二吲哚甲烷衍生物的一种新型绿色合成

二吲哚基甲烷具有特别的生理活性,是一种很好的抗癌药物。固体酸氨基磺酸做催化剂,吲哚与醛、酮反应合成了一系列二吲哚基烷烃。对溶剂,温度,反应时间等工艺条件进行了探讨,优化条件为:水做溶剂,温度30～40℃,反应时间3 h,此条件下产率最高达到83%。该方法温和简单,安全环保,是一种合成的好方法。     

二吲哚基甲烷及其衍生物的合成与表征

介绍了3,3′-二吲哚基甲烷(D IM)及其衍生物3,3′-二(5-溴吲哚)基甲烷(BB IM)和3,3′-二(5,6-二氯吲哚)基甲烷(BC IM)的合成方法。该方法以吲哚、5-溴-1-氢吲哚和5,6-二氯-1-氢吲哚为原料,在酸性条件下与N-羟甲基丙烯酰胺反应分别得到D IM、BB IM和BC IM,收率分别为90.3%、46.3%和53.3%。通过IR1、HNMR、13CNMR和元素分析对D IM的结构进行了表征,通过IR、1HNMR对BB IM和BC IM的结构进行了表征。     

超声波辐射条件下锡(Ⅱ)催化合成二吲哚基甲烷的方法研究

研究了一种由Sn Cl2催化合成二吲哚基甲烷的高效方法。引用超声波辐射作为反应条件,在反应体系中加入当量的催化剂能够在短时间内合成出二吲哚基甲烷且分离方法简单易行。合成出的系列二吲哚基甲烷具有一定的光学性质,即在400~600 nm波长范围内范围内具有光吸收作用,且在受波长为370 nm光的激发下,会发出波长约为440 nm的紫光。     

微波辅助法合成双吲哚甲烷衍生物

以吲哚、羰基化合物为原料,以路易斯酸固载蒙脱土为催化剂,微波辅助合成标题化合物。考察了溶剂、温度、反应时间、原料物质的量比及催化剂循环使用次数对产率的影响,最优条件下产率高达93.4%,催化剂循环3次产率仍可达71.0%,产物通过~1HNMR、IR、熔点进行表征。     

磷酸二苯酯催化的2-吲哚甲烷胺衍生物的合成

以磷酸二苯酯为催化剂,3-甲基吲哚类化合物与亚胺通过Friedel-Crafts加成反应一步合成了具有广泛药理活性的2-吲哚基甲烷胺类化合物,对反应条件进行优化。结果表明,当n(3-甲基吲哚类)∶n(亚胺)∶n(磷酸二苯酯)=1.0∶2.0∶0.1,其中,磷酸二苯酯0.0025 mmol,1 mL无水二氯甲烷作溶剂,室温下反应0.5 h时,即可得到高收率2-吲哚基甲烷胺类衍生物（85%~90%）。产物经 1HNMR、13CNMR 和 HRMS 进行了结构确定。     

超声辐射下双吲哚甲烷衍生物的合成

以吲哚、醛为原料,蒙脱土固载路易斯酸为催化剂,超声条件下合成双吲哚甲烷类衍生物。得到最优合成条件为n(吲哚)∶n(醛)=2.0∶1.1,蒙脱土负载氯化铜为催化剂,二氯甲烷作溶剂,反应温度为50℃,超声时间为15 min。产率最高达99.3%,催化剂循环3次产率仍可达81.3%。产物通过核磁、红外、熔点进行表征。     

3,3′-二吲哚甲烷的制备新工艺

综合国内外参考文献,简单介绍3,3′-二吲哚甲烷的理化性质、用途和化学合成工艺路线,并提出了一条以吲哚和甲醛为起始原料的适合工业化生产的制备新工艺。该工艺具有原料易得,反应条件温和,质量好,收率高等特点,产品质量符合规定标准。     

磷酸二苯酯催化的2-吲哚甲烷胺衍生物的合成

以磷酸二苯酯为催化剂,3-甲基吲哚类化合物与亚胺通过Friedel-Crafts加成反应一步合成了具有广泛药理活性的2-吲哚基甲烷胺类化合物,对反应条件进行优化.结果表明,当n(3-甲基吲哚类化合物):n(亚胺化合物):n(磷酸二苯酯)=1.0:2.0:0.1,其中,当以0.0025 mmol磷酸二苯酯为催化剂,1 m...     

盐酸催化合成二苯甲烷二氨基甲酸甲酯

用碳酸二甲酯（DMC）代替光气,与苯胺甲氧羰基化反应制得苯氨基甲酸甲酯（MPC）,在盐酸催化剂的作用下,经甲基化缩合反应合成了4,4-二苯甲烷二氨基甲酸甲酯（MDC）;使用液-质联用仪分析了反应物组成;测定了MDC的熔点;采用核磁共振仪对产品结构进行了表征;考察了反应温度、物料配比、反应时间、催化剂用量对MDC收率的影响。实验结果表明,在n（MPC／甲醛）=6：1、15％盐酸用量15mL、反应温度90℃、反应时间3h的条件下,MDC收率达到63％。该合成方法具有便于光气法改造、反应条件温和、催化剂易得易分离等优点。     

Hemetsberger吲哚合成法研究进展

综述了Hemetsberger吲哚合成方法相关的反应及机理,影响反应收率的因素及改进方法。对其在探索生物活性物质合成领域的应用进行了总结。     

Bis(cyclopentadienyl)zirconium Dichloride for Alkylation of Heteroaromatics and Synthesis of Bis(indolyl)methanes

Bis(cyclopentadienyl)zirconium dichloride catalyzed alkylation of heteroaromatics with epoxides results in the formation of 3-alkylated heteroaromatics in high yields. Cp₂ ZrCl₂ is also found to be an efficient catalyst for the electrophilic substitution reaction of indoles with aldehydes and ketones to afford the corresponding bis(indolyl)methanes in high yields with complete regioselectivity.     

