-
公开(公告)号:US20200131213A1
公开(公告)日:2020-04-30
申请号:US16485931
申请日:2018-02-13
发明人: Jin-Quan Yu
IPC分类号: C07F15/00
摘要: We report the design of a catalytic, bifunctional template that binds heterocyclic substrate via reversible coordination instead of covalent linkage, allowing remote site-selective C—H olefination of heterocycles. The two metal centers coordinated to this template play different roles; anchoring substrates to the proximity of catalyst and cleaving the remote C—H bonds respectively. Using this strategy, we demonstrate remote site-selective C—H olefination of heterocyclic substrates which do not have functional group handles for covalently attaching templates. For instance the olefination can be an alkenylation of a 3-phenylpyridine with an acrylate alkyl ester selective for the meta position of the phenyl group with respect to the pyridine, or can be an alkenylation of a quinoline with an acrylate alkyl ester selective for the 5-position of the quinoline.
-
公开(公告)号:US11186563B2
公开(公告)日:2021-11-30
申请号:US16086535
申请日:2017-03-20
发明人: Jin-Quan Yu
IPC分类号: C07B53/00 , C07D401/06 , C07D209/48 , C07D213/06 , C07D215/12 , C07D263/10 , C07D413/06 , C07D491/048 , B01J31/18
摘要: Chiral acetyl-protected aminoethyl quinoline (APAQ), pyridine and imazoline ligands are disclosed that enable Pd (II)-catalyzed enantioselective arylation or heteroarylation of ubiquitous prochiral β-methylene C—H bonds of aliphatic amides offers an alternative disconnection for constructing β-chiral centers. Systematic tuning of the ligand structure reveals that a six-membered instead of a five-membered chelation of these types of ligands with the Pd(II) is important for accelerating the C(sp3)-H activation thereby achieving enantioselectivity for quinoline and pyridine ligands.
-
公开(公告)号:US10858383B2
公开(公告)日:2020-12-08
申请号:US16485931
申请日:2018-02-13
发明人: Jin-Quan Yu
IPC分类号: C07F15/00 , C07D213/04 , C07D215/06
摘要: We report the design of a catalytic, bifunctional template that binds heterocyclic substrate via reversible coordination instead of covalent linkage, allowing remote site-selective C—H olefination of heterocycles. The two metal centers coordinated to this template play different roles; anchoring substrates to the proximity of catalyst and cleaving the remote C—H bonds respectively. Using this strategy, we demonstrate remote site-selective C—H olefination of heterocyclic substrates which do not have functional group handles for covalently attaching templates. For instance the olefination can be an alkenylation of a 3-phenylpyridine with an acrylate alkyl ester selective for the meta position of the phenyl group with respect to the pyridine, or can be an alkenylation of a quinoline with an acrylate alkyl ester selective for the 5-position of the quinoline.
-
4.
公开(公告)号:US10696635B2
公开(公告)日:2020-06-30
申请号:US16094707
申请日:2017-04-18
发明人: Jin-Quan Yu
IPC分类号: C07C6/02 , C07D213/68 , C07D401/14 , C07D405/14 , C07D231/12 , C07D231/56 , C07D401/12 , C07D405/12 , C07D239/42 , C07D409/12 , C07D409/14 , C07D241/12 , C07D413/12 , C07D217/12 , C07D213/36 , C07D213/26 , B01J23/44 , C07D213/30 , C07D213/40 , C07D213/55 , C07D213/72 , C07D215/38 , C07D217/18 , C07D217/24 , C07D239/26
摘要: A class of mono-protected 3-amino-2-hydroxypyridine (MPAHP) ligands that enable the meta-C—H arylation of anilines, phenols, phenylacetic acids, and biologically relevant heterocyclic compounds using norbornene as a transient mediator is disclosed, such as in the formation of a reaction product of Formula IA: The applicability of this meta-arylation methodology in the pharmaceutical industry is illustrated for heteroaryl substrates and heteroaryl iodide coupling partners, a feat made possible by using the MPAHP ligand. The enabling nature of MPAHP ligands to achieve other meta-C—H functionalization processes is also illustrated by the development of a meta-C—H amination reaction and a meta-C—H alkynylation reaction.
-
公开(公告)号:US20190119212A1
公开(公告)日:2019-04-25
申请号:US16094707
申请日:2017-04-18
发明人: Jin-Quan Yu
IPC分类号: C07D213/68 , C07D213/40 , C07D215/38 , C07D217/24 , C07D405/12 , C07D409/12 , C07D401/12 , C07D213/30 , C07D213/55 , C07D239/26 , C07D231/12 , C07D213/72 , C07D239/42 , C07D231/56 , C07D217/18 , C07D401/14 , C07D405/14 , C07D409/14 , B01J23/44
摘要: A class of mono-protected 3-amino-2-hydroxypyridine (MPAHP) ligands that enable the meta-C—H arylation of anilines, phenols, phenylacetic acids, and biologically relevant heterocyclic compounds using norbornene as a transient mediator is disclosed. The applicability of this meta-arylation methodology in the pharmaceutical industry is illustrated for heteroaryl substrates and heteroaryl iodide coupling partners, a feat made possible by using the MPAHP ligand. The enabling nature of MPAHP ligands to achieve other meta-C—H functionalization processes is also illustrated by the development of a meta-C—H amination reaction and a meta-C—H alkynylation reaction.
