Synthesis of Methyl-N-[4-(3-R-amino-2-hydroxypropoxy)phenyl]carbamates

By alkylation of methyl-N-(4-hydroxyphenyl)carbamate with (chloromethyl)oxirane in acetone in the presence of K₂CO₃ methyl-N-[4-(2,3-epoxypropoxy)phenyl]carbamate was prepared. The aminolysis of the latter effected by benzylamine, morpholine, piperidine, and pyrrolidine occurs in keeping with Krasusky rule to afford methyl-N-[4-(3-R-amino-2-hydroxypropoxy)phenyl]carbamates.     

[4-(4-苯甲酰基苯氧基)苯]苯基碘鎓六氟磷酸盐的合成

紫外光固化反应分为自由基固化机理、阳离子固化机理,以及自由基-阳离子混杂固化机理。自由基-阳离子混杂固化是指在同一体系里同时发生自由基光聚合反应和阳离子光聚合反应[1],结合了前两类聚合反应的优点,表现出很好的协同效应[2]。[4-(4-苯甲酰基苯氧基)苯]苯基碘鎓六氟磷酸     

2-甲基-N-[4-硝基-3-三氟(甲基)苯基]丙酰胺的改进合成

以3－三氟里基苯为原料,在吸酸剂碳酸氢钠作用下与2－甲基丙酰氯反应得到2－甲基－N－[4－硝基－3－三氟（甲基）苯基]丙酰胺,再进行混酸硝化得到目标化合物。     

罗非昔布类似物4—[4—（甲磺酰基）苯基]—3—环己基—2（5H）呋喃酮的合成

对环氧合物－2选择性抑制剂罗非昔布（Rofecoxib)进行了结构修饰,以对甲磺酰基苯乙酮为原料,经过溴化得到溴酮,然后与环己基乙酸钠在室温下反应,得到环己基乙基乙酸酯,后者在避光,碱存在下环合得到了新合物4－[4－（甲磺酰基）苯基]－3－环己基－2（5H）呋喃酮。目标产物结构经IR和^1H NMR验证。     

One-Pot Synthesis and Methylation of 3-[2-(1H-Benzimidazol-2-yl-Sulfanyl)-Acetyl]-Chromen-2-Ones

Abstract

3-(2-Bromoacetyl)coumarins (I), when treated with 2-mercatobenzimidazole (II) in acetone containing K₂CO₃ (mild base) and tetrabutylammonium bromide (TBAB) as a phase transfer catalyst, at room temperature yielded the title compound 3-[2-(1H-benzimidazole-2-yl-sufanyl)-acetyl]-chromen-2-one (III) in a one-pot synthesis. Alternatively, III could also be prepared by treating dithiocarbonic acid O-ethyl ester, S-[2-oxo-2-(2-oxo-2H-chromen3-yl)-ethyl] ester (V), with o-phenylenediamine (VI). The methylation of the title compound III was performed with dimethyl sulfate (DMS), in acetonitrile containing TBAB and K₂CO₃ at room temperature, resulting in 3-[2-(N-methyl-benzimidazol-2-yl-sulfanyl)]-acetyl-chromen-2-ones (VII). Alternatively, methylation of III could also be performed with DMS in acetonitrile containing K₂CO₃ as base and clay as surface catalyst. All the compounds were synthesized in good yields and their structures were confirmed by spectral and analytical data.

[Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements for the following free supplemental resource: ¹H NMR of IIIB, VB and VIIB]     

3-[3-甲氧基-4-(2-乙氧基-2-氧代乙氧基)苯基]丙烯酸乙酯的合成及其晶体结构

以香草醛为原料,经Williamsom反应和Knoevenagel-Doebner反应制得新化合物3-(3-甲氧基-4-羧甲氧基苯基)丙烯酸(2);2与乙醇经酯化反应合成了阿魏酸衍生物——3-[3-甲氧基-4-(2-乙氧基-2-氧代乙氧基)苯基]丙烯酸乙酯(3),其结构经1H NMR,IR,元素分析和X-射线单晶衍射确证。3属三斜晶系,空间群P-1,晶胞参数a=8.301,b=8.474,c=11.445,α=82.94°,β=86.86°,γ=84.52°,V=794.63,Z=2,Dc=1.289 g·cm-3,R1=0.046 7,wR2=0.101 8。3通过分子间氢键(C-H┈O)形成了二维网状结构。     

3-[(2-二甲基氨甲基)环己基]苯基乙酸酯盐酸盐的合成

以盐酸曲马多为起始原料,通过脱羟基,去甲基和乙酰化反应合成了一种新化合物3-[(2-二甲基氨甲基)环己基]苯基乙酸酯盐酸盐,其结构经1H NMR, MS和元素分析表征.     

