Ambient Temperature Nitrogen-Directed Difluoroalkynylborane Carboni−Lindsey Cycloaddition Reactions
摘要:
The in situ generation of alkynyldifluoroboranes in the presence of N-heterocycle substituted tetrazines provides a convenient and direct method for the synthesis of pyridazine difluoroboranes. The reactions proceed In 10 min under ambient conditions and provide the opportunity to assemble unsymmetrical products with complete regiocontrol.
Three-Component One-Pot Synthesis of Unsymmetrical Diarylalkynes by Thermocontrolled Sequential Sonogashira Reactions Using Potassium Ethynyltrifluoroborate
作者:Taejung Kim、Kyu Hyuk Jeong、Youngseok Kim、Taesub Noh、Jaeyoung Choi、Jungyeob Ham
DOI:10.1002/ejoc.201700110
日期:2017.5.3
Sonogashira reactions with potassium ethynyltrifluoroborate and two different reactive aryl halides. The one-pot procedure was initiated by the palladium/copper-catalyzed Sonogashira coupling of potassium ethynyltrifluoroborate to an aryliodide or electron-deficient aryl bromide at 40 °C. Following a subsequent deboronative Sonogashira reaction of the in situ generated potassium (arylethynyl)trifluoroborate
Tosyloxybenziodoxolone: A Platform for Performing the Umpolung of Alkynes in One-Pot Transformations
作者:Julien Borrel、Jerome Waser
DOI:10.1021/acs.orglett.1c03771
日期:2022.1.14
Ethynylbenziodoxolones (EBXs) are commonly encountered reagents for the electrophilic alkynylation of nucleophiles. Herein, we report a one-pot, two-step process for EBX generation and their direct application in substrate functionalization. Our approach enables us to bypass the originally mandatory isolation and purification of the reagents, resulting in a more efficient synthesis. We could apply
Facile diverted synthesis of pyrrolidinyl triazoles using organotrifluoroborate: discovery of potential mPTP blockers
作者:Sun hwa Jung、Kihang Choi、Ae Nim Pae、Jae Kyun Lee、Hyunah Choo、Gyochang Keum、Yong Seo Cho、Sun-Joon Min
DOI:10.1039/c4ob01967a
日期:——
This article describes the rapid and diversified synthesis of pyrrolidinyl triazoles for the discovery of mitochondrial permeability transition pore (mPTP) blockers. The 1,3-dipolar cycloaddition of ethynyl trifluoroborate with azidopyrrolidine produced a key intermediate, triazolyl trifluoroborate 4, which subsequently underwent a Suzuki–Miyaura coupling reaction to afford a series of 1,4-disubstituted
申请人:KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY 한국과학기술연구원(319980077518) BRN ▼209-82-03522
公开号:KR20160103390A
公开(公告)日:2016-09-01
본 발명은 미토콘드리아의 기능을 조절하여 신경보호제로서의 약효 활성을 보이면서 동시에 사이토크롬 P450 이소자임의 활성이 저하되어 독성을 유발하는 약물과 병용 투여시에 약물의 독성을 감소시키는 4-(2-벤질옥시페닐)-1-(피롤리딘-3-일)-1,2,3-트리아졸 화합물과, 상기 화합물의 제조방법, 그리고 상기 화합물을 포함하는 약제조성물에 관한 것이다.