Sulfonic acid functionalized mesoporous SBA-15 for one-pot synthesis of substituted aryl-14H-dibenzo xanthenes and bis(indolyl) methanes

The comparative catalytic activity studies of biologically and industrially important compounds such as Xanthenes and bis (indolyl) methanes were evaluated over propylsulfonic acid functionalized SBA-15/SO₃H. The material was characterized via standard characterization techniques such as Powder X-ray diffraction, FTIR, Temperature programmed desorption studies of NH₃. The catalytic performance of SBA/SO₃H under environmentally benign conditions results in high yield of xanthenes compared to bis (indolyl) methanes and finally the mechanism for both the reactions were proposed.     

氧化蒽基二吲哚基甲烷显色现象的研究

通过两步反应合成了两个具有显色特性的化合物:氧化2-蒽基二吲哚基甲烷(2-AnBIM)和氧化9-蒽基二吲哚基甲烷(9-AnBIM).比较了它们在不同非质子溶剂、不同阴离子和酸性环境中的光谱行为.在非质子溶剂中,发现这两种化合物仅在CCl4中有很大的红移,该红移现象的本质尚不清楚.浓度效应与NMR证据均表明在CCl4中化合物存在基于氢键的分子间相互作用.在含有不同阴离子的乙腈中,2-AnBIM对F-离子有选择性响应,而9-AnBIM则对F-、Cl-和Ac-等阴离子均有响应;在质子性溶剂中二者均只对HSO4-有选择性响应.2-AnBIM与9-AnBIM在77 K下有荧光发射,而平面性较好的2-AnBIM具有较低的发射能级与较强的发光效率.室温下二者均无明显的荧光发射,这可能与激发态下快速的质子转移导致分子共轭、共平面程度降低有关.     

双(三甲基硅基)二亚胺的合成研究

以双(三甲基硅基)氨基锂为起始原料,分别与氯化亚砜、三溴化磷反应,合成了双(三甲基硅基)硫二亚胺和双(三甲基)硅胺基-三甲基硅亚氨基磷,然后通过两者间的硫原子迁移反应,合成了标题化合物.通过梯度温度下的减压冷凝,实现了目标化合物的分离和纯化,并采用核磁共振、紫外-可见吸收光谱进行了结构表征,根据最大吸收波长计算得其跃迁能为2.53 ×10-19J.     

Efficient Synthesis of Novel Bis(dipyrromethanes) with Versatile Linkers via Indium(III) Chloride‐Catalyzed Condensation of Pyrrole and Dialdehydes

A new efficient and mild protocol for synthesizing a series of novel bis(dipyrromethanes) with versatile arylene linkers through an indi‐ um(III) chloride‐catalyzed condensation reaction between various dialdehydes and pyrrole has been developed. This protocol is applicable to constructing a variety of bis(dipyrromethanes) with diverse functional linkers, which provides a powerful route to construct libraries of functionalized porphyrin dimers and even multiporphyrin arrays.     

Mechanosynthesis of Triazolyl-bis(indolyl)methane Pharmacophores via Gold Catalysis: A Prelude to Their Molecular Electronic Properties and Biological Potency

Chemical structures possessing both 1,2,3-triazole and bis(indolyl)methane fragments gained considerable interest in drug synthesis owing to their established biological efficacies. However, 1,2,3-triazoles linked at the bridging position of bis(indolyl)methane is a logical and unexplored design approach. In this regard, nine new triazolyl-bis(indolyl)methane conjugates under AuCl catalyzed ball-milling conditions were accomplished. Comparative evaluation on absorptive and emissive properties of the synthesized dyads were also analyzed. To unravel the influence of different peripheral substituents on the electronic structure and π-orbital properties, theoretical investigations were performed. Screening of molecules for free radical scavenging, anti-inflammatory and antidiabetic showed comparable potency against reference drugs. In particular, compounds 7 h , 7 d and 7 a displayed good efficiency of α-amylase inhibition. The DNA gyrase inhibitory potential of all compounds were assessed in silico which revealed high binding affinity (ΔG=−8.99 Kcal/mol) for 7 i followed by 7 h (ΔG=−7.80 Kcal/mol) with the targeted protein.     

Ligand Controlled Highly Selective Copper‐Catalyzed Borylcuprations of Allenes with Bis(pinacolato)diboron

Copper‐catalyzed highly selective borylcuprations of allenes with bis(pinacolato)diboron produce two different types of alkenylboranes by applying a ligand effect. In the presence of tris(para‐methoxyphenyl)phosphine [P(C₆H₄OMe‐p)₃], the reaction of aryl‐1,2‐dienes affords 2‐alken‐2‐yl boronates as the only product with exclusive Z‐geometry; the regioselectivity is switched to afford the 1‐alken‐2‐yl boronates as the major products when the bidentate phosphine 2,2′‐bis(diphenylphosphino)biphenyl is used as the ligand.     

二(三氯甲基)碳酸酯法合成酰氯化合物

采用二(三氯甲基)碳酸酯与相应的羧酸反应,合成了8个具有代表性的酰氯化合物：顺,反-2,2-二甲基-3-(2,2-二氯乙烯基)环丙烷羧酰氯、顺-2,2-二甲基-3-(2-氯-3,3,3-三氟丙-1-烯基)环丙烷羧酰氯、氯乙酰氯、三氯乙酰氯、苯甲酰氯、邻氯苯甲酰氯、邻甲基苯甲酰氯、反-3-苯基-2-丙烯酰氯,收率为82．1％-91．7％,纯度为96．4％-98．9％,