Zobrazeno 1 - 10
of 4 772
pro vyhledávání: '"Hypervalent iodine"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2931-2939 (2024)
Hypervalent iodine(III) reagents have become indispensable tools in organic synthesis, but gaps remain in the functionalities they can transfer. In this study, a fundamental understanding of the thermal stability of phosphorus-iodonium ylids is obtai
Externí odkaz:
https://doaj.org/article/8af5e3f3aea94ae6983a7967778c9c97
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 3113-3133 (2024)
The chemistry of hypervalent iodine (HVI) reagents has gathered increased attention towards the synthesis of a wide range of chemical structures. HVI reagents are characterized by their diverse reactivity as oxidants and electrophilic reagents. In ad
Externí odkaz:
https://doaj.org/article/fca86d2d2dfa4b709da3c53ff80c24d4
Autor:
Dangui Wang, Jinbei Yao, Wentao Zhang, Shuyue Zhang, Huaibin Yu, Laihu Peng, Weijun Yao, Zhifeng Dai, Guojiao Wu, Fangrui Zhong
Publikováno v:
Green Synthesis and Catalysis, Vol 5, Iss 4, Pp 324-328 (2024)
C(sp2)-H amination represents an attractive approach for the synthesis of enamines, which is intrinsically associated with the challenge of controlling of stereochemistry and primarily relying on transition-metal catalysis. Herein, a metal-free C(sp2
Externí odkaz:
https://doaj.org/article/ba44698d0d21414fbaf2d2c926ccd9b9
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2305-2312 (2024)
Iminoiodinanes comprise a class of hypervalent iodine reagents that is often encountered in nitrogen-group transfer (NGT) catalysis. In general, transition metal catalysts are required to effect efficient NGT to unactivated olefins because iminoiodin
Externí odkaz:
https://doaj.org/article/51db98f5fb414dbf8e11886af21ba4bc
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2401-2407 (2024)
Diaryliodonium(III) salts have been established as powerful halogen-bond donors in recent years. Herein, a new structural motif for this compound class was developed: iodoloisoxazolium salts, bearing a cyclic five-membered iodolium core fused with an
Externí odkaz:
https://doaj.org/article/9029cd31309d47d989b777ecb837a26f
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 2455-2460 (2024)
A change in mechanism was observed in the hypervalent iodine-mediated cyclization of N-alkenylamides when the carbon chain between the alkene and the amide increased from two to three atoms. In the latter case, cyclization at the amide nitrogen to fo
Externí odkaz:
https://doaj.org/article/ca0ec8c7cff44a1587db6df817b92310
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1914-1921 (2024)
Isoquinolinone is an important heterocyclic framework in natural products and biologically active molecules, and the efficient synthesis of this structural motif has received much attention in recent years. Herein, we report a (phenyliodonio)sulfamat
Externí odkaz:
https://doaj.org/article/67bf7dd110af4afca20a1274bb022979
Autor:
Kevin A. Juárez-Ornelas, Manuel Solís-Hernández, Pedro Navarro-Santos, J. Oscar C. Jiménez-Halla, César R. Solorio-Alvarado
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1580-1589 (2024)
The reaction mechanism for the chlorination and bromination of 2-naphthol with PIDA or PIFA and AlX3 (X = Cl, Br), previously reported by our group, was elucidated via quantum chemical calculations using density functional theory. The chlorination me
Externí odkaz:
https://doaj.org/article/4da5c9e35eed4be9bb7737aea4d64832
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1677-1683 (2024)
We present N-heterocycle-stabilized iodanes (NHIs) as suitable reagents for the mild oxidation of activated alcohols. Two different protocols, both involving activation by chloride additives, were used to synthesize benzylic ketones and aldehydes wit
Externí odkaz:
https://doaj.org/article/693e425617a64258a89c6be3ffd5c595
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1785-1793 (2024)
The ability to investigate hypervalent iodine(V) fluorides has been limited primarily by their difficult preparation traditionally using harsh fluorinating reagents such as trifluoromethyl hypofluorite and bromine trifluoride. Here, we report a mild
Externí odkaz:
https://doaj.org/article/c40c32d53c5c482ca6089a19a9c08295