Recognition of Carboxylate Anions and Carboxylic Acids by Selenium-Based New Chromogenic Fluorescent Sensor: A Remarkable Fluorescence Enhancement of Hindered Carboxylates
作者:Shyamaprosad Goswami、Anita Hazra、Rinku Chakrabarty、Hoong-Kun Fun
DOI:10.1021/ol901737s
日期:2009.10.1
new fluorescence sensor 5-pivaloylamino-1,2,5-selenodiazolo[3,4-d]pyrimidin-7-(6H)-one (receptor 1) has been reported for the recognition of monocarboxylic acids and carboxylate anions both by UV−vis and fluorescence methods. Receptor 1 recognizes carboxylate anions more than monocarboxylic acids and it is a selective sensor for carboxylates with specially hindered carboxylate anions. The changes of
据报道,基于硒金属的新型荧光传感器5-新戊酰氨基-1,2,5-硒代二氮杂[3,4- d ]嘧啶-7-(6 H)-one(受体1)可识别单羧酸和通过UV-vis和荧光方法均可羧酸化阴离子。受体1比单羧酸更能识别羧酸根阴离子,它是具有特殊受阻羧酸根阴离子的羧酸根的选择性传感器。在庞大的羧酸根阴离子存在下,荧光强度的变化随着红移而显着增强。已经报道了具有新戊酸的受体1的X射线晶体结构。
Kumar, Arvind; Srivastava, Nivedita; Mital, Alka, Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 1991, vol. 30, # 6, p. 606 - 607
作者:Kumar, Arvind、Srivastava, Nivedita、Mital, Alka
DOI:——
日期:——
US4940760A
申请人:——
公开号:US4940760A
公开(公告)日:1990-07-10
US5019634A
申请人:——
公开号:US5019634A
公开(公告)日:1991-05-28
Stereodivergent Asymmetric Synthesis of α,β-Disubstituted β-Aminoalkylboronic Acid Derivatives via Group-Selective Protodeboronation Enabling Access to the Elusive Anti Isomer
作者:Xiangyu Li、Dennis G. Hall
DOI:10.1021/jacs.0c03207
日期:2020.5.13
Chiral β-aminoalkylboronates generate growing interest as versatile synthetic buildingblocks to access β-aminoalcohols and other useful compounds, and also as bioisosteres of β-aminoacids in drug discovery. In this study, the lack of methodology to access both syn and anti diastereomers of optically enriched, acyclic α,β-disubstituted β-aminoalkylboronates is addressed with the development of a divergent