-
公开(公告)号:US11021427B2
公开(公告)日:2021-06-01
申请号:US15733763
申请日:2019-04-17
发明人: Jin-Quan Yu , Pengxiang Shen
IPC分类号: C07C51/353 , C07C67/343 , C07C201/12 , C07C253/30 , C07F9/40 , C07D333/24 , C07D209/49 , C07D209/48 , B01J31/22 , B01J27/232 , C07D307/54
摘要: The invention includes procedures for stereoselective β-acylation of carboxylic acids having a β-carbon atom. For example, stereoselective acylation procedures include the following reactions: (I)
-
公开(公告)号:US10759743B2
公开(公告)日:2020-09-01
申请号:US16344092
申请日:2017-10-19
发明人: Jin-Quan Yu
IPC分类号: C07C211/35 , C07C211/03 , C07C269/04 , C07D215/12 , C07C209/68 , C07D213/40 , C07D213/61 , C07B37/04 , B01J31/22 , C07D213/64 , C07D241/42 , C07D319/18 , C07D333/22 , C07D471/04
摘要: Pd(II)-catalyzed g-G(sp3)-H arylation or heteroarylation of primary amines is realized by using 2-hydroxynicotinaldehyde as a catalytic transient directing group. Importantly, the catalyst and the directing group loading can be lowered to 2% and 4% respectively, thus demonstrating high efficiency of this newly designed transient directing group. Heterocyclic aryl iodides are also compatible with this reaction. Furthermore, swift synthesis of 1,2,3,4-tetrahydronaphthyridine derivatives is accomplished using this reaction.
-
公开(公告)号:US20190315710A1
公开(公告)日:2019-10-17
申请号:US16086535
申请日:2017-03-20
发明人: Jin-Quan Yu
IPC分类号: C07D401/06 , C07D413/06 , C07D263/10 , C07D215/12 , C07D209/48 , C07D213/06 , C07D491/048 , C07B53/00 , B01J31/18
摘要: Chiral acetyl-protected aminoethyl quinoline (APAQ), pyridine and imazoline ligands are disclosed that enable Pd (II)-catalyzed enantioselective arylation or heteroarylation of ubiquitous prochiral β-methylene C—H bonds of aliphatic amides offers an alternative disconnection for constructing β-chiral centers. Systematic tuning of the ligand structure reveals that a six-membered instead of a five-membered chelation of these types of ligands with the Pd(II) is important for accelerating the C(sp3)-H activation thereby achieving enantioselectivity for quinoline and pyridine ligands.
-
公开(公告)号:US20190241508A1
公开(公告)日:2019-08-08
申请号:US16344092
申请日:2017-10-19
发明人: Jin-Quan Yu
IPC分类号: C07C269/04 , C07D319/18 , C07D213/61 , C07D213/64 , C07D213/40 , C07D215/12 , C07D241/42 , C07D333/22 , C07C209/68 , C07D471/04 , B01J31/22
CPC分类号: C07C269/04 , B01J31/2239 , B01J2231/44 , B01J2531/824 , C07B37/04 , C07C209/68 , C07C2601/08 , C07C2601/14 , C07C2601/18 , C07D213/40 , C07D213/61 , C07D213/64 , C07D215/12 , C07D241/42 , C07D319/18 , C07D333/22 , C07D471/04 , C07C211/40 , C07C271/22
摘要: Pd(II)-catalyzed g-G(sp3)-H arylation or heteroarylation of primary amines is realized by using 2-hydroxynicotinaldehyde as a catalytic transient directing group. Importantly, the catalyst and the directing group loading can be lowered to 2% and 4% respectively, thus demonstrating high efficiency of this newly designed transient directing group. Heterocyclic aryl iodides are also compatible with this reaction. Furthermore, swift synthesis of 1,2,3,4-tetrahydronaphthyridine derivatives is accomplished using this reaction.
-
公开(公告)号:US20180009739A1
公开(公告)日:2018-01-11
申请号:US15547014
申请日:2016-01-28
发明人: Jin-Quan Yu
IPC分类号: C07C233/15 , C07D209/48 , C07B43/06 , C07C233/59 , C07C231/12 , C07D307/77 , C07D209/04
CPC分类号: C07C233/15 , C07B43/06 , C07C231/12 , C07C233/59 , C07C2602/10 , C07D209/04 , C07D209/42 , C07D209/48 , C07D307/77 , C07D307/84
摘要: An alternative approach to formation of a C-C bond at a meta-position of an aromatic compound is disclosed that employs an ethylenically unsaturated bicyclic compound as a transient mediator to achieve meta-selective C-H activation with a simple and common ortho-directing group. The use of a pyridine-based ligand assists in relaying the palladium catalyst to the meta-position by the unsaturated bicyclic compound following initial ortho-C-H activation.
-
-
-
-
-
-
-
-
-