反应条件下，将十七种前手性芳族醛转化为有价值的手性氰醇，具有良好的收率（高达94％）和出色的光学纯度（高达> 99.9％ee），可轻松获得多种手性氨基醇，降糖药，血管紧张素转换酶（ACE）抑制剂和β受体阻滞剂。因此，这项工作强调了在同工酶组中发现最有效的生物催化剂以将非天然底物转化为增值产品的重要性。

  DOI：

  10.1002/adsc.201601332

文献信息

• Cyanative self-condensation of aromatic aldehydes promoted by VO(OiPr)3–Lewis base as a cooperative catalyst
  作者：Koichi Kodama、Hiroaki Kawamata、Naoya Takahashi、Takuji Hirose

  DOI：10.1039/c2ob26811f

  日期：——

  Self-condensation of aromatic aldehydes with trimethylsilyl cyanide proceeded by the cooperative catalytic effect of VO(OiPr)3 and a Lewis base to give the corresponding O-acylated cyanohydrins. The reaction conversion and selectivity were strongly dependent on the solvent used, the Lewis base, and the presence of oxygen. All the nine kinds of aromatic aldehydes considered herein afforded the O-acylated cyanohydrins with excellent selectivity under an O2 atmosphere.

  芳香醛与三甲基硅基氰的自缩合反应在VO(OiPr)3和路易斯碱的协同催化作用下进行，生成相应的O-酰基化氰醇。反应的转化率和选择性强烈依赖于所使用的溶剂、路易斯碱以及氧气的存在。本文考虑的九种芳香醛在氧气氛围下均以优异的选择性生成了O-酰基化氰醇。
• Synthesis of some new chiral bifunctional o-hydroxyarylphosphonodiamides and their application as ligands in Ti(IV) complex catalyzed asymmetric silylcyanation of aromatic aldehydes
  作者：Ke He、Zhenghong Zhou、Lixin Wang、Kangying Li、Guofeng Zhao、Qilin Zhou、Chuchi Tang

  DOI：10.1016/j.tet.2004.08.082

  日期：2004.11

  Some new chiral bifunctional o-hydroxyarylphosphonodiamides were synthesized starting from (+)-cis-1,2,2-trimethylcyclopentane-1,3-diamine and the absolute configuration of the phosphorus atom was determined by X-ray diffraction analysis. Excellent enantioselectivity (up to 98% ee) was achieved in asymmetric silylcyanation of aromatic aldehydes using a chiral titanium complex formed in situ from Ti(OiPr)4

  从（+）-顺式-1,2,2,2-三甲基环戊烷-1,3-二胺开始合成了一些新的手性双官能邻-羟基芳基膦二酰胺，并通过X射线衍射分析确定了磷原子的绝对构型。使用由Ti（O i Pr）4和邻羟基芳基膦二酰胺原位形成的手性钛络合物，在芳族醛的不对称甲硅烷基氰化反应中实现了极好的对映选择性（高达ee的98％）。
• N-heterocyclic carbene catalyzed cyanation reaction of carbonyl compounds with ethyl cyanoformate and acetyl cyanide
  作者：Jie Zhang、GuangFen Du、YueKe Xu、Lin He、Bin Dai

  DOI：10.1016/j.tetlet.2011.10.119

  日期：2011.12

  employed as an efficient catalyst for cyanation reaction of carbonyl compounds. Under catalysis of 1 mol % NHCs, various aldehydes and 2,2,2-trifluoroacetophenone coupled with ethyl cyanoformate in THF to provide cyanohydrins ethyl carbonates in excellent yields. While in the presence of 10 mol % catalyst, different types of aldehydes and 2,2,2-trifluoroacetophenone reacted with acetyl cyanide in dichloroethane

  N-杂环卡宾（NHC）已被用作羰基化合物氰化反应的有效催化剂。在1 mol％NHCs催化下，各种醛和2,2,2-三氟苯乙酮与氰基甲酸乙酯在THF中偶联，以优异的产率提供氰醇碳酸乙酯。在存在10mol％催化剂的情况下，不同类型的醛和2,2,2-三氟苯乙酮与乙酰氯在二氯乙烷中反应，以中等至高收率得到酰化的氰醇。
• Palladium-Catalyzed Regioselective Olefination of <i>O</i>-Acetyl Cyanohydrins
  作者：Qiu-Ju Liang、Bing Jiang、Yun-He Xu、Teck-Peng Loh

  DOI：10.1021/acs.joc.8b00991

  日期：2018.8.3

  A practical palladium-catalyzed ortho-olefination of O-acetyl cyanohydrins assisted by synergetic directing groups has been developed. Thus, a range of olefinated O-acetyl cyanohydrins were synthesized in moderate to good yields. The reaction occurs efficiently with high regioselectivity and with a satisfactory tolerance of functional groups.

  已经开发了由协同指导基团辅助的实用的钯催化的O-乙酰基氰醇的邻位烯烃化。因此，以中等至良好的产率合成了一系列烯化的O-乙酰基氰醇。该反应以高区域选择性和令人满意的官能团耐受性有效地发生。
• A simple separation method for (S)-hydroxynitrile lyase from cassava and its application in asymmetric cyanohydrination
  作者：Zubiao Zheng、Yan Zi、Zhongzhou Li、Xinzhuo Zou

  DOI：10.1016/j.tetasy.2013.03.015

  日期：2013.4

  Using an acetone precipitation method, crude (S)-hydroxynitrile lyase [(S)-MeHNL] was separated from Munihot esculenta (cassava) leaves, and used directly as biocatalyst to catalyze asymmetric cyanohydrination and produce cyanohydrins with enantiomeric purities (>= 90% ee) significantly greater than those previously reported. The use of a water/i-Pr2O system with an enzyme, NaCN, and appropriate amounts of acetic acid is crucial in improving the stereoselectivity of cyanohydrin formation by minimizing the non-enzymatic reaction and the racemization of the chiral products. The proposed isolation method for crude (S)-MeHNL has a high value because of its simplicity, and low cost as well as the high activity of the crude (S)-MeHNL. (C) 2013 Elsevier Ltd. All rights reserved.