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1, 2, 3-triazole as the Directing Gr...

Ye, Xiaohan.

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1, 2, 3-triazole as the Directing Group for Metal-Catalyzed C-H Activation.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	1, 2, 3-triazole as the Directing Group for Metal-Catalyzed C-H Activation./
作者:	Ye, Xiaohan.
面頁冊數:	526 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
Contained By:	Dissertation Abstracts International76-12B(E).
標題:	Organic chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3718609
ISBN:	9781321985085

1, 2, 3-triazole as the Directing Group for Metal-Catalyzed C-H Activation.
Ye, Xiaohan.

1, 2, 3-triazole as the Directing Group for Metal-Catalyzed C-H Activation. - 526 p.

Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.

Thesis (Ph.D.)--West Virginia University, 2015.

1,2,3-Triazoles as versatile directing group for selective sp 2 and sp3 C--H activation: cyclization vs substitution .

ISBN: 9781321985085Subjects--Topical Terms:

523952
Organic chemistry.

1, 2, 3-triazole as the Directing Group for Metal-Catalyzed C-H Activation.
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245 1 0 $a 1, 2, 3-triazole as the Directing Group for Metal-Catalyzed C-H Activation.
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500 $a Source: Dissertation Abstracts International, Volume: 76-12(E), Section: B.
500 $a Adviser: Xiaodong Michael Shi.
502 $a Thesis (Ph.D.)--West Virginia University, 2015.
520 $a 1,2,3-Triazoles as versatile directing group for selective sp 2 and sp3 C--H activation: cyclization vs substitution .
520 $a A selective cyclization and substitution was achieved with designated 1,2,3-triazole acid auxiliary groups as directing groups under Pd catalyzed C--H activation conditions. Both sp2 and sp3 C--H bonds were effectively activated, giving the desired products in good yields. This result revealed the first successful example of exclusive substitution using 1,2,3-triazole ligands, while other triazole-containing directing groups dominantly gave cyclization under identical conditions.
520 $a Palladium-Catalyzed Aerobic Oxidative C--H Olefination with Removable 1,2,3-Triazole Directing Group.
520 $a Ortho-olefination of arenes was achieved with removable 1,2,3-triazole auxiliary through Pd-catalyzed C--H activation. Excellent yields were received even when molecular O2 (1 atm) was used as the terminal oxidant. Other heterocyclic directing groups, such as pyridine and quinoline, gave poor reactivity under this aerobic oxidative condition, which highlighted the unique reactivity of triazole in promoting directed C--H activation.
520 $a Nickel-catalyzed directed sulfenylation of sp2 and sp3 C--H bonds.
520 $a Directed sulfenylation of both sp2 and sp3 C--H bonds was achieved via nickel catalyzed C--S bond formation, giving the desired product in good to excellent yield (up to 90%). Other metal cations including Cu, Fe, Pd, Rh, Ru and Co, gave almost no reaction under identical conditions, which highlighted the unique reactivity of this Ni system.
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