3-[4-(咪唑)苯乙烯基]-9-乙基咔唑的合成及其性质研究

通过固相Wittig反应合成了一种新型含π电子共轭体系的咔唑衍生物——3-[4-(咪唑)苯乙烯基]-9-乙基咔唑(4),其结构经1HNMR,IR,MS,元素分析和X-射线单晶衍射表征。结果表明,4具有较高的热稳定性及优良的光学性质。     

Synthesis of （S）-2-（3-Arylacrylamido）-3-{4-[2-（5-methyl-2-phenyloxazol-4-yl）ethoxy]phenyl}propanoic Acids

The synthesis of （S）-2-（3-arylacrylamido）-3-{4-[2-（5-methyl-2-phenyloxazol-4-yl）etho- xy]phenyl}propanoic acids is described. Their structures were confirmed by ^1H-NMR.     

(E)-2-[2-(6-氯嘧啶-4-基氧基)苯基]-3-甲氧基丙烯酸甲酯的合成工艺改进

以3-(α-甲氧基)亚甲基苯并呋喃-2-(3H)-酮为原料,经3步反应合成了杀菌剂嘧菌酯的重要中间体——(E)-2-[2-(6-氯嘧啶-4-基氧基)苯基]-3-甲氧基丙烯酸甲酯(4),总收率61%。4的结构经NMR表征。     

N-[4-(三氟甲氧基)苯基]氨基甲酸苯酯的合成

以三氟甲氧基苯为起始原料,经硝化、加氢还原和酰化反应合成了N-[4-(三氟甲氧基)苯基]氨基甲酸苯酯,总收率84.6%,纯度98.9%,其结构经¹H NMR和MS（ESI）确证。     

Synthesis and antiestrogenic activity of the compounds related to the metabolites of (E)-4-[1-[4-[2-(dimethylamino)ethoxy]phenyl]- 2-(4-isopropylphenyl)-1-butenyl]phenyl monophosphate (TAT-59) [corrected

The metabolites of (E) [corrected]-4-[1-[4-[2-dimethylamino)ethoxy]phenyl]- 2-(4-isopropylphenyl)-1-butenyl]phenyl monophosphate, TAT-59, (1), a potent antitumor agent for hormone-dependent tumors, and derivatives of TAT-59 were synthesized to confirm its proposed structure. The structure and the Z-configuration of the metabolites (2a-8a) were confirmed by comparison with synthesized authentic compounds. All of the metabolites and the derivatives of TAT-59 were tested for a binding affinity toward estrogenic receptors in vitro and antiuterotrophic activity in vivo. Most of the metabolites possessed remarkable binding affinity toward estrogenic receptors as well as fairly good antiuterotrophic activity.     

9,9-二[4-(4-羧基苯氧基)苯基]呫吨的合成

在碘化亚铜、四丁基溴化铵和磷酸钾存在下,9,9-二(4-羟基苯基)呫吨(1)和4-甲基碘苯(2)于N,N-二甲基甲酰胺溶剂中发生Ullmann偶联反应,加热回流反应24 h,以95%的产率合成了中间体--9,9-二[4-(4-甲基苯氧基)苯基]呫吨(3),继而加入催化量的N-溴代丁二酰亚胺并在光照条件下,将中间体3氧化得到一种新型芳香族二羧酸--9,9-二[4-(4-羧基苯氧基)苯基]呫吨(4),其产率为84%,二步反应总收率为79.8%。 目标化合物4经1H NMR、13C NMR、IR和元素分析测试技术确定了其结构。 该法具有原料易得,操作简单,反应条件温和,收率高等优点。     

4-(对取代苯基)-2-[2-(取代苯基)呋喃-4-甲酰胺]-1',3',4'-均三唑[1,2-d]-1,3,4-噻二唑类衍生物的合成和生物活性

以1-氨基-5-巯基-2-(对取代苯基)-1,3,4-均三唑和5-取代苯基-2-呋喃甲酰异硫氰酸酯为原料, 合成了10个未见文献报道的含苯环连呋喃的均三唑并噻二唑类衍生物, 通过元素分析, ¹H NMR, IR和MS确定化合物的结构, 初步生物活性测试表明标题化合物具有一定的除草活性.     

N-[4-(磺酰胺)苯基](甲基)丙烯酰胺的合成

以对氨基苯磺酰胺、丙烯酰氯(或甲基丙烯酰氯)为原料合成了N-[4-(磺酰胺)苯基]丙烯酰胺(ASPAA)和N-[4-(磺酰胺)苯基]甲基丙烯酰胺(ASPMAA),其结构经^1H NMR,IR和元素分析表征。合成ASPAA的最佳条件：对氨基苯磺酰胺13．76g(80mmol),n(对氨基苯磺酰胺)：n(丙烯酰氯)=1．0：1．1,n(丙烯酰氯)：n(NaHCO3)：1．00：1．14,0℃～2℃反应3h,反应液倾入10倍体积的的甲醇-水[V(甲醇)：V(水)=1：10]中析出产物,收率在60％以上。合成ASPMAA的最佳条件：对氨基苯磺酰胺6．88g(40mmol),n(对氨基苯磺酰胺)：n(甲基丙烯酰氯)=1.00：1．05,n(三己胺)：n(甲基丙烯酰氯)：1．0：1．0,在0℃～2℃滴加甲基丙烯酰氯后先在室温下反应1h,然后在60℃反应1h,反应液倾入700mL石油醚中析出产物,收率50％～60％．