Highly efficient synthesis of vinyl substituted triazoles by Au(I) catalyzed alkyne activation
摘要:
Au(I) catalyzed 1,2,3-triazole addition to non-activated alkyne was reported. A large group of substituted NH-1,2,3-triazoles were suitable for this transformation along with both internal and terminal alkynes. The N-1 and N-2 vinyl substituted 1,2,3-triazoles were prepared in up to 98% yield with as low as 0.2% catalyst loading, thereby providing a new protocol for the synthesis of potentially biological-active vinyl-triazole building blocks. (C) 2009 Elsevier Ltd. All rights reserved.
[EN] DIRECT SYNTHESIS OF 18F-FLUOROMETHOXY COMPOUNDS FOR PET IMAGING AND THE PROVISION OF NEW PRECURSORS FOR DIRECT RADIOSYNTHESIS OF PROTECTED DERIVATIVES OF O-([18F]FLUOROMETHYL) TYROSINE<br/>[FR] SYNTHÈSE DIRECTE DE COMPOSÉS DE 18F-FLUOROMÉTHOXY POUR L'IMAGERIE TEP ET UTILISATION DE NOUVEAUX PRÉCURSEURS POUR LA RADIOSYNTHÈSE DIRECTE DE DÉRIVÉS PROTÉGÉS DE O-([18F]FLUOROMÉTHYL)TYROSINE
申请人:PIRAMAL IMAGING SA
公开号:WO2013001088A1
公开(公告)日:2013-01-03
The invention describes novel direct synthesis methods for converting a precursor into a PET-tracer with a 18F-fluoromethoxy-group. The invention is also directed to novel and stable precursors for the direct radiosynthesis of protected derivatives of O- ([18F]Fluoromethyl) tyrosines.
Katritzky, Alan R.; Li, Jianqing; Malhotra, Nageshwar, Liebigs Annalen der Chemie, 1992, # 8, p. 843 - 854
作者:Katritzky, Alan R.、Li, Jianqing、Malhotra, Nageshwar
DOI:——
日期:——
PURINE DERIVATIVES AS TLR7 INHIBITORS FOR TREATING E.G. SYSTEMIC LUPUS ERYTHEMATOSUS
申请人:Sumitomo Dainippon Pharma Co., Ltd.
公开号:EP3450433B1
公开(公告)日:2021-08-18
DIRECT SYNTHESIS OF 18F-FLUOROMETHOXY COMPOUNDS FOR PET IMAGING AND THE PROVISION OF NEW PRECURSORS FOR DIRECT RADIOSYNTHESIS OF PROTECTED DERIVATIVES OF O-([18F]FLUOROMETHYL)TYROSINE