Synthesis and cleavage of 1,3,7-triazapyrene ethers
摘要:
Oxidative alkoxylation of 1,3,7-triazapyrenes in the system ROH-H2O-KOH-K3Fe(CN)(6) leads via a tandem S (N) (H)-S (N) (H) process to the formation of 6,8-dialkoxy-1,3,7-triazapyrenes. Hydrolytic cleavage of these ethers leads to products of single or double dealkylation, depending on the reaction conditions.
Synthesis of heterofunctional 1,3,7-triazapyrene derivatives by SNH and SNAr reactions
作者:I. V. Borovlev、O. P. Demidov、N. A. Kurnosova、E. K. Avakyan、G. A. Amangazieva
DOI:10.1134/s1070428015100140
日期:2015.10
substitution of hydrogen to give the corresponding 6-hydroxyalkylamino derivatives. The reaction of 1,3,7-triazapyrene with sodium amide in DMSO at room temperature yields 1,3,7-triazapyren-6-amine. N-Alkyl-8-methoxy-1,3,7-triazapyren-6-amines or N,N'-dialkyl- 1,3,7-triazapyrene-6,8-diamines are formed in reactions of 6,8-dimethoxy-1,3,7-triazapyrene with alkylamines or amino alcohols in DMSO, depending
作者:Lidia A. Smyshliaeva、Mikhail V. Varaksin、Ekaterina I. Fomina、Margarita V. Medvedeva、Tatiana S. Svalova、Alisa N. Kozitsina、Oleg P. Demidov、Ivan V. Borovlev、Carl Mensch、Pieter Mampuys、Bert U. W. Maes、Valery N. Charushin、Oleg N. Chupakhin
DOI:10.1021/acs.organomet.1c00234
日期:2021.8.23
A convenient transition-metal-free approach, based on nucleophilic substitution of hydrogen (SNH), for consecutive regioselective C–H functionalization of 1,3,7-triazapyrene scaffolds with carboranyllithium and phenyllithium is reported. The theoretical calculations disclosed highlight key features in the regioselectivity and mechanism of the investigated SNH transformations. The novel 1,3,7-triazapyrene-based
一种方便的无过渡金属方法,基于氢的亲核取代(S N H),用于 1,3,7-三氮杂芘支架与碳硼基锂和苯基锂的连续区域选择性 C-H 官能化。公开的理论计算突出了所研究的 S N H转化的区域选择性和机制的关键特征。获得的新型1,3,7-三氮杂芘基邻碳硼烷作为有机发光体在分子电子学领域具有巨大的潜力,其具有聚集诱导发射和双发射效应。
<i>Meso</i>-functionalization of calix[4]arene with 1,3,7-triazapyrene in the design of novel fluorophores with the dual target detection of Al<sup>3+</sup> and Fe<sup>3+</sup> cations
作者:Timofey D. Moseev、Igor A. Lavrinchenko、Mikhail V. Varaksin、Diana Yu. Pobedinskaya、Oleg P. Demidov、Ivan V. Borovlev、Valery N. Charushin、Oleg N. Chupakhin
DOI:10.1039/d0ra10605d
日期:——
A meso-functionalization strategy has successfully been applied to the synthesis of novel 1,3,7-triazapyrene derivatives of calixarenes. The key synthetic step in these transformations providing the direct C-C bond formation is nucleophilic substitution of hydrogen (SN H) in 1,3,7-triazapyrene. General photophysical characteristics for these macrocyclic compounds, as well as features in emission properties
1,3,7‐Triazapyrene and 2‐methyl‐1,3,7‐triazapyrene have shown to react with a wide range of alkylamines in the presence of an oxidant (K3Fe(CN)6) in the water solution at room temperature to give rise to the corresponding 6‐mono‐alkyl(dialkyl)amino‐ and 6,8‐bis‐dialkylamino derivatives. J. Heterocyclic Chem., (2011).
Acid hydrolysis of amines and cleavage of 1,3,7-triazapyrene ethers
作者:N. A. Saigakova、O. P. Demidov、I. V. Borovlev
DOI:10.1134/s1070428013080174
日期:2013.8
Acidhydrolysis of 6-amino derivatives of 1,3,7-triazapyrene affords the corresponding 6-oxo-6,7-dihydro-1,3,7-triazapyrenes. In the case of 6,8-bis(dialkylamino)-1,3,7-triazapyrenes depending on their structure products of hydrolysis of one or two dialkylamino groups are obtained. 6-Alkoxy-8-dialkylamino-1,3,7-triazapyrenes were synthesized. Conditions were found providing a possibility to cleave