Rhodium(III)-Catalyzed Annulation of Pyridinones with Alkynes via Double C–H Activation: A Route to Functionalized Quinolizinones
作者:Juan Li、Yudong Yang、Zhigang Wang、Boya Feng、Jingsong You
DOI:10.1021/acs.orglett.7b01159
日期:2017.6.16
A Rh(III)-catalyzed oxidative annulation of pyridin-2(1H)-ones with alkynesviadouble C–H activation to produce highly functionalized 4H-quinolizin-4-ones is disclosed. This reaction features easily available starting materials, simple manipulation, a relatively wide substrate scope, and good functional group tolerance. The application of this protocol is demonstrated by the synthesis of a known fluorescent
BIOCATALYST AND METHODS FOR SYNTHESIZING MIXED DISULFIDE CONJUGATES OF THIENOPYRIDINE COMPOUNDS
申请人:The Regents of the University of Michigan
公开号:US20200370081A1
公开(公告)日:2020-11-26
The present invention relates to methods for synthesizing mixed disulfide conjugates of thienopyridine compounds with a genetically engineered variant of cytochrome P450 BM3 or CYP102A1 as a catalyst, and belongs to the field of chemical synthesis.
A rhodium(III)-catalyzed Satoh–Miura type oxidative annulation of N-aryl 2-pyridone derivatives is described using internal alkyne as a coupling partner. A weakly coordinating carbonyl group of the 2-pyridone ring is utilized for this transformation. The reaction proceeds with a broad scope and wide functional group tolerance. The solvent plays an important role in the developed method to furnish a
Biorelevant Weakly Coordinating Directing Group Assisted C–H Alkenylation with Cyclopropanols via Sequential C–H/C–C Activation
作者:Tripti Paul、Shubhajit Basak、Maniya V. Nanjegowda、Tharmalingam Punniyamurthy
DOI:10.1021/acs.orglett.3c03493
日期:2023.12.22
A weakly coordinating biorelevant intrinsic directing group (DG) assisted site-selective C–H alkenylation viasequential C–H/C–C bond activation has been accomplished under Ru(II)-catalysis using readily accessible cyclopropyl alcohol as an alkenyl surrogate. Utilization of an intrinsic DG, exclusive regioselectivity, functional group diversity, late-stage natural product and drug mutations are the
Herein, we report a novel regioselective [2 + 1] cyclization reaction of 2-pyridones with carbenes generated in situ via visible light irradiation, without the requirement for catalysts or additives. The diverse functional groups of 2-pyridones and diazo compounds exhibit good tolerance, enabling the rapidsynthesis of highly valuable cyclopropanated dihydro-2-pyridone scaffolds with exceptional regio-